TABLE I.
Patient Characteristics by Infection Status
| Infection Status |
|||||
| No. of Patients with Data | No (N = 2181) | Yes (N = 17) | Combined (N = 2198) | Test Statistic | |
| Age* (yr) | 2198 | 26.8 ± 11.0 (17/24/35) | 24.5 ± 9.6 (18/20/30) | 26.8 ± 11.0 (17/24/35) | F1,2196 = 0.25, p = 0.62† |
| BMI* (kg/m2) | 2161 | 25.7 ± 4.8 (22.4/25.0/28.1) | 25.2 ± 6.1 (23.0/24.4/25.8) | 25.7 ± 4.8 (22.4/25.0/28.1) | F1,2159 = 1, p = 0.31† |
| Diabetes | 2198 | χ(2/1) = 19, p < 0.001‡ | |||
| No | 99% (2160/2181) | 88% (15) | 99% (2175/2198) | ||
| Yes | 1% (21/2181) | 12% (2) | 1% (23/2198) | ||
| Smoker | 2160 | χ(2/1) = 1.2, p = 0.28‡ | |||
| No | 90% (1933/2143) | 82% (14) | 90% (1947/2160) | ||
| Yes | 10% (210/2143) | 18% (3) | 10% (213/2160) | ||
| Graft type§ | 2198 | χ(2/2) = 4.7, p = 0.098‡ | |||
| BTB autograft | 43% (928/2181) | 18% (3) | 42% (931/2198) | ||
| Hamstring autograft | 29% (631/2181) | 47% (8) | 29% (639/2198) | ||
| Other | 29% (622/2181) | 35% (6) | 29% (628/2198) | ||
*
The values are given as the mean and standard deviation, with percentiles (25th, 50th, and 75th) for continuous variables in parentheses.
†
Wilcoxon test.
‡
Pearson test.
§
BTB = bone-tendon-bone.