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. Author manuscript; available in PMC: 2013 Mar 26.
Published in final edited form as: J Sex Med. 2010 Apr 1;7(7):2391–2400. doi: 10.1111/j.1743-6109.2010.01794.x

Table 2.

Sexual practices and function among heterosexual, homosexual, and bisexual male medical students

Heterosexual Homosexual Bisexual



Mean SD Mean SD Mean SD P value
Age of first intercourse   18.8   2.7 18.6   2.7 18.3   2.4   0.59
N % N % N %
Virgin (no intercourse) 113 14.6 11   9.1   6 26.1   0.07
Current sexual relationship 518 67.1 55 45.5 13 56.5 <0.001
# Sex partners (last 6 months)
   0   50   7.6   9   8.2   2 11.8 <0.001
   1 473 72.0 48 43.6   7 41.2
   2+ 134 20.4 53 48.3   8 47.1
# Sex partners (lifetime)
   1 154 23.6   4   3.8   1   5.9 <0.001
   2–5 238 36.4 25 23.9   6 35.3
   6–10 129 19.7 25 23.6   5 29.4
   11+ 133 20.3 52 49.1   5 29.4
Erectile dysfunction
   IIEF-EF >26 551 87.6 71 75.5 11 78.6   0.02
   IIEF-EF 22–25   51   8.1 14 14.9   3 21.4
   IIEF-EF 17–21   22   3.5   6   6.4   0   0
   IIEF-EF 11–16     4   0.6   1   1.1   0   0
   IIEF-EF 6–10     1   0.2   2   2.1   0   0
Premature ejaculation (PE)
   PE   71 16.2 13 17.3   3 33   0.68
   No PE 334 76.0 57 76.0   5 55.6
   High-risk of PE   33   7.5   5   6.7   1 11.0
How do you feel about your sexual function at this time?
   Sexual function is not an issue for me   36   4.8   5   4.2   0   0   0.05
   Satisfied, desire no change 226 30.4 27 22.7   3 13.6
   Mostly satisfied, desire change 375 50.4 60 50.4 16 72.7
   Dissatisfied, desire no change   13   1.8   2   1.7   1   4.6
   Dissatisfied, desire change   74 10 19 16   0   0
   I feel I have a sex dysfunction, and desire change   20   2.7   6   5   2   9.1
SEAR Mean SD Mean SD Mean SD
Sex relationship   83 13.3 81 13.8 77.7 14.2   0.23
Confidence   87.8 12.9 84.7 12.8 79.5 15   0.02
Self-esteem   88.3 14.4 85 15.7 75.8 18   0.003
Relationship   87 14.8 84 15.3 86.9 13.2   0.36
Total   85 12.2 82.6 12.6 78.5 13.8   0.08

SD = standard deviation; IIEF-EF = International Index of Erectile Function-erectile function domain; SEAR = Self-Esteem and Relationship quality instrument.