Table 2.
Step counts, recorded using pedometer and activPAL
| Pedometer | activPAL | |||||
| Intervention | Control | Intervention | Control | |||
| Number of participants providing data, number of outliers removed and mean (SD) daily average step counts | ||||||
| Baseline | N Participants | 20 | 21 | 19b | 18b | |
| N Outliersa | 8 | 11 | 0 | 0 | ||
| Mean (SD) | 6743 (2282) | 5671 (1900) | 7469 (2312) | 7351 (2360) | ||
| Week 12 | N Participants | 20 | 19 | 20 | 19 | |
| N Outliers | 3 | 14 | 0 | 2 | ||
| Mean (SD) | 7347 (1766) | 5935 (2226) | 9351 (2017) | 7138 (2169) | ||
| Week 24 | N Participants | 20 | 17 | 19b | 17 | |
| N Outliers | 11 | 5 | 0 | 0 | ||
| Mean (SD) | 7543 (2804) | 7683 (2824) | 9161 (2631) | 9100 (3175) | ||
| Within-group changesc | ||||||
| W12– BL | Estimate | 604 | 266 | 1907 | –213 | |
| (95% CI) | (–320, 1528) | (–672, 1205) | (1070, 2743) | (–1104, 679) | ||
| P-value | P = 0.20 | P = 0.57 | P < 0.001 | P = 0.64 | ||
| W24 – W12 | Estimate | 196 | 1672 | –206 | 1908 | |
| (95% CI) | (–867, 1260) | 538, 2806) | (–1100, 688) | (972, 2844) | ||
| P-value | P = 0.71 | P = 0.004 | P = 0.65 | P < 0.001 | ||
| Between-group difference (Intervention – Control)c | ||||||
| W12 – BL | Estimate | 338 | 2119 | |||
| (95% CI) | (–979, 1654) | (897, 3342) | ||||
| P-value | P = 0.61 | P = 0.001 | ||||
| W24 – W12 | Estimate | –1476 | –2114 | |||
| (95% CI) | (-3030, 79) | (–3408, –820) | ||||
| P-value | P = 0.062 | P = 0.002 | ||||
a Any daily step count <1000 steps was assumed to be due to a device malfunction or failure to wear the device for the whole day. Such values were excluded from the calculation of daily average step counts.
bData processing errors resulted in loss of activPAL data for four participants (one intervention, three controls) at baseline and for one participant (intervention) at week 24.
c Models not adjusted for baseline covariates.