Table 2.
Overall number of surgeries, numbers for elective, emergency and oncologic surgery and timing (core time, shift time) during the second wave compared to corresponding period 2015/2016–2019/2020
| Mean 2015/2016–2019/2020 with 95% CIa |
2020/2021 | Estimate with 95% CIb |
Decrease (%)c | p valued | |
|---|---|---|---|---|---|
| Total number of surgeries | 11,467.4 (11,373.7 to 11,561.7) | 11,082 | 385.4 (291.7 to 479.7) | 3.22 (−1.89 to 8.32) | < 0.0001 |
| Elective surgeries | 6579.6 (6508.7 to 6651.1) | 6460 | 119.6 (48.7 to 191.1) | 1.79 (−0.34 to 3.93) | 0.0009 |
| Emergency surgeries | 3645.4 (3592.7 to 3698.7) | 3432 | 213.4 (160.7 to 266.7) | 5.15 (−5.7 to 16) | < 0.0001 |
| Oncological surgeries | 1239.8 (1209.1 to 1271.1) | 1186 | 53.8 (23.1 to 85.1) | 3.89 (−5.06 to 12.84) | 0.0005 |
| Core time surgeries | 10,010 (9922.5 to 10,098.1) | 9776 | 234 (146.5 to 322.1) | 2.2 (−2.89 to 7.28) | < 0.0001 |
| Shift time surgeries | 1457.4 (1424.1 to 1491.3) | 1306 | 151.4 (118.1 to 185.3) | 10.12 (3.36 to 16.89) | < 0.0001 |
a Estimated mean based on a Poisson distribution
b Estimated mean difference based on a Poisson distribution
c Mean decrease calculated 100/(number of surgeries during comparison period) * (number of surgeries during comparison period − number of surgeries during lockdown period) with standard parametric CI for mean
d Assessed by Poisson test