Table 2.
Paired‐samples t tests (normally distributed data) or Wilcoxon Signed Rank tests (nonnormally distributed data) results comparing measures collected by ActiGraphs worn at the wrist and the waist and correlations between the 2 locations (n = 46)
| Variable | Wrist, Mean (SD) | Waist, Mean (SD) | Mean Difference, Mean (SD) | 95% CI or z Statistic (P Value) | Correlation Between Wrist and Waist (P Value) |
|---|---|---|---|---|---|
| Average steps per day | 9236 (3812) | 5324 (2800) | 3912 (1834) | −5.9 (<0.001)c | 0.89 (<0.001)c |
| Average activity counts per day | 872,590 (349,148) | 186,491 (101,989) | 686,099 (282,404) | 602,235 to 769,963 (<0.001)c |
0.74 (<0.001)c |
| Average % time sedentarya | 38 (13) | 70 (11%) | −33 (9) | −35 to −30 (<0.001)c |
0.75 (<0.001)c |
| Average % time in light physical activitya | 51 (9) | 28 (10) | 24 (9) | 21 to 26 (<0.001)c |
0.57 (<0.001)c |
| Average % time in moderate‐vigorous physical activitya | 11 (8) | 2 (2) | 9 (7) | −5.9 (<0.001)c |
0.49 (0.001)c |
| Average % time spent walking <1.04 m/sb | 71 (11) | 95 (3) | −24 (10) | −5.9 (<0.001)c |
0.58 (<0.001)c |
| Average % time spent walking 1.05‐1.30 m/sb | 29 (11) | 4 (2) | 25 (10) | 22 to 28 (<0.001)c |
0.56 (<0.001)c |
| Average % time spent walking >1.31 m/sb | 0 (0) | 1 (2) | −1 (2) | N/A | N/A |