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Predicting subsequent infection in patients attending sexually transmitted disease clinics.

Sexually Transmitted Diseases 2006; 33(12):737-742.

Newman LM, Warner L, Weinstock HS.

Abstract
OBJECTIVE/GOAL: The objective of this study was to identify characteristics associated with subsequent infection in patients attending a sexually transmitted disease (STD) clinic. STUDY DESIGN: Records were retrospectively reviewed for patients from public STD clinics in 4 cities for 12 months after their initial visit to assess subsequent infection with gonorrhea, chlamydia, mucopurulent cervicitis, nongonococcal urethritis, pelvic inflammatory disease, primary or secondary syphilis, or trichomoniasis. RESULTS: Among 64,463 patients, 33.9% had an initial STD and 7.0% had a subsequent STD. Patients with an initial STD had significantly higher probability of a subsequent STD than patients without (12.0% vs. 4.4%). A subsequent STD was significantly more likely for both sexes for those with an initial STD, who were symptomatic at initial visit, reporting exchange of sex, or under age 20 as well as for men reporting sex with men. CONCLUSIONS: Patients with an initial STD were more likely to return with a subsequent STD. Routinely collected information such as initial diagnosis or age can help identify patients at increased risk of a subsequent STD.