Table 2 Changes in willingness, self-efficacy, and knowledge from baseline to follow-up within and across intervention groups
|  | PREVENT Intervention (n = 23) | Control (n = 27) |  | ||||
|---|---|---|---|---|---|---|---|
Baselinea | Follow-upa | Within group differenceb | Baselinea | Follow-upa | Within group differenceb | Across group differencec | |
Willingness to change physical activity | 2.23 (0.92) | 3.78 (1.00) | 1.55 (0.93, 2.17)** | 1.89 (1.12) | 3.80 (1.11) | 1.91 (1.25, 2.57)** | −0.36 |
 missing | 1 | 5 |  | 0 | 7 |  |  |
Willingness to change food intake | 2.55 (1.01) | 3.78 (0.94) | 1.23 (0.61, 1.86)** | 2.30 (0.99) | 3.85 (1.04) | 1.55 (0.95, 2.16)** | 0.64 |
 missing | 1 | 5 |  | 0 | 7 |  |  |
Self-efficacy (physical activity) | 3.58 (0.60) | 4.05 (0.53) | 0.47 (0.03, 0.91)* | 3.48 (0.78) | 3.42 (0.95) | −0.06 (− 0.72, 0.59) | 0.53 |
 missing | 0 | 13 |  | 0 | 15 |  |  |
Self-efficacy (food intake) | 3.66 (0.78) | 4.16 (0.43) | 0.50 (0.06, 0.93)* | 3.68 (0.81) | 3.50 (0.82) | −0.18 (−0.77, 0.41) | 0.68 |
 missing | 0 | 13 |  | 0 | 15 |  |  |
Understand risk for poor heart health | 4.0 (0.67) | 3.94 (0.64) | −0.06 (−0.47, 0.36) | 4.11 (0.80) | 4.25 (0.72) | 0.14 (−0.31, 0.59) | 0.87 |
 missing | 0 | 5 |  | 0 | 7 |  |  |
Understand steps to improve heart health | 3.96 (0.77) | 4.00 (0.69) | 0.04 (−0.42, 0.50) | 4.00 (0.96) | 4.05 (1.00) | 0.05 (−0.54, 0.64) | 0.76 |
 missing | 0 | 5 |  | 0 | 7 |  |  |
Awareness of resources | 3.96 (0.77) | 3.78 (0.94) | −0.18 (−0.74, 0.38) | 3.67 (1.30) | 3.60 (1.14) | −0.07 (− 0.79, 0.65) | 0.83 |
 missing | 0 | 5 |  | 0 | 7 |  |  |