TABLE 2—
Number and Proportion of Evaluations of Office of Adolescent Health Teen Pregnancy Prevention Programs: United States, 2010–2015
| Characteristic | Evaluations, % (No.) |
| Evaluation design | |
| Randomized cluster | 54 (22) |
| Randomized youths | 37 (15) |
| Quasi-experimental | 10 (4) |
| Setting | |
| During school | 39 (16) |
| Community-based | 20 (8) |
| Multiple settings | 20 (8) |
| After school | 10 (4) |
| Clinic | 7 (3) |
| Online | 5 (2) |
| Target population | |
| High school only | 29 (12) |
| Middle school only | 29 (12) |
| High school or older | 24 (10) |
| Middle and high school | 17 (7) |
| Outcomes measured | |
| Condom/contraceptive use | 39 (33) |
| Abstinence/sexual activity | 36 (30) |
| Frequency of sex | 10 (8) |
| Pregnancy | 10 (8) |
| Number of sexual partners | 4 (3) |
| STI rates | 2 (2) |
Note. STI = sexually transmitted infection.