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. 2016 Aug 18;11(8):e0160487. doi: 10.1371/journal.pone.0160487

Table 1. Self-reported Demographic and Sexual Behavior of Study Participants During the Six Months Prior to Screening.*.

Characteristics N (% of total) Interquartile Range
Median age in years 24 24–26
Median Body Mass Index (BMI) 24 23–26
Self-reported sexual identity
    Homosexual 20 (69.0%)
    Bisexual 9 (31.0%)
Main sexual role
    Exclusively/mostly insertive 10 (34.4%)
    Half insertive, half receptive 9 (31.0%)
    Exclusively/mostly receptive 10 (34.5%)
Sexual behavior with men 29 (100.0%)
    Median number of sex partners 8.0 3.0–12.0
    Insertive oral sex 24 (82.8%)
    Receptive oral sex 23 (79.3%)
    Receptive anal intercourse (RAI) 22 (75.9%)
      RAI always used condoms 8 (36.4% of all RAI)
      Median number RAI partners 5.0 3.0–15.0
    Insertive anal intercourse (IAI) 23 (79.3%)
      IAI always used condoms 12 (52.2% of all IAI)
      Median number of IAI partners 5.0 2.0–10.0
Sexual behavior with women 8 (27.6%)
    Median number of female partners 1.0 1.0–2.0
    Insertive oral sex 6 (75.0%)
    Insertive anal intercourse (IAI) 5 (62.5%)
      IAI always used condoms 2 (40% of all IAI)
      Median number IAI partners 1.0 1.0–2.0
    Vaginal sex 8 (27.8%)
      Vaginal always used condoms 3 (37.5% of all vaginal)
      Median number of vaginal sex partners 1.5 1.0–2.0

* Summary enrollment data for 29 study participants