Table 2.
Multivariate Analyses Predicting Adult Sexual Risk Behavior from Age Difference at First Intercourse (Linear and Logistic Regression)
| |
Linear regression models |
Logistic regression models |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| No. of partners, lifetime (log) β (95% CI) | No. of partners, 3 months (log) β (95% CI) | No. of episodes unprotected sex (log) β (95% CI) | No. of episodes unprotected sex, steady (log)aβ (95% CI) | No. of episodes unprotected sex, non-steady (log)bβ (95% CI) | Proportion episodes unprotected sex β (95% CI) | Proportion episodes unprotected sex, steadyaβ (95% CI) | Proportion episodes unprotected sex, non-steadybβ (95% CI) | STD diagnosis, ever OR (95% CI) | Partner concurrencyaOR (95% CI) | |
| Education | 0.14* (0.02-0.27) | |||||||||
| Employment | 0.13* (0.03, 0.24) | |||||||||
| Income | 0.08 (−0.02, 0.19) | 0.17** (0.06, 0.29) | ||||||||
| Race | −0.09 (−0.20, 0.01) | 0.19*** (0.09, 0.40) | ||||||||
| Current age | 0.34*** (0.24, 0.44) | 0.12* (0.01, 0.24) | 0.22* (0.05, 0.37) | 1.07** (1.02, 1.13) | 1.03 (1.00, 1.07) | |||||
| Age at first sex | −0.28*** (−0.39, −0.18) | 0.11 (−0.004, 0.23) | 0.01 (−0.11, 0.13) | 0.03 (−0.10, 0.16) | −0.16 (−0.34, −0.01) | 0.07 (−0.05, 0.20) | 0.04 (−0.09, 0.17) | −0.09 (−0.27, 0.08) | 0.88 (0.72, 1.06) | 0.84* (0.72, 0.97) |
| Age difference at first sex | 0.04 (−0.07, 0.14) | 0.06 (−0.06, 0.18) | 0.10 (−0.02, 0.22) | 0.13* (0.003, 0.26) | −0.03 (−0.19, 0.14) | 0.11 (−0.01, 0.23) | 0.14* (0.01, 0.27) | 0.03 (−0.13, 0.20) | 1.03 (0.92, 1.16) | 1.08 (1.00, 1.18) |
a
Only participants who reported a steady partner, past 3 months.
b
Only participants who reported nonsteady partner(s), past 3 months.
*
p < 0.05; **p < 0.01; ***p < 0.001.
CI, confidence interval; No., number; OR, odds ratio.