On the other hand, White freshmen were more likely to use birth control pills during last vaginal sex
than Hispanic freshmen (29.
Anal sex by gay or straight couples carries a much higher HIV transmission risk than vaginal sex
by straight couples.
In other words, women who reported condoms as their preferred method of contraception were 23 times more likely to report using condoms at last vaginal sex
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 -.
At baseline and again at follow-up time points of 6, 12, 18, and 24 months, the women completed ACASIs that asked how many times they had had vaginal sex
in the past 6 months and whether they had used a condom every time.
Number of grams of methamphetamine used in the previous 30 days, total number of anal sex acts, and total number of vaginal sex
acts yielded positively skewed distributions.
Yet, during the same time period, a significant proportion of study participants reported having had vaginal sex
30) to engage in unprotected vaginal sex
than African American adolescents.
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.
11,22) In contrast, data from the 2002 National Survey of Family Growth (NSFG) among 15- to 19-year-olds indicate greater likelihood of initiating vaginal sex
prior to other types of sex.
A total of 6 202 participants, who were randomly assigned by a block randomisation scheme to Carraguard (N = 3 103) or placebo (methylcellulose (N = 3 099)), were instructed to use one applicator of gel plus a condom during each vaginal sex
Participants were asked: (a) "Did you use a condom the last time you had vaginal sex
with your boyfriend or steady partner?