Table 1.
Descriptive Statistics
| Mean/proportion | SD | |
|---|---|---|
| Sex and contraceptive use | ||
| Had intercourse | .33 | |
| …and used no contraception | .14 | |
| …and used hormonal contraception only | .32 | |
| …and used coital contraception only | .37 | |
| …and used hormonal and coital contraception | .17 | |
| Used hormonal contraception | .33 | |
| Desire for sex | ||
| Desire for sex (0–5) | 2.76 | 1.80 |
| Personal attitudes and intentions | ||
| Approval: premarital sex (1–5) | 3.04 | 1.31 |
| Approval: casual sex with friends (1–5) | 2.22 | 1.12 |
| Wants to get pregnant | .07 | |
| Previous experiences and age | ||
| Sexual debut <=14 years† | .12 | |
| Ever had sex | .74 | |
| Cumulative no. of sex partners (0–64) | 4.78 | 5.23 |
| Cumulative no. of live births (0–4) | .15 | .42 |
| Age (18–22) | 20.29 | .94 |
| Relationship context | ||
| Relationship status (ref: none or casual) | ||
| Married | .03 | |
| Engaged | .08 | |
| Special | .45 | |
| Relationship duration (0–133 weeks) | 11.62 | 17.77 |
| Friends context | ||
| Friends’ approval of sex (0–5) | 2.88 | 1.30 |
| Proportion of friends sexually active (1–5) | 4.10 | 1.13 |
| Family context and race | ||
| Parents’ approval of sex (0–5) | 1.83 | 1.35 |
| Mother <20 at first birth† | .28 | |
| Mother’s education (ref: <H.S.) † | ||
| Completed H.S. | .67 | |
| Completed college | .27 | |
| Received public assistance as a child† | .31 | |
| African American† | .27 | |
| Institutional contexts | ||
| School | ||
| Enrolled in college | .73 | |
| Religion | ||
| Highly religious† | .56 | |
| Frequency of religious attendance (0–5) † | 3.15 | 1.73 |
Note: N= 54,068 weeks (among 925 respondents)
†
Measure was assessed once at baseline and therefore does not vary within respondents over time.