The CDC investigators assumed that all couples would have sex 6 times monthly: 3 insertive anal and 3 receptive anal sex acts for each gay man, and 6 vaginal sex
acts for each heterosexual man or woman.
Hormonal contraceptive use at last vaginal sex
had a negative effect (OR = 0.
021) Ever had vaginal intercourse (N = 2,648) (5) Overweight or obese n/a n/a (6) BMI > 85th percentile in school n/a n/a Vaginal Sex
Under Intercourse Influence of without Condom Alcohol (c) (d) Full sample (N = 5,198) (1) Overweight or obese -.
66) Sexual Behavior Number of Vaginal Sex
Acts in Past Two 31.
14) to have vaginal sex
without a condom (see Table 2).
The analysis sample for the present study consists of the 386 unmarried female college students who: a) participated in both interviews; b) had vaginal sex
at least once in their lives by their first interview; and, c) provided complete data on all variables for the present analyses.
No one can now question the potential public health benefit of male circumcision in relation to the HIV epidemic in high prevalence settings, at least to (partially) protect men having heterosexual vaginal sex
The last time they had vaginal sex
with men, 82% claimed that their partner used a condom.
However, surveys of risk behaviors within some WSW groups indicate relatively high rates of high-risk behaviors, such as injection drug use and unprotected vaginal sex
with gay/bisexual men and injection drug users.
Moreover, limiting the discussion to vaginal sex
provides only a partial picture of teenage sexual behavior.
When having anal or vaginal sex
, avoid getting semen in the body by having the man pull out before cumming.
Approximately 89% (n = 2021) of the sample had willingly engaged in vaginal sex