Table 1.
Baseline Characteristics of College Athlete Study Participants, 2012 to 2018a
| Male Athletes (n = 497) | Female Athletes (n = 305) | |
|---|---|---|
| Age, y | 18.7 ± 1.2 | 18.6 ± 1.2 |
| BMI, kg/m2 | 25.5 ± 5 | 21.9 ± 3 |
| Baseline vitamin D, ng/mL | 37.5 ± 12.7 | 43.5 ± 14.7 |
| Race | ||
| Black | 111 (22) | 47 (15) |
| White | 270 (54) | 197 (65) |
| Other | 116 (24) | 61 (20) |
| Family history of osteoporosis | 1 (<1) | 6 (2) |
| Average daily servings of dairy | ||
| ≤2 | 225 (46) | 193 (63) |
| 3-5 | 238 (48) | 104 (34) |
| ≥6 | 31 (6) | 7 (2) |
| Birth control | ||
| Oral contraceptives | N/A | 124 (41) |
| Depo-Provera | N/A | 8 (3) |
| Progesterone | N/A | 7 (2) |
| None | N/A | 166 (54) |
| History of amenorrhea | N/A | 29 (10) |
aData are reported as mean ± SD or n (%). All variables have missing rates <5%. BMI, body mass index; N/A, medications or conditions that would only be applicable to females.