Abstract
Background
The COVID-19 pandemic has disrupted routine hospital services globally. This study estimated the total number of adult elective operations that would be cancelled worldwide during the 12 weeks of peak disruption due to COVID-19.
Methods
A global expert response study was conducted to elicit projections for the proportion of elective surgery that would be cancelled or postponed during the 12 weeks of peak disruption. A Bayesian β-regression model was used to estimate 12-week cancellation rates for 190 countries. Elective surgical case-mix data, stratified by specialty and indication (surgery for cancer versus benign disease), were determined. This case mix was applied to country-level surgical volumes. The 12-week cancellation rates were then applied to these figures to calculate the total number of cancelled operations.
Results
The best estimate was that 28 404 603 operations would be cancelled or postponed during the peak 12 weeks of disruption due to COVID-19 (2 367 050 operations per week). Most would be operations for benign disease (90·2 per cent, 25 638 922 of 28 404 603). The overall 12-week cancellation rate would be 72·3 per cent. Globally, 81·7 per cent of operations for benign conditions (25 638 922 of 31 378 062), 37·7 per cent of cancer operations (2 324 070 of 6 162 311) and 25·4 per cent of elective caesarean sections (441 611 of 1 735 483) would be cancelled or postponed. If countries increased their normal surgical volume by 20 per cent after the pandemic, it would take a median of 45 weeks to clear the backlog of operations resulting from COVID-19 disruption.
Conclusion
A very large number of operations will be cancelled or postponed owing to disruption caused by COVID-19. Governments should mitigate against this major burden on patients by developing recovery plans and implementing strategies to restore surgical activity safely.
Graphical Abstract
A very large number of operations will be cancelled or postponed owing to disruption caused by COVID-19. Governments should mitigate against this major burden on patients by developing recovery plans and implementing strategies to restore surgical activity safely.
Graphical Abstract.
A mountain to climb
Resumen
Antecedentes
La pandemia de COVID-19 ha interrumpido los servicios hospitalarios habituales a nivel mundial. En este estudio se calculó el número total de operaciones electivas para adultos que se cancelarían en todo el mundo durante las 12 semanas de interrupción máxima debido a COVID’19.
Métodos
Se realizó un estudio global de respuestas de expertos para obtener proyecciones sobre la proporción de cirugía electiva que se cancelaría o pospondría durante las 12 semanas del pico máximo de disrupción. Se usó un modelo bayesiano de regresión beta para estimar las tasas de cancelación durante 12 semanas en 190 países. Se determinaron los datos de la casuística de casos quirúrgicos electivos, estratificados por especialidad e indicación (cáncer versus cirugía benigna). Esta casuística de casos se aplicó a volúmenes quirúrgicos a nivel de país. Las tasas de cancelación de las 12 semanas se aplicaron a estas cifras para calcular el total de operaciones suspendidas.
Resultados
La mejor estimación fue que 28.404.603 operaciones hubieran sido canceladas o pospuestas durante las 12 semanas del pico de disrupción por COVID-19 (2.367.050 operaciones por semana). La mayoría hubieran sido operaciones por enfermedad benigna (90,2%, 25.638.922/28. 404. 603). La tasa de cancelación general en 12 semanas sería del 72,3%. A nivel mundial, el 81,7% (25.638.921/31.378.062) de la cirugía benigna, el 37,7% (2. 324.069/6.162.311) de la cirugía por cáncer y el 25,4% (441.611/1.735.483) de las cesáreas electivas hubieran sido canceladas o pospuestas. Si los países aumentan su volumen quirúrgico normal en un 20% después de la pandemia, se tardaría una mediana de 45 semanas para eliminar la acumulación de operaciones resultantes de la disrupción por COVID’19.
Conclusión
Se cancelará o pospondrá un número muy grande de operaciones debido a la disrupción causada por COVID-19. Los gobiernos deberían mitigar esta importante carga para los pacientes mediante el desarrollo de planes de recuperación e implementando estrategias para reiniciar de manera segura la actividad quirúrgica.
Introduction
The COVID-19 pandemic has led to major disruption of routine hospital services globally1. During the pandemic hospitals have reduced elective surgery in the interests of patient safety and supporting the wider response2–4. Reducing elective activities protects patients from in-hospital viral transmission and associated postoperative pulmonary complications. This preserves personal protective equipment supplies to be prioritized for the care of patients with COVID-19, and releases ward and critical care beds for surges in such patients. It also enables recovery areas in theatre suites to be repurposed as overflow ICUs. Surgeons and theatres teams may be redeployed to support other critical areas of the hospital.
Cancelling elective surgery on this scale will have a substantial impact on patients and cumulative, potentially devastating, consequences for health systems worldwide5. Delaying time-sensitive elective operations, such as cancer or transplant surgery, may lead to deteriorating health, worsening quality of life, and unnecessary deaths6–8. When hospitals resume elective activities, patients are likely to be prioritized by clinical urgency9, resulting in lengthening delays for patients with benign but potentially disabling conditions where there may be less of a perceived time impact. This will lead to a deterioration in population health, productivity and a substantial societal cost.
Worldwide cancellations in elective surgery are currently unquantified10,11. Few countries have access to real-time data, and even those that do may experience delays in this information being released owing to pressures on health systems. Estimating country-level estimates will provide the best possible baseline data to inform planning for postpandemic surgical recovery. This study aimed to estimate the total number of elective operations that would be cancelled or postponed worldwide during the 12 weeks of peak disruption of hospital services owing to COVID-19.
Methods
The study methodology is summarized in Fig. 1. First, an expert response study was undertaken to elicit surgeons' projections of the proportion of elective surgery that would be cancelled during the peak 12 weeks of disruption owing to COVID-19. These data were fed into a Bayesian β-regression model to estimate 12-week cancellation rates for elective surgery for 190 countries. Second, elective surgical case mix was determined for each Human Development Index (HDI) quintile using data from the Surgical Outcomes Studies and the expert response study. This case mix was applied to existing figures for overall country-level surgical volume to calculate expected specialty-specific surgical volumes for 190 countries. Finally, these surgical volume figures and the 12-week cancellation rate estimates were used to calculate total numbers of cancelled operations by specialty and country.
Fig. 1.
Flow chart of methodology
HDI, Human Development Index.
All 193 United Nations member countries were included in this study except Liechtenstein, North Korea and Somalia, as no surgical volume data were available for these three countries12. At present, the only region to have recovered from a large-scale SARS-CoV-2 outbreak is Hubei Province in China. Wuhan, the capital of Hubei, was in lockdown for 76 days (23 January 2020 to 8 April 2020). Therefore, the current best estimate for the duration of disruption to health systems caused by COVID-19 is around 12 weeks. This is consistent with advice that hospitals should plan to suspend non-urgent elective surgery for at least 12 weeks4.
The secondary outcomes were total number of cancelled operations stratified by World Bank region (Europe and Central Asia, East Asia and Pacific, Latin America and the Caribbean, North America, Middle East and North Africa, South Asia, Sub-Saharan Africa), World Bank country income group (high, upper–middle, lower–middle, low), and surgical specialty. Specialty-specific cancellation totals were calculated for surgical specialties accounting for 5 per cent or more of the global surgical case mix (Table S1, supporting information). This included colorectal, head and neck, gynaecological, orthopaedic, obstetric, plastics, upper gastrointestinal (including hepatobiliary surgery) and urological surgery. Colorectal, head and neck, gynaecological, plastics, upper gastrointestinal and urological surgery were further stratified into operations performed for cancer versus benign pathology. Orthopaedic surgery was not stratified in this way as cancer accounts for a very small proportion of orthopaedic operations. Specialties that individually account for under 5 per cent of surgical case mix were pooled into an ‘other surgery’ category, including breast surgery, cardiac surgery, neurosurgery, thoracic surgery and vascular surgery. Therefore, a total of 15 specialty groups were included in this study (Table 1).
Table 1.
Best estimates of cancelled operations over a 12-week period of peak disruption, by specialty group
| Normal volume* | Estimated cancellations | 12-week cancellation rate (%) | |
|---|---|---|---|
| Cancer surgery | |||
| Colorectal | 1 353 952 | 486 563 | 35·9 |
| Gynaecology | 834 839 | 328 505 | 39·3 |
| Head and neck | 959 190 | 373 603 | 38·9 |
| Plastics | 505 294 | 178 362 | 35·3 |
| Upper gastrointestinal and hepatobiliary | 1 258 862 | 498 885 | 39·6 |
| Urology | 1 250 175 | 458 151 | 36·6 |
| Benign surgery | |||
| Colorectal | 1 201 825 | 976 992 | 81·3 |
| Gynaecology | 2 665 361 | 2 175 774 | 81·6 |
| Head and neck | 4 845 604 | 3 950 551 | 81·5 |
| Orthopaedics | 7 677 515 | 6 295 041 | 82·0 |
| Plastics | 933 822 | 764 033 | 81·8 |
| Upper gastrointestinal and hepatobiliary | 2 728 786 | 2 223 194 | 81·5 |
| Urology | 3 051 523 | 2 492 604 | 81·7 |
| Other | 8 273 626 | 6 760 731 | 81·7 |
| Obstetrics | 1 735 483 | 441 611 | 25·4 |
| Total | 39 275 857 | 28 404 603 | 72·3 |
Surgical volume at full capacity (no cancellations).
Twelve-week elective surgery cancellation rates
Senior surgeons were invited to participate in an expert response study to elicit their projections for the proportion of elective surgery that would be cancelled during the peak 12 weeks of disruption owing to COVID-19. Surgeons were contacted through the global CovidSurg network and asked to enter their estimates into an online database. The questionnaire was open from 20 to 30 March 2020.
Experts were asked to provide estimates for each of the 15 specialty groups included in this study. For each specialty group, experts provided their best estimate (the most likely 12-week cancellation rate), as well as a lower bound estimate (the lowest possible cancellation rate) and an upper bound estimate (the highest possible cancellation rate). If the SARS-CoV-2 outbreak had resolved at the experts' hospital, they were asked to report actual rates of cancelled surgery due to the outbreak. If the outbreak was ongoing, experts were asked to project likely cancellation rates going forward. If the experts' hospital had not yet experienced a SARS-CoV-2 outbreak, they were asked to estimate what would happen in the event of an outbreak.
After the expert response study questionnaire had closed, responses were matched by hospital and, where there was more than one expert participating per hospital, median values for each data point were calculated, so that there was one consolidated response per hospital. Overall median values for the best estimate and upper/lower bounds were then calculated for each participating country for cancer surgery, surgery for benign disease and obstetric (elective caesarean section) operations.
A Bayesian β-regression model was developed with 2018 HDI as a predictor, in order to establish 12-week cancellation rate estimates for all 190 countries included in the study (Table S2, supporting information). HDI is a composite index of life expectancy, education and per-capita income indicators, and its relationship with surgical outcomes has been validated previously13,14.
Non-informative priors were used with sensitivity analyses done on alternative priors and different chain initiation points or chain lengths. A restricted cubic spline transformation was applied to the continuous representation of the HDI rank (rank 1 being the most developed country and rank 190 the least developed) to account for potential non-linearity. This was substituted into the final β-regression model and posterior predictions were made for each HDI rank. The model was fitted for the best estimates and lower/upper bounds for cancer surgery, surgery for benign disease and obstetric (caesarean section) operations.
Surgical case mix
The best available global data on surgical case mix are from the African Surgical Outcomes Study, European Surgical Outcomes Study and International Surgical Outcomes Study15–17. These were prospective cohort studies that captured all adults undergoing surgery in participating facilities, providing case-mix data for a total of 102 539 patients across 64 countries. No comparable global case-mix data exist for paediatric surgery, so this study was limited to adults.
Raw data from the three Surgical Outcomes Studies were pooled to estimate case mix by HDI quintile (Table S2, supporting information). First, the case mix was determined according to urgency: elective versus emergency. Next, within elective surgery the case mix was stratified by specialty. To determine cancer versus benign surgical case mix, the expert response study participants were asked to estimate the proportions of colorectal, head and neck, gynaecological, plastics, upper gastrointestinal and urological operations performed in their hospitals for cancer. Hospital-level results were then pooled by HDI quintile to calculate median proportions of cancer surgery for each specialty.
Surgical volume
A previous report12 identified total country surgical volume for 72 countries (presented as point estimates) and modelled estimates for a further 120 countries (presented as confidence intervals). As only overall total (paediatric surgery) country volumes were available, population age-structure data from the World Bank were used to estimate total adult surgical volume for each country. Adults were defined as people age 15 years and above, consistent with age categories used for population data by the World Bank.
Country-level surgical volumes for each of the 15 specialty groups included in this study were calculated based on the country-specific adult surgical volume and case mix for the appropriate HDI quintile. For the best estimate of total cancellations, the point estimate (if provided) or the midpoint of the confidence interval for country-level surgical volume was used to calculate specialty-specific country-level surgical volume.
Totals for cancelled surgery
Country-level surgical volume data and modelled 12-week cancellation rates were used to calculate specialty group-specific totals for adult elective operations cancelled during the peak 12 weeks of disruption. The best estimate for the number of cancelled operations was based on the modelled best estimates for 12-week cancellation rates.
Surgical recovery
The time it would take countries to clear the backlog of operations resulting from 12 weeks of disruption owing to COVID-19 was estimated. It was assumed that cancelled obstetric (caesarean section) operations would not need to be rescheduled after the pandemic. Therefore, the time taken to clear country-level backlogs of operations for benign disease and cancer was based on country-level baseline volumes of surgery for these conditions. The number of whole or part weeks needed to clear these backlogs was calculated based on 10, 20 and 30 per cent increases in baseline surgical volume.
Sensitivity analyses
An estimate for the minimum number of operations likely to be cancelled was based on the lowest likely baseline surgical volume (the lower bounds for total surgical volume estimates where provided) and the modelled lower bounds for 12-week cancellation rates. An estimate for the maximum number of operations likely to be cancelled was based on the highest likely baseline surgical volume (the upper bounds for total surgical volume estimates where provided) and modelled upper bounds for 12-week cancellation rates.
Analyses were done using R version 3.6.3 and rstan (the R interface to the statistical inference language Stan) and the packages brms and finalfit (R Foundation for Statistical Computing, Vienna, Austria).
Results
Twelve-week cancellation rates
From a total of 538 submissions to the expert response study (Fig. S1, supporting information), data were available for 359 hospitals in 71 countries (Table S3, supporting information). Proportions of surgery projected to be cancelled were consistently estimated to be higher for benign conditions than for obstetrics (elective caesarean sections). Proportions of cancer surgery projected to be cancelled were lower in the most developed countries compared with the least developed ones (Fig. S2, supporting information).
Based on the Bayesian β-regression model, best estimates for country-level 12-week cancellation rates for cancer surgery ranged from 23·4 to 77·1 per cent, whereas they ranged from 71·2 to 87·4 per cent for surgery for benign conditions, and from 17·4 to 37·8 per cent for obstetrics (Fig. 2; Table S4, supporting information).
Fig. 2.
Country-level 12-week cancellation rates, by type of surgery
a Surgery for benign disease, b cancer surgery and c obstetric surgery.
Surgical volume
The best estimate for cancellations was based on a global annual adult elective surgical volume of 170 195 382 operations (Fig. S3, supporting information). Details of surgical case mix are provided in Tables S5–S8 and Figs S4–S7 (supporting information).
Total cancellations
The best estimate was that 28 404 603 operations would be cancelled or postponed globally during the peak 12 weeks of the COVID-19 pandemic. Worldwide 2 367 050 operations would be cancelled per week, with 11 countries cancelling more than 50 000 operations per week (Table 2).
Table 2.
Weekly totals for best estimates of cancelled operations, by country
| Weekly total operations cancelled | Data by country |
|---|---|
| < 1000 | Albania (567), Andorra (41), Antigua and Barbuda (54), Bahamas, The (280), Bahrain (514), Barbados (193), Belize (57), Benin (157), Bhutan (103), Botswana (792), Brunei Darussalam (249), Burkina Faso (237), Burundi (110), Cabo Verde (49), Cambodia (601), Cameroon (744), Central African Republic (32), Chad (29), Comoros (24), Congo, Democratic Republic (642), Congo, Republic (155), Cyprus (347), Djibouti (45), Dominica (27), Equatorial Guinea (211), Eritrea (78), Eswatini (195), Fiji (175), Gabon (242), The Gambia (30), Grenada (43), Guinea (141), Guinea-Bissau (35), Guyana (93), Haiti (305), Honduras (974), Iceland (297), Jamaica (964), Kiribati (7), Kyrgyz Republic (877), Lao People's Democratic Republic (192), Lesotho (115), Liberia (168), Luxembourg (564), Madagascar (231), Malawi (283), Maldives (237), Mali (347), Malta (554), Marshall Islands (16), Mauritania (116), Mauritius (260), Micronesia, Federated States (22), Monaco (32), Montenegro (268), Mozambique (370), Namibia (497), Nauru (7), Nepal (277), Niger (206), North Macedonia (711), Palau (15), Papua New Guinea (338), Rwanda (349), Samoa (13), San Marino (16), Sao Tome and Principe (18), Senegal (267), Seychelles (232), Sierra Leone (110), Solomon Islands (55), South Sudan (135), St Kitts and Nevis (33), St Lucia (76), St Vincent and the Grenadines (36), Suriname (243), Tajikistan (680), Tanzania (808), Timor-Leste (48), Togo (137), Tonga (26), Trinidad and Tobago (892), Tuvalu (4), Uganda (890), Vanuatu (15), Yemen, Republic (188), Zambia (418), Zimbabwe (810) |
| 1000–9999 | Afghanistan (1048), Angola (1612), Armenia (1124), Azerbaijan (1556), Bangladesh (2671), Bolivia (1094), Bosnia and Herzegovina (1625), Bulgaria (5109), Costa Rica (1734), Cote d'Ivoire (1153), Croatia (2086), Cuba (5578), Czech Republic (6531), Denmark (5622), Dominican Republic (3934), Ecuador (2012), Egypt, Arab Republic (9055), El Salvador (1200), Estonia (1255), Ethiopia (1124), Finland (6053), Georgia (1868), Ghana (1212), Greece (7492), Guatemala (1119), Iraq (3420), Ireland (1376), Israel (3766), Jordan (1839), Kazakhstan (7339), Kenya (1780), Kuwait (2593), Latvia (3565), Lebanon (2717), Libya (2060), Lithuania (2945), Moldova (1564), Mongolia (1283), Morocco (1302), Myanmar (1674), New Zealand (2721), Nicaragua (1351), Nigeria (9543), Norway (5370), Oman (1005), Pakistan (3746), Panama (2409), Paraguay (2211), Peru (7478), Portugal (8885), Qatar (1933), Romania (9135), Saudi Arabia (9410), Serbia (3476), Singapore (4418), Slovak Republic (4644), Slovenia (1524), Sri Lanka (3509), Sudan (3485), Switzerland (9162), Syrian Arab Republic (1697), Tunisia (3501), Turkmenistan (1208), United Arab Emirates (6402), Uruguay (2292), Uzbekistan (6988), Vietnam (7110) |
| 10 000–49 999 | Algeria (12 870), Argentina (27 088), Austria (11 967), Belarus (17 569), Belgium (22 660), Canada (32 881), Chile (11 696), Hungary (13 959), India (48 728), Indonesia (31 050), Iran, Islamic Republic (32 099), Korea, Republic (17 267), Malaysia (12 891), Mexico (15 315), Netherlands (15 847), Philippines (13 593), Poland (22 656), South Africa (12 795), Spain (45 449), Sweden (14 588), Thailand (18 332), Ukraine (21 943), UK (43 307), Venezuela, RB (17 234) |
| 50 000–99 999 | Australia (67 149), France (58 708), Germany (75 730), Italy (50 552), Russian Federation (93 688), Turkey (82 002) |
| ≥ 100 000 | Brazil (247 444), China (326 177), Colombia (113 082), Japan (113 324), USA (343 670) |
Values in parentheses are weekly total of cancelled operations for each country.
Most of the cancelled or postponed operations were estimated to be for benign disease (90·2 per cent, 25 638 922 of 28 404 603), followed by cancer (8·2 per cent, 2 324 070 of 28 404 603) and obstetrics (1·6 per cent, 441 611 of 28 404 603) (Table 1). The best estimate was that the global 12-week cancellation rates would be 72·3 per cent (28 404 603 of 39 275 857) overall, 81·7 per cent (25 638 922 of 31 378 062) for benign disease surgery, 37·7 per cent (2 324 070 of 6 162 311) for cancer surgery and 25·4 per cent (441 611 of 1 735 483) for obstetrics (Table 3).
Table 3.
Best estimates for cancelled operations over a 12-week period of peak disruption, by country income and region
| Surgery for benign disease | Cancer surgery | Obstetric surgery | Total | |
|---|---|---|---|---|
| High income | 11 803 371 (83·6) | 937 740 (30·3) | 89 073 (20·1) | 12 830 185 (72·7) |
| East Asia and Pacific | 2 276 604 (84·6) | 167 830 (28·7) | 17 271 (21·7) | 2 461 704 (73·4) |
| Europe and Central Asia | 4 895 041 (83·7) | 384 630 (30) | 39 106 (20·9) | 5 318 777 (72·7) |
| Latin America and the Caribbean | 188 143 (81·7) | 22 331 (38·7) | 3718 (23·4) | 214 192 (70·5) |
| Middle East and North Africa | 284 896 (83) | 26 142 (33·9) | 3076 (23·3) | 314 114 (72·4) |
| North America | 4 156 253 (83·1) | 336 510 (31) | 25 855 (17·5) | 4 518 619 (72·4) |
| Sub-Saharan Africa | 2434 (81) | 297 (39·5) | 47 (22·7) | 2778 (70) |
| Upper–middle income | 11 824 165 (80·4) | 1 171 864 (43·4) | 254 374 (26·4) | 13 250 403 (72·1) |
| East Asia and Pacific | 3 836 777 (79·6) | 370 906 (47·8) | 83 989 (27·9) | 4 291 672 (72·8) |
| Europe and Central Asia | 2 402 694 (81·5) | 277 144 (37·8) | 47 108 (23·2) | 2 726 946 (70·2) |
| Latin America and the Caribbean | 4 811 770 (80·6) | 436 109 (43·6) | 101 324 (26·9) | 5 349 203 (72·8) |
| Middle East and North Africa | 579 884 (80·4) | 67 302 (44·5) | 12 885 (24·9) | 660 070 (71·4) |
| South Asia | 38 931 (82·1) | 5227 (45·1) | 798 (24·6) | 44 957 (72·2) |
| Sub-Saharan Africa | 154 110 (77·7) | 15 176 (55·6) | 8270 (28·4) | 177 555 (69·7) |
| Lower–middle income | 1 906 718 (78·8) | 200 315 (56·8) | 86 875 (29·5) | 2 193 909 (71·6) |
| East Asia and Pacific | 591 840 (79·5) | 63 188 (55·3) | 16 827 (28·6) | 671 855 (73·2) |
| Europe and Central Asia | 338 114 (80·8) | 31 754 (48·3) | 6595 (24·4) | 376 463 (73·7) |
| Latin America and the Caribbean | 47 844 (76·7) | 4839 (57·8) | 2749 (28·8) | 55 433 (69·1) |
| Middle East and North Africa | 144 904 (77·7) | 14 644 (56) | 7282 (29·9) | 166 830 (70·4) |
| South Asia | 571 190 (79) | 58 633 (60·1) | 33 156 (28·9) | 662 980 (70·9) |
| Sub-Saharan Africa | 212 826 (75·1) | 27 257 (67·8) | 20 266 (33·7) | 260 349 (67·8) |
| Low income | 104 668 (75·1) | 14 150 (70·2) | 11 289 (34·6) | 130 106 (67·7) |
| Europe and Central Asia | 7055 (78·6) | 689 (57·2) | 418 (30·4) | 8162 (70·7) |
| Latin America and the Caribbean | 2900 (72·1) | 405 (69·1) | 355 (36·5) | 3660 (65·6) |
| Middle East and North Africa | 18 259 (77·3) | 2415 (70·2) | 1941 (34) | 22 615 (69) |
| South Asia | 12 872 (75·2) | 1710 (69·8) | 1311 (34·4) | 15 892 (68) |
| Sub-Saharan Africa | 63 582 (74·2) | 8931 (71·6) | 7264 (35·1) | 79 777 (67·1) |
Values in parentheses are cancellation rate during the 12 weeks of peak disruption owing to COVID-19. There are some small inconsistencies between totals due to differences in how figures have been rounded.
Overall, 12-week cancellation rates by World Bank region would range from 68·3 to 73·0 per cent. The most cancellations were projected to take place in Europe and Central Asia (8 430 348 procedures) and the least in Sub-Saharan Africa (520 459) (Fig. 3 and Table 4), reflecting the low baseline surgical volume there. Country-level totals stratified by specialty are presented in Table S9 (supporting information).
Fig. 3.
Best estimates for number of elective operations cancelled during the peak 12 weeks of disruption due to COVID-19, by geographical region
Elective operations performed are those that are projected not to be cancelled during the 12 weeks of peak disruption owing to COVID-19.
Table 4.
Projected total cancelled operations over a 12-week period of peak disruption, by specialty and region
| East Asia and Pacific | Europe and Central Asia | Latin America and the Caribbean | Middle East and North Africa | North America | South Asia | Sub-Saharan Africa | Total | |
|---|---|---|---|---|---|---|---|---|
| Colorectal | 370 947 (271 699–525 058) |
429 080 (293 754–648 207) |
289 478 (225 678–387 241) |
66 360 (40 354–107 578) |
216 938 (82 055–557 016) |
51 498 (29 220–84 688) |
39 253 (23 429–63 129) |
1 463 554 (966 189–2 372 917) |
| Gynaecology | 615 432 (465 320–845 332) |
726 822 (527 138–1 048 555) |
438 252 (351 688–568 490) |
109 110 (70 281–168 401) |
413 412 (174 874–996 313) |
108 772 (61 384–179 841) |
92 479 (54 885–149 462) |
2 504 279 (1 705 570–3 956 394) |
| Head and neck | 1 273 813 (992 658–1 697 114) |
1 145 636 (846 679–1 619 047) |
1 040 920 (852 507–1 320 423) |
161 277 (102 965–252 346) |
599 701 (257 022–1 433 471) |
56 571 (33 227–90 353) |
46 237 (27 997–73 646) |
4 324 155 (3 113 055–6 486 400) |
| Obstetrics | 118 086 (73 147–170 326) |
93 227 (61 570–152 867) |
108 147 (68 085–153 903) |
25 184 (13 781–47 053) |
25 855 (10 451–97 857) |
35 266 (21 493–64 886) |
35 846 (19 567–63 694) |
441 611 (268 094–750 586) |
| Orthopaedics | 1 552 527 (1 198 532–2 099 308) |
2 026 572 (1 505 280–2 862 626) |
1 040 757 (854 680–1 319 648) |
244 121 (162 132–369 337) |
1 196 372 (525 886–2 813 418) |
144 637 (84 657–230 216) |
90 054 (55 692–141 092) |
6 295 040 (4 386 859–9 835 645) |
| Plastics | 177 608 (127 932–257 002) |
344 224 (247 596–499 065) |
113 308 (85 578–157 432) |
48 738 (30 970–76 291) |
173 955 (71 275–427 356) |
48 222 (27 550–78 677) |
36 341 (21 834–58 177) |
942 396 (612 735–1 554 000) |
| Upper gastrointestinal and hepatobiliary | 782 347 (598 486–1 054 538) |
747 601 (548 811–1 057 813) |
668 231 (531 744–873 887) |
113 529 (70 173–182 131) |
335 765 (140 659–814 011) |
46 355 (27 099–74 315) |
28 253 (17 250–44 753) |
2 722 081 (1 934 222–4 101 448) |
| Urology | 758 344 (571 645–1 044 176) |
889 675 (642 223–1 288 273) |
561 714 (448 141–733 207) |
120 947 (77 150–189 014) |
484 983 (201 581–1 181 362) |
73 061 (42 221–117 986) |
62 031 (37 381–99 027) |
2 950 755 (2 020 342–4 653 045) |
| Other surgery | 1 776 126 (1 390 121–2 366 924) |
2 027 511 (1 528 468–2 816 774) |
1 361 682 (1 122 998–1 717 845) |
274 363 (179 792–420 180) |
1 071 638 (471 057–2 520 091) |
159 448 (93 597–253 148) |
89 964 (56 058–140 272) |
6 760 732 (4 842 091–10 235 234) |
| Total | 7 425 231 (5 689 539–10 059 779) |
8 430 348 (6 201 518–11 993 227) |
5 622 488 (4 541 098–7 232 076) |
1 163 629 (747 598–1 812 332) |
4 518 618 (1 934 859–10 840 895) |
723 829 (420 448–1 174 112) |
520 459 (314 092–833 252) |
28 404 603 (19 849 153–43 945 672) |
Values are best estimate (range). There are some small inconsistencies between totals due to differences in how figures have been rounded.
Surgical recovery
Based on a 20 per cent increase in baseline surgical volume, it was estimated that it would take countries a median of 45 (range 43–48) weeks to clear the backlog of operations resulting from 12 weeks of disruption due to COVID-19 (Table S10, supporting information). If baseline surgical volume were increased by 10 per cent, it would take countries a median of 90 (86–95) weeks to clear the backlog, whereas with a 30 per cent increase in baseline surgical volume this would take a median of 30 (29–32) weeks.
Sensitivity analyses
The minimum estimate was that 19 849 153 operations would be cancelled worldwide during the 12 weeks of peak disruption due to COVID-19 (1 654 096 per week), representing a 61·1 per cent 12-week cancellation rate (19 849 153 of 32 488 250). The maximum estimate was that 43 945 672 operations would be cancelled during the peak 12 weeks (3 662 139 per week), representing a 12-week cancellation rate of 86·2 per cent (43 945 672 of 50 960 625).
Discussion
This study has demonstrated the major burden of cancelled elective surgery due to the COVID-19 pandemic. Although a similar proportion of surgery will be cancelled across different country income settings and geographical regions, the greatest number of cancellations will be in upper–middle-income countries. Cancer surgery will be prioritized in most settings, with most cancellations relating to surgery for benign conditions, most frequently orthopaedics.
The risks of exposing patients to perioperative SARS-CoV-2 infection by performing surgery during outbreaks are high, but must be weighed against the risks of protracted treatment delays. Given that many health systems already lack sufficient capacity to meet the need for surgery18, the impact of cancellations will be cumulative, adding to existing waiting lists. Governments will need to fund substantial increases in baseline surgical volume to clear backlogs, but this is likely to be costly. For example, based on an average cost of £4000 per operation, it would cost over £2 billion to clear the UK's backlog.
There is a risk that delayed treatment of benign conditions as a result of pandemic-related cancellations will lead to deterioration in individual patients' conditions, increasing disability and reducing their ability to work. This will lead to lead to substantial societal costs, particularly in low–middle income countries (LMICs) where catastrophic expenditure relating to surgical disease can lead to impoverishment19,20.
This study has several limitations. Although estimates were based on the best available global surgical data, several assumptions were required. As the COVID-19 pandemic is ongoing, it was necessary for the expert response study participants to project forward their estimates for 12-week cancellation rates. Participants in countries where the pandemic was in its earliest stages, such as in Sub-Saharan Africa, may have had to base their estimates on experience in previous emergencies, rather than the specific circumstances of COVID-19. The uncertainty around these estimates was captured by recording both lower and upper bounds, as well as best estimates for 12-week cancellation rates. Surgical case mix was based principally on snapshot cohort studies that collected data across 64 countries15–17. Given the barriers to participation in research, particularly in LMICs21, it is unknown how representative these data are of the global case mix. Most countries do not publish surgical volume data, so this study relied on previous estimates of country-level surgical volume.
The eventual geographical extent and intensity of the pandemic is currently unknown, but it is likely that most countries will be affected22–24. The country-level figures can be used to produce estimates of cancellations per week, allowing policymakers to adjust estimates according to the predicted duration of local outbreaks. Prediction of the impact of COVID-19 on elective surgery in local communities can inform local planning and resource prioritization.
Postpandemic surgical recovery planning should anticipate the possibility of repeat waves of SARS-CoV-2 infection25, leading to additional periods of cancellation of elective surgery. Therefore, strategies to safely maintain surgical volume during and immediately after SARS-CoV-2 outbreaks should be explored. For example, time-sensitive surgery, such as cancer resection, can be performed in designated non-COVID-19 units that do not treat patients with COVID-19. Although the optimal organization of such surgical units is unknown, it is likely that they should carefully select low-risk patients who are unlikely to require intensive care and can be operated safely in satellite units. Both patients and staff will require rigorous screening to reduce the risks of cross-infection. Surgical recovery plans should also consider that an immediate return to high-volume surgery may not be possible. For example, adaptations to operating theatres, such as installation of negative pressure flow systems, may need to be expedited to reduce the delay to resumption of normal activity.
Future research should be prioritized to identify strategies to mitigate the risk of operating in COVID-19 environments, so that cancellations are minimized. For example, although ongoing trials are testing treatments for COVID-1926–28, large randomized trials are also needed to test therapies to prevent postoperative COVID-19 pulmonary complications.
Supplementary Material
Appendix S1 Authorship (all co-authors PubMed citable)
Fig. S1 Flow chart of analysis of expert response study
Fig. S2 12-week cancellation rates based on data submitted to expert response study
Fig. S3 Calculation of estimated cancellations from total surgical volume
Fig. S4 Elective versus emergency case-mix, by HDI quintile, based on Surgical Outcomes Studies data
Fig. S5 Elective surgery case-mix, by HDI quintile, based on Surgical Outcomes Studies data
Fig. S6 Case-mix for obstetrics versus gynaecology case-mix, by HDI quintile, based on data submitted to expert response study
Fig. S7 Case-mix for cancer versus benign surgery by specialty, by HDI quintile, based on data submitted to expert response study
Table S1 Global surgical case-mix
Table S2 Country characteristics
Table S3 Countries represented in hospital-level survey
Table S4 Country-level 12-week cancellation rates
Table S5 Surgical case-mix by Human Development Index Quintile
Table S6 Annual country-level elective surgical volumes (best estimates)
Table S7 Annual country-level elective surgical volumes (mimunum estimates)
Table S8 Annual country-level elective surgical volumes (maximum estimates)
Table S9 Country-level totals for cancelled operations over a 12-week period
Table S10 Country-level totals for cancelled operations over a 12-week period and estimates
Acknowledgements
This report was funded by a National Institute for Health Research (NIHR) Global Health Research Unit Grant (NIHR 16.136.79), using UK aid from the UK Government to support global health research; the Association of Coloproctology of Great Britain and Ireland; Bowel & Cancer Research; Bowel Disease Research Foundation; Association of Upper Gastrointestinal Surgeons; British Association of Surgical Oncology; British Gynaecological Cancer Society; European Society of Coloproctology; NIHR Academy; Sarcoma UK; Vascular Society for Great Britain and Ireland; and Yorkshire Cancer Research. The funders had no role in the study design, data collection, analysis and interpretation, or writing of this report. The views expressed are those of the authors and not necessarily those of the National Health Service, the NIHR or the UK Department of Health and Social Care.
Disclosure: The authors declare no conflict of interest.
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França, António Pais Lacerda, Lucindo Ormonde, Rosário Rosa, Inês Pereira, Paula Vitor, Henrique Completo Bento, Maria Raquel Lopes Marques Carvalho, Manuela Faria, Eduardo Almeida, Rui Mealha, Rachel Vicente, Raquel Monte, Fernando Rua, Nelson Barros, Francisco Esteves, Célia Maria Gouveia Pinheiro, Vila Real, Vítor Miguel Oliveira, Maria Fátima Oliveira, Isabel Martins, José Pedro Saraiva, José Pedro Assunção, Anabela Bártolo, Anabela Carvalho, Carlos Correia, Salomé Martins, Ruth Milheiro, Alejandro Diaz, Maria Imelda Gonçalves, Rosa Ribeiro, Joana Estilita, Carlos Glória, José Almeida, Filipa Barros, Armindo Ramos, Margarida Camara, Edward Richard Maul, Julio Nobrega, Anuscka Langner, Dionísio Faria Maia, Ofélia Afonso, Filomena Faria, Sofia Serra, Maria Manuela Botelho, Pedro Ferreira, Luís Mourão, Ana Vintém Oliveira, Margarida Resende, Miguel Aleman, Jorge Fonseca, Marta Isidoro, Helena Meneses, António Pêgas, José Pereira, Luis Pereira, Bárbara Ramos, Francisco Matos, Ricardo 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Ovidiu, Marius Papurica, Cosmin Plavat, Claudia Popa, Mihaela Ramneantu, Dorel Sandesc, Zoran Sandici, Mihaela Sarandan, Ioana Belciu, Eugen Tincu, Mariana Aignatoaie, Mariana Huzuneanu, Simona Cocu, Natalia Hagau, Roxana Ciubotaru, Sanda-Maria Copotoiu, Ruxandra Copotoiu, Ghitescu Ioana, Judit Kovacs, Azamfirei Leonard, Ianos Szederjesi, Vanvu Genoveva, Simona Mosnegutu, Dragan Djordjevic, Biljana Djordjevic, Krasimirka Grujic, Dusko Jovanovic, Jovana Obradovic, Snjezana Zeba, Jasna Jevdjic, Milos Miletic, Filip Zunic, Aleksandra Bulasevic, Radoslava Brko, Narcisa Gazibegovic, Mirjana Kendrisic, Radisa Vojinovic, Judita Capková, Jozef Firment, Monika Grochova, Stefan Trenkler, Martin Griger, Roman Zahorec, Erika Bakosova, Martin Kvasnica, Beata Saniova, Miroslav Sulaj, Andrea Zacharovska, Alexandra Simkova, Andrea Číková, Andrea Gebhardtova, Slávka Hanuljaková, Juraj Koutun, Andrea Martonová, Veronika Žilinčárová, Katarína Galkova, Stefan Krbila, Viliam Sobona, Marieta Ocenasova, Vesna Novak-Jankovic, Adela Stecher, Feri Stivan, Andriy Grynyuk, Marija Damjanovska, Ivan Kostadinov, Mile Knezevic, Marko Malivojevic, Zvonko Borovsak, Mirt Kamenik, Dušan Mekiš, Silva Ostojič Kapš, Dragoslav Aleksic, Božena Gerjevič, Katja Kalan, Tomaz Ursic, Anna Artigas, Andres Garcia, Alberto Lisi, Isabel Perez, Gisela Perez, Nuria Poch, Sergi Vaquer, Goiatz Balciscueta, Helena Barrasa, Sara Cabanes, Javier Maynar, Yolanda Poveda, Amaia Quintano Rodero, Ana Vallejo, Patrícia Duque, Beatriz Garcia-Bunger, Maria Adoracion Elvira, Ana María Lajara, María Palencia, Rafael Ramos, Ana Saez Fernandez, Juan Pedro Tirapu León, Jaione Iza López, Francisco Javier Yoldi Murillo, Eva Turumbay Ramirez, Patricia Unzué Rico, Marta Patricia, Martín Vizcaíno, Maria José Bernat Álvarez, Kenneth Planas Real, Arantxa Mas Serra, Norma Aracil, Begoña Menendez Bodega, Raquel Fernández García, Marivi Álvarez García, Borja Quintana Gordon, Alicia Gutiérrez Jodrá, Angela De Santos López, Juan José Llavador Ros, Rocío Ayala Soto, Isabel Sepúlveda, Esperanza Pascual Díez, Luisa Fernández Fernández, Carlos Soria Gulina, Laura Pérez Arviza, Lorena Mouriz Fernandez, Antía Río Gómez, Concepción Alonso Martínez, Ana Belén Rodríguez Rodríguez, Carmen Lopez Soto, Cesar Aldecoa, Clara Garcia, Mario Lorenzo, Elena Pinilla, Jesus Rico, Irene Ruperez, Eduardo Alonso, Fernando Leira, David Pestaña Emilio Maseda, Concepcion Royo, Jose Villagran, Giralt Murillo Candi, Garcia Eduardo Esteva, Raquel Mansilla Folgado, Nadal Joan Fornaguera, Pijoan Calonge Montse, Anna Sape Prat, Dolores Sintes, Donaldo Arteta Arteta, Horacio García Delgado, Juan Fajardo López-Cuervo, Mikel Celaya López, Alejandro Ramírez, Francisco José Saldaña, Pilar Aliste, Ana Hermira Anchuelo, Ascensión García Campos, Mercedes Catalán, Mónica García Gómez, Olga Gonzalez Gonzalaez, Eloísa López López, Isabel Real Navacerrada, Sara Arlanzón Quevedo, Matilde Gonzalez Serrano, Francisco Perez-Cerdá Silvestre, Francisco Martinez Torrente, Blanca Arocas, Ernesto Pastor Martinez, Marina Soro, Fernando Maroto, Ruth Robledo Algarra, Inés Silla Aleixandre, Gemma Rodriguez Argente, Ana Broseta Lleó, Antonio Vela Rubio, José Luis Vicente Sánchez, Irene Enríquez Valcárcel, Clara Balust, Jaume Balust, Xavier Borrat, Maria Jose Carretero, Isabel Gracia, Purificacion Matute, Jordi Mercadal, Roger Pujol, Beatriz Tena, Marta Ubre, Dolores Dorda Albalad, Concepción Muñoz Alcaide, Jesus Caballero, Angels Camps Cervantes, Miriam Nadal Clanchet, Nuria Montferrer Estruch, Mercè Ballvé Ferrer, Albert Lacasta Fornells, Eduard Terrer Galera, Irene Garcia Martinez, Susana Manrique Muñoz, Andres Pelavski, Pilar Tormos Perez, Miguel Angel Gonzalez Posada, Ivette Chocron Prat, Jordi Rello, Llum García Serrano, José Manuel Naya Sieiro, Lorena Silva, Maria Jose Colomina Sole, Alfons Biarnes Suñé, Isabel Rochera Villach, José Ignacio Gómez Herreras, Rodrigo Poves, Beatriz Martinez Rafael, Icier Martinez Almeida, Angel Fernandez Collates, Maria Jose Bartolomé, Bonifacio Cimadevilla, Antonio Manuel González González, Jose Manuel Rabanal Llevot, Juan Carlos Diaz Terán Mira, Begoña González Molina, Sara Pardo, Carlos López Sánchez, Monica Williams, Estibaliz Zaldibar, Lourdes Muñoz Corsini, José Ramón Rodríguez Fraile, Maria Lastra, Monir Kabiri Sacramento, Francisco Javier López Saña, Josep Trenado Ålvarez, Maria Luisa Cantón Bulnes, Violeta Gándara Carrasco, Mª Rocío Míguez Crespo, Diana Narváez Cubillos, Enrique Laza Laza, Mª Pino Heredia Pérez, Ángel Arenzana Seisdedos, Bartolomé Fernández Torres, Marian Santos Ampuero, Marta Chicot Llano, Esperanza Mata, Manuel Munoz, Mar Orts, Antonio Planas, Fernando Ramasco, Carlos Roman, Marina Varela Durán, Sabela Río Fernandez, Yolanda Sanduende Otero, Susana Lopez Pineiro, Cristina Barreiro Pardal, Jesús Fernández Alcantud, Mercedes Ayuso Antolinos, Francisco Barrios, Ana Collantes Casanova, Manuel Ruiz Castro, Beatriz Infantes Crespo, Uzuri Lancha Felipe, Marta Liceras Fuster, Máximo Sanz García, Begoña Herrero Garrote, Ricardo Moreno Gonzalez, Maria José Montes Granero, Carlos Lloreda Guía, Raquel Chaves López, Santiago Frutos López, Jose Javier Marco Martinez, Angel Garcia Mostaza, Antonio Jiménez Moreno, Irene Riquelme Osado, Mónica Rustarazo Pérez, María Aliaño Piña, Carlos Aranda Romero, Elena Rodríguez Rodríguez, Javier Hernández Salvan, Mar Galán Sampedro, Patricia Alfaro Torre, Jonatan Pérez Toro, Crsitina Lasa Unzúe, Maria José Vargas, David Garcia Bernal, Mercedes Echevarria, Alejandro Ubeda Iglesias, Ana Loza, Araceli Rodriguez Morillo, Pedro Diaz Serrano, Fernando Caba Barrientos Sevilla, Elena Cacho, Ricardo Calderón, Mercedes Dufur, Carolina Marginet, Pablo Monedero, Maria José Yepes, Luzdivina Rellán Alvarez, Francisca Fernández Carballal, Alberto Pensado Castiñeiras, Paula Dieguez García, Lorena Ramos López, Pablo Rama Maceiras, María Socorro Martínez Puente, Maria Teresa Rey Rilo, Ana Esther Trujillo Alonso, Sonia Rodríguez Fernández, Rafael Omaña García, Aníbal Pérez García, Rafael Bello Puentes, Domingo Nunez Aguado, Carlos Lopez Carballo, Ricardo Fernandez Fernandez, Amadeo Toledo Presedo, Ricardo Bermejo Diaz Rabago, Ana Rodriguez Velasco, Yolanda Jiménez Capel, Ana Fernández Cortés, Esther Martínez García, Laura Martinez Gimeno, Jordi Klamburg, Rosa Castillo Omedas, Miriam González Núñez, Clara Llubià Maristany, Enrique Moret Ruiz, Xavier Artigas, Sebastian Castrillón, Nieves Espinosa, Ana Mª Gomez-Caro, Susana Illa, Inmaculada India, Beatriz Martín-Huerta, Victoria Moral, Marisa Moreno, Cristina Iglesias Fernández, Violeta Fernández García, Pedro Picatto Hernández, Angel Alberto Honrubia Checa, David Salvatierra Diaz, Manuel Linero Noguera, Ignacio Pujol Varela, Miguel A González Gallego, Oscar Martínez García, José Javier Ariño Irujo, Carlos González Perrino, Julio Rey Picazo, Francisco López Timoneda, María Manzanero Arroyo, Isabel Albalá Blanco, Marcos Martínez Borja, Sara Martín Burcio, Nilda Martinez Castro, 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Carlos Seron-Arbeloa, Miguel Angel Mendiola Asensio, Rosa Gastaldo Simeón, Luis Enrique Muñoz Alameda, Guillermo Oeding Angulo, Monserrat Aranzubia, Jose Juan Arcas, Julian Arevalo, Belén Quesada Belvert, César Pérez Calvo, Marta Cremades, Pascual Crespo, Ana Cuarental, Mercedes Del Olmo, Pablo Turrión Fernández, José Luis Franqueza García Isabel Garcia Vega, Elena Herrera, Miguel Angel Alcala Llorente, Cecilia Martin Rabes, Ana Gamo Maeyer, Manuel Pérez Marquez, Diego López Mendoza, José María Milicua Muñoz, Natividad Arias Martínez, Arnoldo Santos Oviedo, Pau Benavent Garrigues, José Alonso Íñigo, Sergi Tormo Ferrandiz, Silvia Sanchez-Morcillo, Matilde Lafuente Sánchez, Asunción Marqués Parra, Sonia Gomar Vidal, Raquel Montoiro Allué, Begoña Zalba Etayo, Raquel Bustamante Rodriguez, Luis Martin Villen, Cristina Molla Jimenez, Ricardo Salas Zayas, Cristina Dolera Moreno, Fernando SanJose Pacheco, Jose Luis Anton Pascual, Fernando Tejera Gude, Eva Manteiga Riestra, Francisco Cota Delgado, Maria Victoria Torre Prados, Javier Barrios, Manuel Cervera-Montes, Mercedes García-Sanz, Vicente García, Guillermo Sanmiguel, Julian López Álvaro, Beatriz Bornay Barrachima, Francisco Jose Romero Bermejo, Alberto Garcia Fernandez Pilar Martinez Garcia, Carolina Navarro Ramírez, Jorge Gómez Ramos, Luis Angel Samaniego, Alberto Belenguer-Muncharaz, Amparo Ferrándiz-Selles, Maria-Lidon Mateu-Campos, David Domínguez, Elena Espinosa, Teresa León, Nazario Ojeda Betancor, Ana Manzano Canalechevarria, Beatriz Fores Novales, Jose Manuel Garcia Peña, Tomas Rodriguez Delgado, Beatriz Santamaria Roquerio, Juan Jose Gomez Sainz, Teresa Tebar Soto, Peter Dahm, Helena Odenstedt Hergès, Christoffer Lundborg, Heléne Seeman-Lodding, Sören Söndergaard, Christian Rylander, Ferenc Sari, Anna Oscarsson Tibblin, Anne Adolfsson, Bengt Klarin, Susann Schrey, Michelle S Chew, Edyta Merisson, Jörgen Rydén, Mona Britt Divander, Annika Hedin, Daniel Hedlund, Mikael Axelsson Lindkvist, Monir Jawad, Lona 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Fellinger, Simone Haselberger, Caroline Holaubek, Paul Lichtenegger, Florian Scherz, Werner Schmid, Franz Hoffer, Veronika Cakova, Andreas Eichwalder, Norbert Fischbach, Reinhold Klug, Elisabeth Schneider, Martin Vesely, Reinhart Wickenhauser, Karl Gernot Grubmueller, Marion Leitgeb, Friedrich Lang, Nancy Toro, Marlene Bauer, Friedrich Laengle, Thomas Mayrhofer, Christian Buerkle, Karin Forstner, Reinhard Germann, Harald Rinoesl, Elke Schindler, Ernst Trampitsch, Gerhard Fritsch, Christian Szabo, Jawad Bidgoli, Hans Verdoodt, Patrice Forget, David Kahn, Fernande Lois, Mona Momeni, Caroline Prégardien, Audrey Pospiech, Arnaud Steyaert, Laurent Veevaete, Dirk De Kegel, Karen De Jongh, Luc Foubert, Carine Smitz, Marcel Vercauteren, Jan Poelaert, Jacques Abeloos, Stefaan Bouchez, Marc Coppens, Luc De Baerdemaeker, Isabel Deblaere, Ann De Bruyne, Stefan De Hert, Kristine Fonck, Bjorn Heyse, Tom Jacobs, Koen Lapage, Anneliese Moerman, Martine Neckebroek, Aliaksandra Parashchanka, Nathalie Roels, Nancy Van Den Eynde, Michael Vandenheuvel, JurgenVan Limmen, AnnVanluchene, CarolineVanpeteghem, Patrick Wouters, Piet Wyffels, Christel Huygens, PunithaVandenbempt, Marc Van de Velde, Dimitri Dylst, Bruno Janssen, Evelien Schreurs, Fábia Berganton Aleixo, Keulle Candido, Hugo Dias Batista, Mario Guimarães, Jaqueline Guizeline, João Hoffmann, Suzana Lobo, Francisco Ricardo Marques Lobo, Vinícius Nascimento, Katia Nishiyama, Lucas Pazetto, Daniela Souza, Rodrigo Souza Rodrigues, Ana Maria Vilela Santos, Jaquelline Jardim, Joao Silva, Paulo Nascimento Junior, Thalissa Hermínia Baio, Gabriel Isaac Pereira Castro, Henri Roger Watanabe Oliveira, Cristina Prata Amendola, Gutemberg Cardoso, Daniela Ortega, Ana Flavia Brotto, Mirella Cristine De Oliveira, Álvaro Réa-Neto, Fernando Dias, Pedro Azambuja, Marcos Freitas Knibel, Antonio Martins, William Almeida, Calim Neder Neto, Maria Angela Tardelli, Eliana Caser, Marcio Machado, Crisitiano Aguzzoli, Sérgio Baldisserotto, Fernanda Beck 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Tsang, Man Shing Tsang, Man Ling Lai, Chi Pang Yip, Hey Man Heymans Chan, Bassanio Law, Wing Sze Li, Hiu Man Chu, Emily Gar Yee Koo, Chi Cheong Joe Lam, Ka Ho Cheng, Matthew Chan, Tracy Lam, Susanna Chu, Man Ling Lai, Kin Wai Kevin Wong, Dilys Kwok, Ching Yue Janice Hung, Wai Kit Jacky Chan, Wing LamWong, Chun Kwong Eric Chung, Man Ling Lai, Shu Kai Ma, Shuchi Kaushik, Bhagyesh Shah, Dhiren Shah, Sanjay Shah, Praburaj Ar, Radhakrishnan Muthuchellappan, Vandana Agarwal, Jigeeshu Divatia, Atul Kulkarni, Sanghamitra Mishra, Ganesh Nimje, Swati Pande, Sukhada Savarkar, Aditi Shrivastava, Martin Thomas, Shashikant Yegnaram, Rahmat Hidayatullah, Susilo Chandra, Aida Tantri, Nasman Puar, Sumara Niman, Imai Indra, Zulkarnain Hamzah, Annika Yuliana, Ucu Nurhadiat Abidin, Ade Nurkacan Dursin, Andri Kurnia, Ade Susanti, Dini Handayani, Mahaalit Aribawa Alit, Aryabiantara Arya, Tjokorda Gde Agung Senapathi, Utara Hartawan Utara, Widnyana Made Wid, Semarawima Wima, Wiryana Made Wir, Brillyan Jehosua, Jonathan Kaunang, Eka Yudha Lantang, Rini Najoan, Neil Waworuntu, Hadi Awad, Akram Fuad, Emad Geddoa, Burair Geddoa, Abdel Razzaq Khalaf, Safauldeensalem Albaj, Maithem Kenber, Alessandra Bettinelli, Savino Spadaro, Carlo AlbertoVolta, Luigi Giancarlo Vicari Sottosanti, Giorgio Della Rocca, Lorenzo Spagnesi, Ilaria Toretti, Chiara Alloj, Silvano Cardellino, Livio Carmino, Eleonora Costanzo, Lucia Caterina Fanfani, Maria Teresa Novelli, Agostino Roasio, Mattia Bellandi, Luigi Beretta, Elena Bignami, Speranza Bocchino, Luca Cabrini, Daniele Corti, Giovanni Landoni, Roberta Meroni, Elena Moizo, Giacomo Monti, Margherita Pintaudi, Valentina Paola Plumari, Daiana Taddeo, Valentina Testa, Dario Winterton, Alberto Zangrillo, Luigi Maria Cloro, Chiara Colangelo, Antonio Colangelo, Rotunno Giuseppe, Miguel Angel Paludi, Cloro Paolo Maria, Antonio Pata, Vieri Parrini, Alessandro Gatta, Mauro Nastasi, Carla Tinti, Lorenzo Spagnesi, Mario Arrigo, Angelo Benevento, Corrado Bottini, Christian Gastaldi, Alessandro Marchesi, Angelantonio Pascazio, Francesco Pata, Emilio Pozzi, Alberto Premoli, Gaetano Tessera, Luca Boschi, Rocco D'Andrea, Federico Ghignone, Gilberto Poggioli, Andrea Sibilio, Mario Taffurelli, Giampaolo Ugolini, Mohd Azuan Ab Majid, Rusnah Ab Rahman, James Joseph, Furquan Pathan, Mohammad Hafizshah Sybil Shah, Huey Ling Yap, Seleen Cheah, Im Im Chin, Ji Keon Looi, Siew Ching Tan, Sheshendrasurian Visvalingam, Fan Yin Kwok, Chew Kiok Lee, Tse Siang Tan, Sze Meng Wong, Noor Hairiza Abdullah, Chiat Fong Liew, Lovenia Luxuman, Nor Hafizah Mohd Zin, Muhamad Faiz Norddin, Raja Liza Raja Alias, Juan Yong Wong, Johnny Yong, Mohd Tarmimi Bin Mustapha, Weng Ken Chan, Norizawati Dzulkipli, Pei Xuan Kuan, Yew Ching Lee, Anita Alias, Eng Ching Guok, Chiun Chen Jee, Brian Rhadamantyne Ramon, Cheng Weng Wong, Fara Nur Idayu Abd Ghafar, Faizal Zuhri Aziz, Nabilah Hussain, Hooi Sean Lee, Ismawaty Sukawi, Yuan Liang Woon, Husni Zaeem Abd Hadi, Ummi Azmira Ahmad Azam, Abdul Hafiz Alias, Saiful Aizar Kesut, Jun May Lee, Dar Vin Ooi, Hetty Ayuni Sulaiman, Tengku Alini Tengku Lih, Marzida Mansor, Jeyaganesh Veerakumaran, Pastor Luna, Eder Rojas, Armando Adolfo Alvarez Flores, Juan Carlos Bravo Amador, Erendira Jocelin Dominguez Avila, Laura Patricia González Aquino, Ricardo Lopez Rodriguez, Mariana Torres Landa, Emma Urias, Markus Hollmann, Abraham Hulst, Osne Kirzner Benedikt Preckel, Ankie Koopman-van Gemert, Arthur Bouwman, Marc Buise, Noortje Tolenaar, Eric Weber, Jennifer Fretes, Peter Houweling, Patricia Ormskerk, Jasper Van Bommel, Wolfgang Buhre, Marcus Lance, Valerie Smit-Fun, Tom Zundert, Peter Baas, Hans Donald Boer, Joost Sprakel, Renske Elferink-Vonk, Peter Noordzij, Laura Zeggeren, Bastiaan Brand, Sandra Numan, Wilton Klei, Bas Zaane, Christa Boer, Yoni Duivenvoorde, Jens Peter Hering, Harry Zonneveldt, Doug Campbell, Siobhan Hoare, Sahayam Santa, Rachel Bell, Hyun-min David Choi, Matthew Drake, Helen Farrell, Kushlin Higgie, Kerry Holmes, Nicole Jenkins, Chang Joon Kim, Steven Kim, Kiew Chai Law, Davina McAllister, Karen Park, Karen Pedersen, Leesa Pfeifer, Timothy Salmond, Martin Steynor, Michael Tan, Ellen Waymouth, Ahmad Sufian Ab Rahman, John Armstrong, Rosie Dudson, Nia Jenkins, Jayashree Nilakant, Seigne Richard, Pardeep Virdi, Liane Dixon, Roana Donohue, Mehreen Farrow, Ross Kennedy, Henderson Marissa, Margie McKellow, Delany Nicola, Rebecca Pascoe, Stephen John Roberts, George Rowell, Matthew Sumner, Paul Templer, Shardha Chandrasekharan, Graham Fulton, Ib Jammer, Marlynn Ali, Richard More, Leona Wilson, Yuan Hsuan Chang, Julia Foley, Carolyn Fowler, Jonathan Panckhurst, Rachel Sara, Francois Stapelberg, Doug Campbell, Veronica Cherrett, Donna Louise Ganter, Davina McAllister, Lloyd McCann, Julia Foley, Fiona Gilmour, Rachelle Lumsden, Mark Moores, Sue Olliff, Elitza Sardareva, Francois Stapelberg, Joyce Tai, Matthew Wikner, Christopher Wong, Mark Chaddock, Carolyn Czepanski, Patrick McKendry, Daniel 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Associated Data
This section collects any data citations, data availability statements, or supplementary materials included in this article.
Supplementary Materials
Appendix S1 Authorship (all co-authors PubMed citable)
Fig. S1 Flow chart of analysis of expert response study
Fig. S2 12-week cancellation rates based on data submitted to expert response study
Fig. S3 Calculation of estimated cancellations from total surgical volume
Fig. S4 Elective versus emergency case-mix, by HDI quintile, based on Surgical Outcomes Studies data
Fig. S5 Elective surgery case-mix, by HDI quintile, based on Surgical Outcomes Studies data
Fig. S6 Case-mix for obstetrics versus gynaecology case-mix, by HDI quintile, based on data submitted to expert response study
Fig. S7 Case-mix for cancer versus benign surgery by specialty, by HDI quintile, based on data submitted to expert response study
Table S1 Global surgical case-mix
Table S2 Country characteristics
Table S3 Countries represented in hospital-level survey
Table S4 Country-level 12-week cancellation rates
Table S5 Surgical case-mix by Human Development Index Quintile
Table S6 Annual country-level elective surgical volumes (best estimates)
Table S7 Annual country-level elective surgical volumes (mimunum estimates)
Table S8 Annual country-level elective surgical volumes (maximum estimates)
Table S9 Country-level totals for cancelled operations over a 12-week period
Table S10 Country-level totals for cancelled operations over a 12-week period and estimates