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Table 2 Association between Stress Fracture Incidence and Body Fat

From: Association between stress fracture incidence and predicted body fat in United States Army Basic Combat Training recruits

Sex Percentile Body Fat Range (%) n Injury Incidence (cases/1000) Logistic Regression Odds Ratio (95%CI) p-value
Men 1–10 < 8.90 47,545 23.7 1.27 (1.17–1.40) < 0.01
11–20 8.90–10.62 47,603 18.2 0.98 (0.89–1.07) 0.62
21–30 10.63–12.08 47,382 16.6 0.87 (0.79–0.96) 0.02
31–40 12.09–13.51 47,706 16.3 0.90 (0.82–0.99) < 0.01
41–50 13.52–15.05 47,431 16.8 0.89 (0.81–0.98) 0.03
51–60 15.06–16.73 47,778 18.6 1.00 Referent
61–70 16.74–18.60 47,579 20.0 1.07 (0.98–1.18) 0.13
71–80 18.61–20.61 47,525 20.4 1.10 (1.00–1.20) 0.05
81–90 20.62–23.52 47,605 21.1 1.14 (1.04–1.24) < 0.01
91–100 ≥ 23.53 47,591 21.4 1.15 (1.05–1.26) < 0.01
Women 1–10 < 22.90 10,779 90.1 1.20 (1.09–1.32) < 0.01
11–20 22.90–24.56 10,802 81.4 1.07 (0.97–1.18) 0.18
21–30 24.57–25.97 10,805 80.2 1.05 (0.95–1.16) 0.32
31–40 25.98–27.23 10,752 79.6 1.04 (0.95–1.16) 0.38
41–50 27.24–28.53 10,712 76.6 1.00 Referent
51–60 28.54–29.55 10,827 81.0 1.06 (0.96–1.18) 0.22
61–70 29.56–30.78 10,842 80.8 1.06 (0.96–1.17) 0.24
71–80 30.79–32.21 10,788 72.8 0.95 (0.86–1.05) 0.30
81–90 32.22–34.20 10,793 77.3 1.01 (0.92–1.12) 0.83
91–100 ≥ 34.21 10,806 79.2 1.04 (0.94–1.15) 0.45