Table 3 Multivariate Association between Stress Fractures, Body Fat, and Race/Ethnicity
Sex | Variable | Strata | n | Injury Incidence (cases/ 1000) | Multivariate Logistic Regression Odds Ratio (95%CI) | p-value |
|---|---|---|---|---|---|---|
Men | Body Fat | < 8.90% | 47,545 | 23.7 | 1.27 (1.16–1.39) | < 0.01 |
8.90–10.62% | 46,603 | 18.2 | 0.98 (0.89–1.07) | 0.61 | ||
10.63–12.08% | 47,382 | 16.6 | 0.89 (0.81–0.98) | 0.02 | ||
12.09–13.51% | 47,706 | 16.5 | 0.89 (0.80–0.97) | 0.01 | ||
13.52–15.05% | 47,431 | 16.6 | 0.89 (0.81–0.99) | 0.04 | ||
15.06–16.73% | 47,778 | 18.7 | 1.00 | Referent | ||
16.74–18.60% | 47,579 | 20.0 | 1.07 (0.97–1.17) | 0.17 | ||
18.61–20.61% | 47,525 | 20.4 | 1.08 (0.99–1.19) | 0.09 | ||
20.62–23.52% | 47,605 | 21.1 | 1.13 (1.03–1.23) | 0.01 | ||
≥ 23.53% | 47,591 | 21.4 | 1.17 (1.07–1.28) | < 0.01 | ||
Race/Ethnicity | Black | 72,155 | 12.2 | 1.00 | Referent | |
White | 324,089 | 21.0 | 1.72 (1.60–1.85) | < 0.01 | ||
Hispanic | 52,684 | 19.3 | 1.56 (1.43–1.71) | < 0.01 | ||
Asian | 15,439 | 17.0 | 1.38 (1.20–1.59) | < 0.01 | ||
Am Indian | 4812 | 21.8 | 1.75 (1.42–2.15) | < 0.01 | ||
Other | 1393 | 25.8 | 2.12 (1.52–2.98) | < 0.01 | ||
Unknown | 5173 | 16.0 | 1.31 (1.04–1.64) | 0.02 | ||
Women | Body Fat | < 22.90% | 10,779 | 90.1 | 1.22 (1.11–1.35) | < 0.01 |
22.90–24.56% | 10,802 | 81.4 | 1.09 (0.98–1.20) | 0.10 | ||
24.57–25.97% | 10,805 | 80.2 | 1.06 (0.96–1.18) | 0.22 | ||
25.98–27.23% | 10,752 | 79.6 | 1.05 (0.95–1.16) | 0.35 | ||
27.24–28.53% | 10,712 | 76.6 | 1.00 | Referent | ||
28.54–29.55% | 10,827 | 81.1 | 1.07 (0.97–1.18) | 0.21 | ||
29.56–30.78% | 10,842 | 80.8 | 1.06 (0.96–1.17) | 0.23 | ||
30.79–32.21% | 10,788 | 72.6 | 0.95 (0.86–1.06) | 0.35 | ||
32.22–34.20% | 10,793 | 77.4 | 1.03 (0.93–1.13) | 0.63 | ||
≥ 34.21% | 10,806 | 79.2 | 1.07 (0.97–1.18) | 0.18 | ||
Race/Ethnicity | Black | 31,661 | 60.9 | 1.00 | Referent | |
White | 55,580 | 90.5 | 1.54 (1.46–1.63) | < 0.01 | ||
Hispanic | 13,388 | 81.5 | 1.37 (1.27–1.48) | < 0.01 | ||
Asian | 3608 | 76.8 | 1.28 (1.12–1.46) | < 0.01 | ||
Am Indian | 1784 | 81.3 | 1.37 (1.15–1.64) | < 0.01 | ||
Other | 428 | 102.8 | 1.77 (1.29–2.43) | < 0.01 | ||
Unknown | 1457 | 74.1 | 1.23 (1.01–1.51) | 0.04 |