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recent interest in heterosexual anal intercourse has been generated from several research perspectives. In the united states, general population surveys have suggested that the prevalence of anal intercourse among heterosexuals has increased over time (leichliter, 2008). Heterosexual anal intercourse prevalence, cultural factors, and hiv infection and other health risks, part i. Author information (1)international center for hivaids research and clinical training in nursing, university of california, san francisco, usa. Studies of heterosexual hiv transmission have consistently found anal intercourse to be a highly predictive risk factor for seroconversion. download citation heterosexual anal intercourse prevalence, cultural factors, and hiv infection and other health risks, part i studies of heterosexual hiv transmission have consistently found. 1 although recent studies have helped elucidate correlates of hai in the u. , little is known regarding womens perceptions of hai and motivations for engaging in this sexual behavior. 2 research interest in hai stems from the higher transmission rates of hiv and other sexually. Sexual scripting of heterosexual penile-anal intercourse amongst participants in an hiv prevention trial in south africa, uganda and zimbabwe. Anal sex is currently a hot topic of discussion for it is increasingly prevalent among young men and women, and older adults. 1 in 2007, a study based on the national survey of family growth (nsfg), found that one-third of u. 6 of women aged 18 to 44 had engaged in heterosexual anal intercourse in their lifetime a 1992 survey had found that 25. 4 of women reported lifetime heterosexual anal inter course (mosher, chandra, & jones, 2005). Sexual intercourse (or coitus or copulation) is sexual activity typically involving the insertion and thrusting of the penis into the vagina for sexual pleasure, reproduction, or both. Other forms of penetrative sexual intercourse include anal sex (penetration of the anus by the penis), oral sex (penetration of the mouth by the penis or.). Anal sex or anal intercourse is generally the insertion and thrusting of the erect penis into a persons anus, or anus and rectum, for sexual pleasure. Other forms of anal sex include fingering, the use of sex toys for anal penetration, oral sex performed on the anus (), and pegging. Although anal sex most commonly means penileanal penetration, sources sometimes use anal intercourse to.