Irrespective of whether had intercourse: | If had intercourse and… | |||||||
---|---|---|---|---|---|---|---|---|
Did not used hormonal: | Used hormonal: | |||||||
Had intercourse | Used hormonal | Used coital (condoms or withdrawal) | Also used coital | |||||
β | OR | β | OR | β | OR | β | OR | |
Desire for sex+ | .16 | 1.18 *** | .17 | 1.18 *** | −.13 | .87 ** | −.10 | .91 * |
(.02) | (.02) | (.05) | (.05) | |||||
Personal attitudes & intentions+ | ||||||||
Approval: premarital sex | −.01 | .99 | .10 | 1.10 *** | −.07 | .94 | .05 | 1.05 |
(.02) | (.02) | (.06) | (.06) | |||||
Approval: sex w. friends | .03 | 1.03 | .07 | 1.07 ** | −.20 | .82 *** | −.11 | .90 * |
(.02) | (.02) | (.06) | (.05) | |||||
Wants to get pregnant | .67 | 1.96 *** | −.59 | .55 *** | −1.34 | .26 *** | .10 | 1.11 |
(.08) | (.09) | (.13) | (.23) | |||||
Previous experiences+ & age | ||||||||
Cum. no. sex partners | .12 | 1.13 *** | .00 | 1.00 | .02 | 1.02 | .00 | 1.00 |
(.01) | (.04) | (.04) | (.04) | |||||
Cumulative no. live births | −1.15 | .32 *** | 1.53 | 4.60 *** | 1.79 | 5.97 *** | 1.53 | 4.60 *** |
(.11) | (.22) | (.41) | (.22) | |||||
Age | −.11 | .90 *** | −.58 | .56 *** | −.62 | .54 *** | −.58 | .56 *** |
(.03) | (.11) | (.09) | (.11) | |||||
Current relationship | ||||||||
Status (ref: none) | ||||||||
Married | 3.28 | 26.57 *** | .20 | 1.23 | −1.91 | .15 *** | −2.18 | .11 *** |
(.13) | (.15) | (.34) | (.51) | |||||
Engaged | 3.14 | 23.22 *** | .51 | 1.66 *** | −.80 | .45 *** | −1.51 | .22 *** |
(.09) | (.10) | (.24) | (.30) | |||||
Special | 3.04 | 21.00 *** | .32 | 1.38 *** | −.38 | .68 * | −.87 | .42 *** |
(.05) | (.06) | (.19) | (.19) | |||||
Relationship duration | .00 | 1.00 | .00 | 1.00 | −.00 | 1.00 | −.01 | .99 |
(.00) | (.00) | (.01) | (.01) | |||||
Friend context+ | ||||||||
Friends’ approval of sex | .15 | 1.16 *** | .07 | 1.08 *** | .02 | 1.02 | .03 | 1.03 |
(.02) | (.02) | (.05) | (.06) | |||||
Prop. friends sex. active | .08 | 1.08 ** | .21 | 1.23 *** | .04 | 1.04 | −.32 | .73 *** |
(.03) | (.03) | (.08) | (.08) | |||||
Family context+ & race | ||||||||
Parents’ approval of sex | .07 | 1.07 *** | .06 | 1.06 ** | −.21 | .81 *** | −.03 | .97 |
(.02) | (.02) | (.05) | (.05) | |||||
Institutional contexts+ | ||||||||
School | ||||||||
Enrolled in college | −.07 | .93 | .24 | 1.26 *** | .05 | 1.05 | .16 | 1.17 |
(.05) | (.06) | (.14) | (.14) | |||||
Current contraceptive behavior | ||||||||
Used hormonal contra. this week | .59 | 1.80 *** | -- | -- | -- | |||
(.10) | -- | -- | -- | |||||
Desire for sex+ * Used hormonal | .09 | 1.09 *** | -- | -- | -- | |||
(.03) | -- | -- | -- | |||||
Current sexual behavior | ||||||||
Had intercourse this week | -- | .82 | 2.27 *** | -- | -- | |||
-- | (.04) | -- | -- | |||||
Observations (weeks) | 39,723 | 33,125 | 5,321 | 6,168 | ||||
Number of respondents | 679 | 537 | 244 | 244 | ||||
Reference category | Did not have intercourse | Did not use hormonal | Did not use any method | Used hormonal but not coital |
Note: In the first two models, the sample is comprised of all respondents’ study weeks. In the third model, the sample is comprised of respondents’ study weeks what they had intercourse and did not use hormonal contraception. In the last model, the sample is comprised of respondents’ study weeks when they had intercourse and used hormonal contraception. The number of respondents (and corresponding weeks) is not uniform across models because some respondents switched methods during the study. These respondents appear in multiple models.
Standard errors in parentheses,
p<0.001,
p<0.01,
p<0.05
Measures are lagged and reflect respondents’ situation as of the prior week.