“…With the age group older than 35 years old as the referent category, the 18-to 23-year-old age group had a significantly increased adjusted IRR for becoming a psychiatric DNBI casualty, 1.80 (95% CI 1.21-2.69), while controlling for sex. Women, compared with men, had a significantly increased adjusted IRR for becoming a psychiatric DNBI casualty, 1.91 (95% CI 1.39- (0) 1.4 (7) 10.3 (53) 2.63), while controlling for rank. Significant main effects were noted for the variables of sex and rank group (Pb.002), indicating that female sex and junior enlisted rank group are important risk factors for becoming a psychiatric DNBI casualty.…”