Table 3.

Hazard Ratios for Musculoskeletal Injury During Cadet Basic Training at the United States Military Academy, 2018 ^a

Potential Risk or Protective Factor	Univariate HR (95% CI)	Multivariate HR (95% CI)
Sex (female vs male)	2.63 (1.76-3.94)	2.52 (1.68-3.78)
History of injury (yes vs no)	1.76 (1.18-2.64)	1.63 (1.09-2.44)
BMI
<20 vs 20-29.99	1.52 (0.62-3.73)	N/A
≥30 vs 20-29.99	0.65 (0.16-2.63)	N/A
20 vs ≥30	2.34 (0.45-12.06)	N/A

^a BMI, body mass index; HR, hazard ratio; N/A, not applicable, not included in the multivariate model because of sparse numbers in 2 of the 3 BMI categories.