Background
Sexually transmitted infections (STIs) are prevalent in the U.S. military. However, there are limited data on risk-factor differences between genders.
Methods
We used data from the 2008 Department of Defense Survey of Health Related Behaviors among Active Duty Military Personnel to identify risk factors for self-reported STIs within the past 12 months and multiple sexual partners among sexually active unmarried service members.
Results
There were 10,250 active duty personnel; mostly White (59.3%) aged 21-25 years (42.6%). The prevalence of any reported STI in the past 12 months was 4.2% for men and 6.9% for women. One-fourth of men and 9.3% of women reported five or more sexual partners in the past 12 months. Binge drinking, illicit substance use, and unwanted sexual contact were associated with increased report of sexual partners among both genders. Family/personal-life stress and psychological distress influenced number of partnerships more strongly for women than for men (Adjusted Odds Ratio [AOR]=1.58, 95% Confidence Interval [CI]=1.18-2.12 and AOR=1.41, 95% CI=1.14-1.76, respectively). After adjusting for potential confounders, we found that report of multiple sexual partners was significantly associated with report of an STI among men (AOR=5.87, 95% CI=3.70, 9.31 for five or more partners; AOR=2.35, 95% CI=1.59, 3.49 for 2-4 partners) and women (AOR=4.78, 95% CI=2.12, 10.80 for five or more partners; AOR=2.35, 95% CI=1.30, 4.25 for 2-4 partners).
Conclusions
Factors associated with report of increasing sexual partnerships and with report of an STI differed by gender. Gender-specific intervention strategies may be most effective in mitigating the factors that influence risky sexual behaviors among military personnel.