Table 2a. Change in Weekly Frequency of Mild, Moderate, and Vigorous Leisure-Time Physical Activity for All Participants, From Baseline to 3 Months, by Intervention Arm.
| Leisure-Time Physical Activity | Delayed Intervention (n = 154) | Immediate Intervention (n = 166) | P c | ||||
|---|---|---|---|---|---|---|---|
|
| |||||||
| Baseline (n = 143)a | 3 Months (n = 143)a | Δb | Baseline (n = 159) | 3 Months (n = 159) | Δb | ||
|
| |||||||
| Mean (SE) | |||||||
| Vigorous | 0.59 (0.1) | 0.72 (0.1) | −0.13 (0.2) | 0.35 (0.1) | 0.96 (0.2) | −0.56 (0.2) | .09 |
| Moderate | 1.27 (0.2) | 1.76 (0.2) | −0.41 (0.2) | 1.39 (0.2) | 2.13 (0.2) | −0.74 (0.2) | .13 |
| Mild | 3.16 (0.2) | 3.67 (0.2) | −0.45 (0.3) | 3.43 (0.2) | 3.59 (0.2) | −0.11 (0.2) | .72 |
| Total | 5.03 (0.4) | 6.14 (0.4) | −0.99 (0.5) | 5.16 (0.3) | 6.69 (0.4) | −1.4 (0.4) | .29 |
Abbreviations: SE, standard error.
a
Differences in totals are due to missing data.
b
Δ: mean (SE) is the difference in times per week of leisure-time physical activity from baseline to 3-month measures. A negative value indicates an increase in frequency of exercise.
c
Alternative hypothesis states that the change from baseline to 3-month follow-up in the delayed intervention is greater than the change from baseline to 3-month follow-up in the immediate intervention. Categorical data were analyzed by using Pearson’s χ2 or Fisher’s exact test. All tests were 1-sided.