Study Details

Citation

Rotz, Dana et al. Interim Impacts of the Teen PEP Program. Mathematica Policy Research, Cambridge, MA: 2015.

Rotz, Dana, Brian Goesling, Molly Crofton, Jennifer Manlove, and Kate Welti. “Final Impacts of Teen PEP in New Jersey and North Carolina High Schools.” Cambridge, MA: Mathematica Policy Research, September 2016.

Program or Component Study?
Program
Program or Component Name

Teen PEP

Show Evidence of Effectiveness
No
Study Rating and Explanation
Moderate —

Random assignment study with high attrition that that did not meet the criteria for a high rating but met all criteria for a moderate rating; findings show no positive, statistically significant impact on a relevant behavioral outcome measure for either the full sample or key subgroups

Program Information

Program Type
Sexual health education
Program Length
Fewer than 10 sessions

Evaluation Setting

Evaluation Setting
In school: High school

Study Sample

Average Age Group
14 to 17
Majority Racial/Ethnic Group
White
Sex
Male and female youth

Research Design

Assignment Method
Cluster randomized controlled trial
Sample Size

942

Number of Follow-Ups

2

Length of Last Follow-Up

18

Year of Last Data Collection
2014
Reviewed Studies
Moderate-Quality Randomized Trial
Protocol Version
Version 5.0
Effect Sizes
{"0": {"ProgramName":"Teen PEP","StudyID":"PPRER014025","ManuscriptID":"PPRER014025","Rating":"Moderate","OutcomeName":"Had sexual intercourse without a condom in 3 months prior to survey","OutcomeDomain":"Contraceptive Use","OutcomeDichotomous":"Yes","SampleType":"Full sample","FUTimingMonths":"6","FUReference":"End of Program","MeanTreat":"0.23","MeanComp":"0.22","TpperES":"0.024","StatSigRepEffect":"No","RepEffectFavorable":"Not significant","RepEffectMeet":"No"},"1": {"ProgramName":"Teen PEP","StudyID":"PPRER014025","ManuscriptID":"PPRER014025","Rating":"Moderate","OutcomeName":"Had sexual intercourse without any effective method of birth control in 3 months prior to survey","OutcomeDomain":"Contraceptive Use","OutcomeDichotomous":"Yes","SampleType":"Full sample","FUTimingMonths":"6","FUReference":"End of Program","MeanTreat":"0.19","MeanComp":"0.15","TpperES":"0.171","StatSigRepEffect":"No","RepEffectFavorable":"Not significant","RepEffectMeet":"No"},"2": {"ProgramName":"Teen PEP","StudyID":"PPRER014025","ManuscriptID":"PPRER014025","Rating":"Moderate","OutcomeName":"Number of sexual partners","OutcomeDomain":"Number of Sexual Partners","OutcomeDichotomous":"No","SampleType":"Full sample","FUTimingMonths":"6","FUReference":"End of Program","MeanTreat":"0.88","MeanComp":"0.81","TpperES":"NA","StatSigRepEffect":"No","RepEffectFavorable":"Not significant","RepEffectMeet":"No"},"3": {"ProgramName":"Teen PEP","StudyID":"PPRER014025","ManuscriptID":"PPRER014025","Rating":"Moderate","OutcomeName":"Ever had sexual intercourse","OutcomeDomain":"Sexual Activity","OutcomeDichotomous":"Yes","SampleType":"Full sample","FUTimingMonths":"6","FUReference":"End of Program","MeanTreat":"0.44","MeanComp":"0.37","TpperES":"0.174","StatSigRepEffect":"No","RepEffectFavorable":"Not significant","RepEffectMeet":"No"},"4": {"ProgramName":"Teen PEP","StudyID":"PPRER014025","ManuscriptID":"PPRER014025","Rating":"Moderate","OutcomeName":"Had sexual intercourse in 3 months prior to survey","OutcomeDomain":"Sexual Activity","OutcomeDichotomous":"Yes","SampleType":"Full sample","FUTimingMonths":"6","FUReference":"End of Program","MeanTreat":"0.32","MeanComp":"0.30","TpperES":"0.051","StatSigRepEffect":"No","RepEffectFavorable":"Not significant","RepEffectMeet":"No"}}

NA = Not available. This means the authors did not report the information in the manuscripts associated with the studies we reviewed.

a This information was not available whenever authors did not report information for the treatment and comparison groups separately on outcome means, standard deviations, and/or sample sizes.

b Authors reported that the program effect (impact) estimate is statistically significant with a p-value of less than 0.05 based on a two-tailed test.

c For some outcomes, having less of that outcome is favorable. In those cases, an effect with a negative sign is favorable to the treatment group (that is, the treatment group had a more favorable outcome than the comparison group, on average).

d An effect shows credibly estimated, statistically significant evidence whenever it has a p-value of less than 0.05 based on a two-tailed test, includes the appropriate adjustment for clustering (if applicable), and it is not based on an endogenous subgroup.

Language directly from the program model developer or authors.