Table 1. Demographics of Surgical Patients Stratified by Preoperative Urine Culture Results.
| Characteristic | No. (%) | ||||
|---|---|---|---|---|---|
| Preoperative Culture Screening | Total | ||||
| Not Performed | Negative Result | Positive Result | |||
| ASB | Symptomatic | ||||
| All patients | 50 516 | 16 994 | 617 | 138 | 68 265 |
| Male sex | 48 825 (96.7) | 16 173 (95.2) | 539 (87.4) | 127 (92.0%) | 65 664 (96.2) |
| Age, mean (SD), y | 64.5 (9.1) | 64.8 (9.4) | 69.6 (10.4) | 71.5 (10.0) | 64.6 (9.2) |
| Diabetes | 14 237 (28.2) | 4227 (24.9) | 183 (29.7) | 44 (31.9) | 18 691 (27.4) |
| Current smoker | 15 206 (30.1) | 4325 (25.5) | 150 (24.3) | 34 (24.6) | 19 715 (28.9) |
| Surgical cohort | |||||
| Cardiac | 17 076 (33.8) | 4081 (24.0) | 194 (31.4) | 48 (34.8) | 21 399 (31.3) |
| Orthopedic | 26 281 (52.0) | 11 949 (70.3) | 376 (60.9) | 74 (53.6) | 38 680 (56.7) |
| Vascular | 7159 (14.2) | 964 (5.7) | 47 (7.6) | 16 (11.6) | 8186 (12.0) |
| Race/ethnicitya | |||||
| White | 39 651 (78.5) | 13 565 (79.8) | 486 (78.8) | 104 (75.4) | 53 809 (78.8) |
| Black | 6783 (13.4) | 2117 (12.5) | 79 (12.8) | 22 (15.9) | 9001 (13.2) |
| Other | 4082 (8.1) | 1312 (7.7) | 52 (8.4) | 12 (8.7) | 5438 (8.0) |
| Ethnicitya | |||||
| Hispanic | 2307 (4.6) | 878 (5.2) | 33 (5.3) | 6 (4.3) | 3224 (4.7) |
Abbreviation: ASB, asymptomatic bacteriuria.
a
Six percent of patients had missing race data, and 3% had missing ethnicity data.