Table 1.
Physical activity over time stratified by treatment arm
| Assessment Periods | p-values | |||||||
|---|---|---|---|---|---|---|---|---|
| Treatment Group | Baseline Mean ± Std dev Median (IQR) |
BL – 4 mo changea | BL – 1 year changea | BL – 2 year changea | Treatment Group | Time | Treatment Group x Time | |
| Daily Steps | Control | 8866 ± 3146 8267 (6674, 10,872) |
342 (−42, 727) |
−135 (−537, 268) |
−179 (−635, 277) |
0.7434 | 0.0118* | 0.2976 |
| Small Change | 8450 ± 2997 8032 (6337, 9933) |
139 (−253, 531) |
221 (−198, 641) |
−71 (−534, 392) |
||||
| Large Change | 8622 ± 3051 8383 (6366, 10,513) |
260 (−138, 658) |
−258 (−668, 153) |
−205 (−668, 259) |
||||
| Bout-related MVPA (min/week) | Control | 260.4 ± 254.7 177.6 (88.0, 352.3) |
54.5 (20.1, 89.0) |
12.2 (−26.4, 50.8) |
20.8 (−26.7, 68.3) |
0.6604 | 0.0442* | 0.1569 |
| Small Change | 253.4 ± 246.6 180.0 (85.8, 329.0) |
37.8 (2.8, 72.8) |
43.9 (3.8, 84.1) |
24.0 (−23.8, 71.8) |
||||
| Large Change | 276.5 ± 237.8 211.4 (84.0, 400.0) |
66.5 (30.8, 102.1) |
11.2 (−28.0, 50.4) |
63.6 (15.4111.7) |
||||
| Weight (kg) | Control | 71.4 ± 10.2 70.7 (63.6, 78.1) |
−0.8 (−1.2, −0.3) |
−0.4 (−1.0, 0.3) |
0.7 (0.0, 1.4) |
<0.0001** | <0.0001** | 0.0160* |
| Small Change | 71.9 ± 11.0 70.0 (63.6, 79.5) |
−1.6 (−2.0, −1.1) |
−1.4 (−2.0,-0.7) |
−1.0 (−1.8, −0.3) |
||||
| Large Change | 70.8 ± 11.0 69.2 (63.4, 76.4) |
−3.5 (−3.9, −3.0) |
−2.5 (−3.1, −1.9) |
−1.6 (−2.3, −0.8) |
||||
aLeast Square Means (95% confidence interval); Steps and MVPA models adjust for clinic, gender, race, armband wear time, and baseline value of outcome measure. Weight model adjusts for clinic, gender, race, and baseline weight. Adjusted change values are presented. Boldface indicates statistical significance (*p < 0.05, **p < 0.001)