Utility of behavioral changes as markers of sexually transmitted disease risk reduction in sexually transmitted disease/HIV prevention trials. J Acquir Immune Defic Syndr 2002 Sep 01;31(1):71-9
Date
09/28/2002Pubmed ID
12352153DOI
10.1097/00126334-200209010-00010Scopus ID
2-s2.0-0036740223 (requires institutional sign-in at Scopus site) 30 CitationsAbstract
Most sexually transmitted disease (STD)/HIV sexual risk reduction intervention trials are evaluated using behavioral outcomes as their main indicators of intervention effectiveness. How good are behavioral measures as surrogate markers for STD infection? Do the behavioral changes that are commonly assessed in risk reduction interventions accurately reflect changes in STD risk? We applied a mathematical model of STD/HIV transmission to empiric data from a large HIV prevention intervention to estimate pre- to postintervention changes in intervention participants' STD risk. We then used the coefficient of determination (R(2)) to assess the strength of association between changes in STD risk and changes in three behavioral measures: proportion of acts of intercourse for which condoms were used, number of sex partners, and number of acts of unprotected intercourse. The results indicate that change in the number of acts of unprotected intercourse is a superior marker of STD risk changes for less infectious STDs such as HIV, whereas change in the number of partners may be preferable for highly infectious STDs such as gonorrhea. Changes in the proportion of acts of intercourse for which condoms were used were not strongly correlated with changes in STD risk under most of the conditions examined in this analysis. The utility of different measures of sexual behavior change as markers for changes in STD risk and, hence, expected incidence, depends on the infectivity and prevalence of the target STD.
Author List
Pinkerton SD, Chesson HW, Layde PM, National Institute of Mental Health Multisite HIV Prevention Trial GroupAuthor
Peter M. Layde MS, MD Emeritus Professor in the Emergency Medicine department at Medical College of WisconsinMESH terms used to index this publication - Major topics in bold
FemaleHIV Infections
Health Behavior
Humans
Male
Mathematics
Models, Biological
Sexual Behavior
Sexually Transmitted Diseases
