TABLE 1.
Imputed Means and Probabilities of Adolescent Sexual Behaviors Over 30 Months by Intervention Condition
| Imputed Mean or Probability (95% CI) | Adjusted Effect Sizea (95% CI) | ||
|---|---|---|---|
| ER (n = 222) | HP (n = 198) | ||
| Full sample | |||
| No. vaginal or anal sex actsb | 3.12 (1.55 to 4.69) | 5.77 (2.51 to 9.03) | ARR = 0.39 (0.20 to 0.77)* |
| No. condomless vaginal or anal sex actsb | 1.28 (0.34 to 2.22) | 3.46 (0.91 to 6.01) | ARR = 0.36 (0.14 to 0.90)* |
| Any sexual risk behaviorc | 0.21 (0.16 to 0.26) | 0.29 (0.23 to 0.35) | aOR = 0.52 (0.32 to 0.84)* |
| Any multiple partners (2+ in 6-mo period) | 0.13 (0.09 to 0.17) | 0.18 (0.12 to 0.24) | aOR = 0.54 (0.30 to 0.99)* |
| Any condomless vaginal or anal sex | 0.15 (0.10 to 0.20) | 0.15 (0.10 to 0.20) | aOR = 0.81 (0.45 to 1.45) |
| Any substance use before sex | 0.13 (0.09 to 0.17) | 0.20 (0.14 to 0.26) | aOR = 0.42 (0.23 to 0.75)* |
| Among sexually actived | |||
| No. vaginal or anal sex actsb,e | 10.67 (2.87 to 18.47) | 14.04 (6.61 to 21.47) | ARR = 0.57 (0.32 to 0.99)* |
| No. condomless vaginal or anal sex actsb,e | 5.71 (−1.32 to 12.74) | 8.66 (2.49 to 14.83) | ARR = 0.53 (0.24 to 1.17) |
| Any sexual risk behaviorc | 0.50 (0.40 to 0.60) | 0.58 (0.48 to 0.68) | aOR = 0.66 (0.39 to 1.13) |
| Any multiple partners (2+ in 6-mo period) | 0.30 (0.21 to 0.39) | 0.36 (0.26 to 0.46) | aOR = 0.70 (0.38 to 1.30) |
| Any condomless vaginal or anal sex | 0.36 (0.26 to 0.46) | 0.30 (0.21 to 0.39) | aOR = 1.08 (0.59 to 1.97) |
| Any substance use before sex | 0.30 (0.21 to 0.39) | 0.40 (0.30 to 0.50) | aOR = 0.52 (0.28 to 0.95)* |
Imputed means and probabilities estimates result is from 50 multiple imputations generated by using chained equations. CI, confidence interval.
a
aOR; ARR.
b
Behavioral counts converted into yearly rates.
c
“Any sexual risk behavior” defined by composite measure containing any multiple partners (in a 6-mo period), any condomless vaginal or anal sex, or any substance use in the 4 h before sex during the 30 mo study period.
d
Those who reported vaginal or anal sex at baseline or at any follow-up.
e
Behavioral counts from the assessment of vaginal or anal debut until the end of the 30 mo follow-up.
*
P < .05.