Table 1. Demographics and medical history at enrollment for a cohort of 377 college student athletes at Vanderbilt University, by type of sport.
| Variable | Total Cohort N=377 N(%) |
Non-contact N=153 N(%) |
Contact N=224 N(%) |
Time-to-event cohort N=186 N(%) |
|---|---|---|---|---|
| Gender | ||||
| Female | 161 (42.71) | 79 (51.63) | 82 (36.61) | 94 (50.54) |
| Male | 216 (57.29) | 74 (48.37) | 142 (63.39) | 92 (49.46) |
| Race/Ethnicity | ||||
| Caucasian | 280 (74.27) | 133 (86.93) | 147 (65.62) | 141 (75.81) |
| African-American | 80 (21.22) | 11 (7.19) | 69 (30.80) | 38 (20.43) |
| Other | 17 (4.51) | 9 (5.88) | 8 (3.57) | 7 (3.76) |
| College Year | ||||
| Freshman | 149 (39.52) | 64 (41.83) | 85 (37.95) | 79 (42.47) |
| Sophomore | 87 (23.08) | 36 (23.53) | 51 (22.77) | 41 (22.04) |
| Junior | 70 (18.57) | 23 (15.03) | 47 (20.98) | 34 (18.28) |
| Senior | 59 (15.65) | 18 (11.76) | 41 (18.30) | 25 (13.44) |
| Trainers | 12 (3.18) | 12 (7.84) | 0 (0.00) | 7 (3.76) |
| History of S. aureus infection | ||||
| No | 355 (94.16) | 148 (96.73) | 207 (92.41) | 179 (96.24) |
| Yes | 22 (5.84) | 5 (3.27) | 17 (7.59) | 7 (3.76) |
| S. aureus infection in contacts | ||||
| No | 261 (69.23) | 122 (79.74) | 139 (62.05) | 127 (68.28) |
| Yes | 116 (30.77) | 31 (20.26) | 85 (37.95) | 59 (31.72) |
| Previous surgeries | ||||
| No | 275 (72.94) | 126 (82.35) | 149 (66.52) | 140 (75.27) |
| Yes | 102 (27.06) | 27 (17.65) | 75 (33.48) | 46 (24.73) |
| Comorbidities | ||||
| No | 362 (96.02) | 148 (96.73) | 214 (95.54) | 180 (96.77) |
| Yes | 15 (3.98) | 5 (3.27) | 10 (4.46) | 6 (3.23) |
| Antibiotics in Previous 6 Months | ||||
| No | 329 (87.27) | 132 (86.27) | 197 (87.95) | 156 (83.87) |
| Yes | 48 (12.73) | 21 (13.73) | 27 (12.05) | 30 (16.13) |
| Staphylococcal carrier profilea | ||||
| Non-carriers | 90 (23.87) | 55 (35.95) | 35 (15.62) | 90 (48.39) |
| Intermittent carriers | 200 (53.05) | 63 (41.18) | 137 (61.16) | 96 (51.61) |
| Persistent carriers | 87 (23.08) | 35 (22.88) | 52 (23.21) | 0 (0.00) |
| Number of months swabbed | ||||
| ≤5 months | 112 (29.71) | 80 (52.29) | 32 (14.28) | 64 (34.41) |
| <5 and <13 months | 162 (42.97) | 60 (39.21) | 102 (45.54) | 76 (40.86) |
| ≥13 months | 103 (27.32) | 13 (8.50) | 90 (40.18) | 46 (24.73) |
a
Staphylococcal carrier profile was measured over up to 18 months