Table 4.
Sensitivity to Change as Indicated by Significant Increase Over Time and Group-by-Time Interactions
| T1 (Baseline) | T2 (Post) | T3 (Follow-up) | Fa | Fa | Fa Group- | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis | Group | n | M | (SD) | M | (SD) | M | (SD) | Time | Group | by-Time |
| WHP1 | |||||||||||
| T1-T2 | E | 43 | 75.8 | (18.7) | 86.8 | (14.1) | 12.7 *** | 5.9 ** | 7.4 ** | ||
| C | 32 | 70.5 | (22.2) | 71.9 | (22.8) | (1/73) | (1/73) | (1/73) | |||
| T1-T3 | E | 35 | 76.9 | (18.4) | 86.4 | (16.9) | 7.8 ** | 4.4 * | 4.8 * | ||
| C | 31 | 71.3 | (22.8) | 72.4 | (23.9) | (1/64) | (1/64) | (1/64) | |||
| T1-T2-T3 | E | 35 | 76.9 | (18.4) | 86.9 | (14.5) | 86.3 | (16.9) | 5.0 ** | 4.6 * | 3.9 * |
| C | 25 | 73.2 | (21.3) | 73.2 | (20.8) | 75.3 | (22.1) | (2/57) | (1/58) | (2/57) | |
|
| |||||||||||
| WHP2 | |||||||||||
| T1-T2 | E | 49 | 74.7 | (20.2) | 84.0 | (14.0) | 17.4 *** | 3.5 * | 6.6 ** | ||
| C | 48 | 70.4 | (24.8) | 72.6 | (26.1) | (1/95) | (1/95) | (1/95) | |||
| T1-T3 | E | 50 | 72.4 | (19.5) | 83.6 | (12.4) | 31.3 *** | 1.5 | 5.7 ** | ||
| C | 40 | 71.0 | (23.6) | 75.4 | (23.4) | (1/88) | (1/88) | (1/88) | |||
| T1-T2-T3 | E | 41 | 73.7 | (19.7) | 84.6 | (13.8) | 85.0 | (12.9) | 14.0 *** | 3.8 * | 4.5 ** |
| C | 36 | 70.5 | (24.1) | 72.2 | (24.8) | 74.8 | (24.5) | (2/74) | (1/75) | (2/74) | |
|
| |||||||||||
| HIP | |||||||||||
| T1-T2 | E | 115 | 67.0 | (19.8) | 80.5 | (16.1) | 84.3 *** | 2.9 * | 62.6 *** | ||
| C | 210 | 69.9 | (17.8) | 70.9 | (18.6) | (1/323) | (1/323) | (1/323) | |||
Notes. Means are presented as percentage of correct answers; WHP1 = Women’s Health Project-1 (Carey et al., 1997); WHP2 = Women’s Health Project-2 (Carey et al., 2000); HIP = Health Improvement Project (Carey et al., 2002); groups are coded as E = experimental group (i.e., received education about HIV and would be expected to improve knowledge over time), C = control group; T1 = baseline; T2 = post-intervention; T3 = follow-up.
a
Numbers in parentheses refer to hypotheses and error degrees of freedom.
*
p < .05,
**
p < .01,
***
p < .001 (one-tailed).