Table 5.
Descriptive Statistics of Change from Baseline for Primary and Secondary Outcomes by Intervention Condition.
| HIV Intervention (N=52) | General Health (N=56) | |||||
|---|---|---|---|---|---|---|
| n | Mean (SD) or % Median (IQR) |
n | Mean (SD) or % Median (IQR) |
P-value1 | Effect Size2 | |
| Change from Baseline in Proportion of Condom Use for Vaginal Sex in the Past 3 Months | ||||||
| 3 Months | 16 | 0.21 (0.39) 0 (0, 0.50) |
13 | −0.02 (0.53) 0 (−0.33, 0.33) |
0.1976 | 0.06 |
| 6 Months | 8 | 0.01 (0.35) 0 (0, 0.20) |
6 | 0.22 (0.53) 0.07 (0, 0.67) |
0.4655 | 0.04 |
| 12 Months | 5 | 0.04 (0.43) 0 (−0.20, 0) |
7 | 0.52 (0.41) 0.50 (0, 1) |
0.0833 | 0.23 |
| Change from Baseline in Number of Sexual Partners in the Past 3 Months | ||||||
| 3 Months | 32 | 0.22 (1.60) 0 (−1, 0.50) |
23 | 2.35 (10.76) 0 (−1, 1) |
0.6045 | 0.005 |
| 6 Months | 13 | −0.54 (0.97) −1 (−1, 0) |
14 | −0.57 (2.77) 0 (−1, 1) |
0.2375 | 0.05 |
| 12 Months | 11 | −0.09 (0.94) 0 (−1, 0) |
9 | −0.56 (2.92) 0 (0, 0) |
0.7307 | 0.005 |
| Sex with More than One Person in the Same Day | ||||||
| 3 Months | 38 | Yes to Yes 10.5% Yes to No 7.9% No to Yes 5.3% No to No 76.3% |
31 | Yes to Yes 22.6% Yes to No 16.1% No to Yes 3.2% No to No 58.1% |
0.3360 | 0.23 |
| 6 Months | 17 | Yes to Yes 5.9% Yes to No 11.8% No to Yes 0% |
18 | Yes to Yes 27.8% Yes to No 0% No to Yes 5.6% |
0.0832 | 0.41 |
| 12 Months | 11 | No to No 82.4% Yes to Yes 18.2% Yes to No 0% No to Yes 9.1% No to No 72.7% |
11 | No to No 51.4% Yes to Yes 18.2% Yes to No 18.2% No to Yes 9% No to No 54.6% |
0.7470 | 0.32 |
| Sex with More than One Person in the Same Month | ||||||
| 3 Months | 38 | Yes to Yes 23.7% Yes to No 7.9% No to Yes 15.8% No to No 52.6% |
31 | Yes to Yes 45.2% Yes to No 12.9% No to Yes 9.7% No to No 32.3% |
0.1851 | 0.27 |
| 6 Months | 17 | Yes to Yes 23.5% Yes to No 11.8% No to Yes 23.5% No to No 41.2% |
18 | Yes to Yes 44.4% Yes to No 5.6% No to Yes 5.6% No to No 44.4% |
0.3784 | 0.32 |
| 12 Months | 11 | Yes to Yes 18.2% Yes to No 18.2% No to Yes 18.2% No to No 45.4% |
11 | Yes to Yes 45.4% Yes to No 18.2% No to Yes 18.2% No to No 18.2% |
0.3971 | 0.34 |
| Sex While Already in a Sexual Relationship with Someone Else | ||||||
| 3 Months | 37 | Yes to Yes 8.1% Yes to No 13.5% No to Yes 10.8% No to No 67.6% |
31 | Yes to Yes 32.3% Yes to No 9.7% No to Yes 6.5% No to No 51.6% |
0.0978 | 0.31 |
| 6 Months | 17 | Yes to Yes 17.7% Yes to No 11.8% No to Yes 11.8% No to No 58.8% |
18 | Yes to Yes 33.3% Yes to No 11.1% No to Yes 5.6% No to No 50% |
0.8237 | 0.20 |
| 12 Months | 11 | Yes to Yes 9.1% Yes to No 18.2% No to Yes 18.2% No to No 54.6% |
11 | Yes to Yes 36.4% Yes to No 9% No to Yes 9% No to No 45.6% |
0.5621 | 0.34 |
| Change from Baseline in Alcohol Use Past 30 Days | ||||||
| 3 Months | 10 | 0.0 (0.47) 0.0 (0, 0) |
8 | −0.38 (0.74) −0.50 (−1, 0) |
0.1604 | 0.10 |
| 6 Months | 2 | 0.50 (0.71) 0.5 (0, 1) |
6 | −1.50 (2.17) −1 (−3, 0) |
0.2857 | 0.18 |
| 12 Months | 4 | −0.25 (0.50) 0.0 (−0.5, 0) |
5 | −1.60 (2.41) −1 (−3, 0) |
0.5000 | 0.05 |
| Change from Baseline in Marijuana Use in the Past 30 Days | ||||||
| 3 Months | 12 | 0.67 (3.28) 1 (−0.5, 2) |
15 | −1.53 (4.0) 0 (−3,0) |
0.1012 | 0.10 |
| 6 Months | 7 | −1.0 (2.94) −1 (−4, 0) |
8 | −0.88 (1.96) −0.5 (−1.5, 0.5) |
0.8014 | 0.004 |
| 12 Months | 5 | −0.4 (4.72) 0.0 (−5, 2) |
4 | −0.75 (1.71) −0.5 (−2, 0.5) |
0.9603 | <0.001 |
| Change from Baseline in Condom Use Prevention Beliefs | ||||||
| Immediate Post | 47 | 0.20 (1.15) 0.0 (−0.33, 0.67) |
48 | −0.11 (0.84) 0.0 (−0.33, 0.33) |
0.3265 | 0.01 |
| 3 Months | 38 | 0.27 (1.23) 0.0 (−0.33,0.33) |
33 | −0.09 (0.83) 0.0 (−0.67, 0.33) |
0.6942 | 0.002 |
| 6 Months | 17 | 0.43 (1.30) 0.0 (−0.33, 1) |
19 | 0.02 (0.93) 0.0 (−1, 0.67) |
0.4731 | 0.01 |
| 12 Months | 11 | 0.61 (1.39) 0 (0, 2) |
12 | 0.0 (0.94) 0.0 (−0.67, 0.33) |
0.3616 | 0.04 |
| Change from Baseline in Condom Use Attitude | ||||||
| Immediate Post | 43 | −0.09 (0.94) 0 (−0.33, 0.33) |
46 | −0.19 (0.74) 0 (−0.33, 0.33) |
0.4786 | 0.01 |
| 3 Months | 38 | −0.05 (0.8) 0 (0, 0.33) |
32 | −0.04 (0.81) 0 (−0.5, 0.5) |
0.9138 | <0.001 |
| 6 Months | 17 | −0.29 (1.06) 0 (−0.67, 0.33) |
19 | −0.26 (0.56) 0 (−0.67, 0) |
0.7820 | 0.002 |
| 12 Months | 11 | −0.39 (1.04) 0 (−1.33, 0.33) |
10 | −0.13 (0.82) 0 (−0.33, 0) |
0.8858 | 0.001 |
| Change from Baseline in Condom Use Availability | ||||||
| Immediate Post | 45 | −0.02 (0.79) 0 (−0.25, 0.5) |
46 | −0.24 (0.69) 0 (−0.75, 0.25) |
0.1581 | 0.02 |
| 3 Months | 36 | 0.03 (0.66) 0 (−0.5, 0.25) |
30 | −0.04 (0.90) 0 (−0.5, 0.5) |
0.7424 | 0.002 |
| 6 Months | 17 | 0.09 (0.84) 0 (−0.25, 0.5) |
17 | 0.06 (0.58) 0 (−0.25, 0.25) |
0.7941 | 0.002 |
| 12 Months | 11 | 0.09 (0.80) 0.5 (−0.75, 0.75) |
10 | 0 (0.71) 0 (−0.5, 0.25) |
0.6966 | 0.01 |
| Change from Baseline in Condom Use Hedonistic Beliefs | ||||||
| Immediate Post | 43 | 0.17 (0.40) 0.17 (−0.17, 0.33) |
44 | 0.10 (0.38) 0.17 (−0.08, 0.33) |
0.8408 | <0.001 |
| 3 Months | 35 | 0.04 (0.30) 0 (−0.17, 0.33) |
30 | 0.09 (0.40) 0.17 (−0.17, 0.33) |
0.5161 | 0.01 |
| 6 Months | 17 | 0.02 (0.34) 0 (−0.17, 0.33) |
18 | 0.02 (0.41) 0 (−0.17, 0.33) |
0.7395 | 0.003 |
| 12 Months | 11 | 0.02 (0.46) 0 (−0.17, 0.33) |
9 | 0.04 (0.48) 0 (−0.17, 0) |
0.7850 | 0.004 |
| Change from Baseline in Condom Use Impulsivity | ||||||
| Immediate Post | 44 | −0.19 (1.0) 0 (−0.67, 0.33) |
45 | 0.12 (0.92) 0 (−0.33, 0.33) |
0.5863 | 0.003 |
| 3 Months | 37 | −0.23 (0.91) 0 (−0.67, 0.33) |
31 | 0.08 (0.99) 0 (−0.67, 0.67) |
0.2483 | 0.02 |
| 6 Months | 17 | −0.29 (1.24) 0 (−1.0, 0.33) |
18 | 0.07 (1.21) 0 (−0.67, 1.0) |
0.5237 | 0.01 |
| 12 Months | 11 | −0.27 (1.08) −0.33 (−0.67, 0.67) |
10 | −0.27 (0.98) 0 (−0.67, 0) |
>0.9999 | <0.001 |
| Change from Baseline in Con idom Use Negotiation Beliefs | ||||||
| Immediate Post | 42 | −0.03 (0.83) 0 (−0.2, 0.2) |
45 | −0.13 (0.89) 0 (−0.4, 0.2) |
0.6874 | 0.002 |
| 3 Months | 34 | 0.16 (0.60) 0.20 (0, 0.4) |
32 | −0.11 (0.87) 0 (−0.7, 0.3) |
0.0585 | 0.05 |
| 6 Months | 17 | 0 (0.73) 0 (0, 0.4) |
18 | 0.02 (0.86) 0 (−0.4, 0) |
0.1832 | 0.05 |
| 12 Months | 11 | 0 (0.46) 0 (−0.2, 0.4) |
10 | −0.04 (0.82) 0 (−0.6, 0) |
0.3212 | 0.05 |
| Change from Baseline in Condom Use Self-Efficacy | ||||||
| Immediate Post | 41 | −0.01 (0.75) 0 (−0.33, 0.33) |
41 | −0.14 (0.66) −0.08 (−0.42, 0.17) |
0.4806 | 0.01 |
| 3 Months | 34 | 0.12 (0.55) 0.08 (−0.08, 0.42) |
29 | −0.11 (0.71) −0.08 (−0.5, 0.33) |
0.1339 | 0.04 |
| 6 Months | 17 | 0.13 (0.71) 0.33 (−0.25, 0.5) |
16 | −0.04 (0.62) −0.12 (−0.33, 0.21) |
0.2135 | 0.05 |
| 12 Months | 11 | 0.11 (0.43) 0.25 (−0.33, 0.5) |
10 | 0.02 (0.70) −0.08 (−0.33, 0.08) |
0.2171 | 0.07 |
| Change from Baseline in Condom Use Subjective Norm | ||||||
| Immediate Post | 43 | 0.03 (0.90) 0 (0, 0.5) |
47 | −0.15 (0.95) 0 (−0.5, 0.5) |
0.3225 | 0.01 |
| 3 Months | 38 | 0.20 (0.92) 0 (0, 0) |
32 | −0.09 (0.89) 0 (−0.5, 0.5) |
0.6821 | 0.002 |
| 6 Months | 17 | 0.15 (0.90) 0 (0, 0) |
19 | −0.18 (0.97) 0 (−1, 0.5) |
0.2548 | 0.04 |
| 12 Months | 11 | 0.18 (1.06) 0 (−1, 1) |
11 | 0.14 (1.38) 0.5 (−1, 1.5) |
0.9472 | <0.001 |
| Change from Baseline in Condom Use Technical Skills | ||||||
| Immediate Post | 41 | 0.0 (1.03) 0 (−0.5, 0.5) |
44 | −0.14 (0.97) 0 (−0.5, 0.5) |
0.5131 | 0.01 |
| 3 Months | 35 | 0.2 (0.81) 0 (0, 1) |
32 | −0.09 (0.89) 0.0 (−0.5, 0.5) |
0.2420 | 0.02 |
| 6 Months | 17 | 0.24 (0.79) 0.5 (0, 0.5) |
18 | −0.03 (0.88) 0 (−0.5, 0) |
0.1529 | 0.06 |
| 12 Months | 11 | 0.18 (0.51) 0 (0, 0.5) |
10 | −0.15 (0.97) 0 (−1, 0) |
0.1492 | 0.10 |
| Change from Baseline in Condom Knowledge | ||||||
| 6 Months | 17 | 0.14 (0.32) 0.2 (0, 0.20) |
18 | 0.13 (0.31) 0 (0, 0.20) |
0.6864 | 0.01 |
| 12 Months | 11 | 0.05 (0.27) 0 (−0.2, 0.20) |
12 | 0.12 (0.45) 0.20 (0, 0.20) |
0.1978 | 0.07 |
| Change from Baseline in Anger Inhibition Scale | ||||||
| Immediate Post | 45 | 0.05 (0.60) 0 (−0.25, 0.5) |
49 | 0.10 (0.49) 0.25 (−0.25, 0.5) |
0.6647 | 0.002 |
| 3 Months | 38 | −0.01 (0.68) 0 (−0.5, 0.5) |
33 | 0 (0.52) 0.0 (−0.25, 0.25) |
0.9212 | <0.001 |
| 6 Months | 17 | 0.18 (0.56) 0.25 (−0.25, 0.5) |
20 | 0.04 (0.47) 0.13 (−0.25, 0.25) |
0.4959 | 0.01 |
| 12 Months | 11 | 0.09 (0.82) −0.25 (−0.25, 0.5) |
12 | 0.10 (0.60) 0.25 (−0.25, 0.5) |
0.6834 | 0.01 |
| Change from Baseline in Anger Dysregulation Scale | ||||||
| Immediate Post | 46 | 0.04 (0.61) 0 (−0.33, 0.33) |
49 | 0.10 (0.48) 0 (0, 0.33) |
0.7143 | 0.001 |
| 3 Months | 37 | −0.08 (0.58) 0 (−0.33, 0.33) |
33 | 0.09 (0.43) 0 (0, 0.33) |
0.1064 | 0.04 |
| 6 Months | 17 | 0.02 (0.48) 0 (−0.33, 0.33) |
20 | 0.02 (0.46) 0 (−0.33, 0.33) |
0.9630 | <0.001 |
| 12 Months | 11 | 0.18 (0.92) 0 (−0.67, 0.67) |
12 | 0 (0.53) 0 (−0.33, 0.33) |
0.8771 | 0.001 |
| Change from Baseline in Anger Coping Scale | ||||||
| Immediate Post | 46 | 0.01 (0.47) 0 (−0.25, 0.25) |
49 | 0.07 (0.36) 0 (−0.25, 0.25) |
0.4386 | 0.01 |
| 3 Months | 38 | 0.07 (0.47) 0 (−0.25, 0.5) |
33 | 0.02 (0.38) 0 (−0.25, 0.25) |
0.7103 | 0.002 |
| 6 Months | 17 | 0.28 (0.4) 0.5 (0, 0.5) |
18 | 0.06 (0.48) 0.13 (−0.25, 0.25) |
0.1458 | 0.06 |
| 12 Months | 11 | −0.16 (0.39) −0.25 (−0.5, 0.25) |
12 | 0.06 (0.37) 0 (−0.25, 0.38) |
0.1148 | 0.11 |
| Change from Baseline in Sadness Inhibition Scale | ||||||
| Immediate Post | 44 | −0.02 (0.57) 0 (−0.25, 0.25) |
44 | 0.08 (0.60) 0 (−0.25, 0.38) |
0.3965 | 0.01 |
| 3 Months | 38 | 0.11 (0.64) 0 (−0.25, 0.5) |
33 | −0.03 (0.48) 0 (−0.25, 0.25) |
0.4629 | 0.01 |
| 6 Months | 17 | 0.07 (0.65) 0 (−0.25, 0.25) |
19 | −0.01 (0.52) 0 (−0.5, 0.25) |
0.7722 | 0.002 |
| 12 Months | 11 | 0.09 (0.63) 0 (−0.5, 0.5) |
12 | 0.17 (0.75) 0.13 (−0.5, 0.88) |
0.8039 | 0.003 |
| Change from Baseline in Sadness Dysregulation Scale | ||||||
| Immediate Post | 44 | 0.17 (0.54) 0 (−0.33, 0.33) |
44 | 0.27 (0.65) 0.33 (0, 0.67) |
0.1913 | 0.02 |
| 3 Months | 37 | 0.17 (0.51) 0 (0, 0.33) |
33 | 0.14 (0.53) 0 (0, 0.67) |
0.9855 | <0.001 |
| 6 Months | 17 | 0.16 (0.5) 0 (−0.33, 0.67) |
18 | 0.15 (0.51) 0 (0, 0.67) |
0.8646 | 0.001 |
| 12 Months | 11 | 0.55 (0.65) 0.67 (0, 1) |
12 | 0.11 (0.64) 0 (0, 0.5) |
0.2304 | 0.06 |
| Change from Baseline in Sadness Coping Scale | ||||||
| Immediate Post | 44 | 0.06 (0.52) 0 (−0.2, 0.4) |
42 | 0 (0.51) 0 (−0.2, 0.4) |
0.6859 | 0.002 |
| 3 Months | 37 | 0.08 (0.56) 0 (−0.2, 0.4) |
32 | 0 (0.42) 0 (−0.2, 0.4) |
0.6020 | 0.004 |
| 6 Months | 17 | 0.32 (0.58) 0.20 (−0.2, 0.8) |
17 | 0.02 (0.48) −0.2 (−0.4, 0.6) |
0.2254 | 0.04 |
| 12 Months | 11 | −0.02 (0.68) −0.2 (−0.6, 0.4) |
12 | 0.17 (0.67) 0 (−0.4, 0.7) |
0.5578 | 0.02 |
| Change from Baseline in Pro-Black Ethnic Identity Score | ||||||
| Immediate Post | 45 | 0.13 (0.39) 0 (0, 0.29) |
47 | 0.11 (0.48) 0.14 (0, 0.43) |
0.4412 | 0.01 |
| 3 Months | 38 | 0.10 (0.36) 0 (−0.14, 0.29) |
32 | 0.04 (0.37) 0 (−0.14, 0.14) |
0.6182 | 0.004 |
| 6 Months | 16 | 0.11 (0.43) 0.14 (−0.07, 0.36) |
20 | 0.14 (0.38) 0 (0, 0.29) |
0.9356 | <0.001 |
| 12 Months | 11 | 0.14 (0.34) 0.14 (−0.14, 0.29) |
12 | 0.23 (0.32) 0.14 (0, 0.43) |
0.6874 | 0.01 |
| Change from Baseline in Anti-White Ethnic Identity Score | ||||||
| Immediate Post | 44 | −0.07 (0.56) 0 (−0.25, 0.25) |
44 | −0.06 (0.51) 0 (−0.38, 0.25) |
0.8953 | <0.001 |
| 3 Months | 36 | 0 (0.48) 0 (−0.25, 0.25) |
27 | 0.03 (0.49) 0 (−0.25, 0.25) |
0.8935 | <0.001 |
| 6 Months | 15 | −0.25 (0.64) 0 (−.05 0.25) |
17 | 0.04 (0.48) −0.25 (−0.25, 0.25) |
0.3480 | 0.03 |
| 12 Months | 11 | −0.05 (0.6) 0 (−0.5, 0.5) |
11 | 0.02 (0.43) 0 (−0.25, 0.25) |
0.8155 | 0.002 |
| Change from Baseline in Racism Awareness Ethnic Identity Score | ||||||
| Immediate Post | 42 | 0.07 (0.45) 0 (−0.2, 0.4) |
43 | 0.01 (0.55) 0 (−0.2, 0.4) |
0.9612 | <0.001 |
| 3 Months | 35 | 0.17 (0.5) 0.2 (−0.2, 0.4) |
31 | 0.19 (0.58) 0 (−0.2, 0.4) |
0.6888 | 0.002 |
| 6 Months | 16 | −0.05 (0.51) 0 (−0.4, 0.2) |
19 | 0.29 (0.6) 0.2 (0, 0.6) |
0.1096 | 0.07 |
| 12 Months | 11 | 0.02 (0.53) 0 (−0.4, 0.4) |
12 | 0.07 (0.42) −0.1 (−0.2, 0.4) |
0.9015 | 0.001 |
| Change from Baseline in Attitudes Toward Women Score | ||||||
| Immediate Post | 40 | 1 (0.64) 1 (0.67, 1.46) |
41 | 0.86 (0.83) 0.75 (0.25, 1.25) |
0.1536 | 0.03 |
| 3 Months | 34 | 0.01 (0.29) 0 (−0.17, 0.25) |
27 | 0 (0.25) −0.08 (−0.17, 0.17) |
0.6104 | 0.004 |
| 6 Months | 15 | 0.07 (0.36) 0.17 (−0.17, 0.42) |
14 | −0.04 (0.27) −0.08 (−0.25, 0.17) |
0.4187 | 0.02 |
| 12 Months | 10 | 0.17 (0.42) 0.17 (0, 0.33) |
11 | −0.04 (0.32) 0 (−0.25, 0.17) |
0.2730 | 0.06 |
| Change from Baseline in HIV/STD Knowledge Scale Score | ||||||
| Immediate Post | 45 | 0 (0.3) 0.06 (−0.17, 0.19) |
45 | −0.14 (0.26) −0.13 (−0.3, −0.02) |
0.0011 | 0.12 |
| 3 Months | 35 | 0.06 (0.16) 0.07 (−0.07, 0.14) |
30 | −0.05 (0.31) 0 (−0.29, 0.21) |
0.2478 | 0.02 |
| 6 Months | 17 | 0.07 (0.24) 0.14 (0, 0.21) |
18 | 0.06 (0.24) 0.04 (−0.07, 0.21) |
0.4455 | 0.02 |
| 12 Months | 11 | 0.06 (0.16) 0.07 (0, 0.21) |
12 | 0.09 (0.31) 0.14 (0.04, 0.21) |
0.3534 | 0.04 |
| Change from Baseline in PHQ-9 Score | ||||||
| Immediate Post | 47 | −1.06 (2.03) −1 (−2, 0) |
51 | 0.10 (2.45) 0 (−1, 2) |
0.0070 | 0.07 |
| 3 Months | 38 | −0.37 (2.52) 0 (−2, 0) |
33 | 1.42 (4.93) 0 (0, 2) |
0.0480 | 0.06 |
| 6 Months | 17 | −1.06 (3.77) −2 (−3, 0) |
22 | 0 (3.53) 0 (−2, 1) |
0.1582 | 0.05 |
| 12 Months | 11 | −0.27 (4.45) −2 (−3, 1) |
13 | 0.08 (3.20) 0 (−1, 1) |
0.4305 | 0.03 |
Note: SD=standard deviation; IQR=interquartile range
P-values are based on non-parametric exact Wilcoxon rank-sum tests for continuous variables and Fisher’s exact tests for categorical variables
Effect sizes are based on η2 (eta-squared) for continuous variables (small: 0.01, medium: 0.06, large: >0.14) and Cramer’s V for categorical variables (small: 0.10-0.29, medium: 0.30-0.50, large: >0.50).