Table 1.
Preoperative Injection Timing by Patient Demographics and Comorbidities.
| Characteristic | Injection timing | value | ||||
|---|---|---|---|---|---|---|
| None | <30 days | 30-60 days | 61-90 days | 91-180 days | ||
| Total | 206 508 (92.2%) | 2600 (1.16%) | 5034 (2.25%) | 3645 (1.62%) | 6112 (2.72%) | — |
| Age category, y | ||||||
| <45 | 37 240 (18.03%) | 577 (22.19%) | 1185 (23.54%) | 902 (24.75%) | 1453 (23.77%) | <.001 |
| 45-54 | 58 079 (28.12%) | 718 (27.62%) | 1428 (28.37%) | 1018 (27.93%) | 1781 (29.14%) | |
| 55-64 | 69 756 (33.78%) | 796 (30.62%) | 1492 (29.64%) | 1158 (31.77%) | 1909 (31.23%) | |
| >65 | 41 433 (20.06%) | 509 (19.58%) | 929 (18.45%) | 567 (15.56%) | 969 (15.85%) | |
| Sex | ||||||
| Male | 75 992 (36.80%) | 956 (36.77%) | 1707 (33.91%) | 1150 (31.55%) | 1757 (28.75%) | < .001 |
| Female | 130 516 (63.20%) | 1644 (63.23%) | 3327 (66.09%) | 2495 (68.45%) | 4355 (71.25%) | |
| Number of comorbidities | ||||||
| 0 | 85 693 (41.50%) | 1034 (39.77%) | 2039 (40.50%) | 1524 (41.81%) | 2637 (43.14%) | .111 |
| 1 | 55 851 (27.05%) | 727 (27.96%) | 1376 (27.33%) | 979 (26.86%) | 1655 (27.08%) | |
| 2 | 36 235 (17.55%) | 450 (17.31%) | 894 (17.76%) | 652 (17.89%) | 1017 (16.64%) | |
| 3 | 17 465 (8.46%) | 218 (8.38%) | 433 (8.60%) | 285 (7.82%) | 483 (7.90%) | |
| 4+ | 11 264 (5.45%) | 171 (6.58%) | 292 (5.80%) | 205 (5.62%) | 320 (5.24%) | |
| Surgery type | ||||||
| Open | 164 544 (79.68%) | 1991 (76.58%) | 3929 (78.05%) | 2790 (76.54%) | 4703 (76.95%) | .059 |
| Endoscopic | 41 964 (20.32%) | 609 (23.42%) | 1105 (21.95%) | 855 (23.46%) | 1409 (23.05%) | |
| Smoking status | ||||||
| No | 91 232 (92.60%) | 2379 (91.50%) | 4596 (91.30%) | 3359 (92.15%) | 5684 (93.00%) | < .001 |
| Yes | 15 276 (7.40%) | 221 (8.50%) | 438 (8.70%) | 286 (7.85%) | 428 (7.00%) | |