Table 1. Population Characteristics.
| Characteristic | Patients, No. (%) | Change in 2020 vs 2019, %b | |
|---|---|---|---|
| January 1-December 31, 2019 | January 1-December 31, 2020a | ||
| Total patients undergoing surgical treatmentc | 6 651 921 (100) | 5 973 573 (100) | −10.2 |
| Sex of patient | |||
| Women | 3 516 569 (52.9) | 3 156 240 (52.8) | −10.2 |
| Men | 3 133 462 (47.1) | 2 815 598 (47.1) | −10.1 |
| Missing or unknown | 1890 (0.03) | 1735 (0.03) | −8.2 |
| Age of patient, y | |||
| <18 | 613 192 (9.2) | 482 637 (8.1) | −21.3 |
| 18-49 | 2 131 729 (32.0) | 1 943 830 (32.5) | −8.8 |
| 50-64 | 1 816 497 (27.3) | 1 647 729 (27.6) | −9.3 |
| 65-79 | 1 554 545 (23.4) | 1 421 468 (23.8) | −8.6 |
| ≥80 | 432 852 (6.5) | 384 606 (6.4) | −11.1 |
| Missing or unknown | 103 106 (1.6) | 93 303 (1.6) | −9.5 |
| Census region | |||
| Northeast | 1 411 226 (21.2) | 1 157 462 (19.4) | −18.0 |
| Midwest | 1 816 038 (27.3) | 1 632 979 (27.3) | −10.1 |
| West | 1 051 524 (15.8) | 995 559 (16.7) | −5.3 |
| South | 2 373 133 (35.7) | 2 187 573 (36.6) | −7.8 |
a
While data in this study extended to January 30, 2021, this table depicts only calendar year 2019 and 2020 in order to make yearly comparisons of absolute values.
b
Difference in absolute volume as a percentage of 2019 volume.
c
Represents claims filed; only the first patient claim per calendar day was included. Vermont was excluded, as explained in Methods.