Table 1.
Comparability Between Study Conditions at Baselinea
| Characteristic | Experimental (n = 342) | Comparison (n = 359) | P Value |
|---|---|---|---|
| Sociodemographic | |||
| Age, mean (SD), y | 17.55 (1.62) | 17.73 (1.72) | .15 |
| Graduated high school, No. (%) | 123 (36.0) | 151 (42.1) | .11 |
| Family aid index, mean (SD) | 0.88 (1.00) | 0.79 (0.96) | .16 |
| Poor neighborhood quality, mean (SD) | 0.68 (1.00) | 0.64 (1.00) | .59 |
| Employed, No. (%) | 119 (34.8) | 136 (37.9) | .40 |
| Relationship | |||
| Current boyfriend, No. (%) | 276 (80.7) | 281 (78.3) | .43 |
| Current relationship duration, mean (SD), mo | 14.24 (14.96) | 14.54 (4.83) | .81 |
| Perceived partner concurrency, No. (%) | 74 (28.9) | 65 (25.5) | .39 |
| Likert scale score of general age of sex partners, mean (SD)b | 3.78 (0.80) | 3.75 (0.77) | .56 |
| Psychosocial mediator, mean (SD) | |||
| Condom use self-efficacy | 16.90 (6.86) | 16.64 (7.10) | .63 |
| Communication self-efficacy | 20.61 (3.52) | 20.52 (3.62) | .75 |
| Communication frequency | 11.56 (4.23) | 12.26 (4.37) | .03 |
| Refusal self-efficacy | 24.61 (3.27) | 24.52 (3.52) | .70 |
| Fear of condom negotiation | 8.29 (3.62) | 8.23 (2.80) | .79 |
| Sexual behavior | |||
| Condom use, mean (SD), % | |||
| Past 90 d | 47.66 (37) | 48.37 (37) | .81 |
| Past 6 mo | 48.45 (36) | 49.22 (35) | .77 |
| Consistent condom use, No. (%) | |||
| Past 90 d | 55 (16.9) | 58 (17.1) | .95 |
| Past 6 mo | 36 (10.5) | 43 (12.0) | .54 |
| Positive result for sexually transmitted infection, No. (%) | |||
| Chlamydial | 66 (19.3) | 54 (15.0) | .14 |
| Gonococcal | 18 (5.3) | 26 (7.2) | .28 |
| Other factor | |||
| Douching, No. (%) | 151 (44.2) | 147 (40.9) | .39 |
| Depression, mean (SD) | 14.56 (6.30) | 15.15 (6.69) | .22 |
| Sexual adventurism, mean (SD) | 19.23 (4.35) | 19.25 (4.29) | .94 |
| Impulsivity, mean (SD) | 38.83 (7.86) | 38.60 (7.42) | .69 |
| History of abuse, No. (%) | |||
| Emotional | 198 (57.9) | 194 (54.0) | .30 |
| Physical | 137 (40.1) | 139 (38.7) | .72 |
| Tried, No. (%) | |||
| Alcohol | 271 (79.2) | 275 (76.6) | .40 |
| Marijuana | 244 (71.3) | 265 (73.8) | .46 |
a
All items have been successfully used by the study team in prior human immunodeficiency virus trials,13 and full-scale descriptions and corresponding assessment questions are available on request.
b
Participants reported the general age of their sex partners using a Likert scale from 1, indicating much younger than the participant (≥4 years younger), to 5, indicating much older than the participant (≥4 years older).