Table 2 Accelerometer wear time estimates using data from vertical axis only and from vector magnitude assessment, Women's Health Study, 2011-2013
Assessment method: | Women with ≥1 valid day | Women with ≥4 valid days | Number of valid days | Wear-time on valid days (min) | ||||
|---|---|---|---|---|---|---|---|---|
| Â | N (%) | N (%) | Median (IQR) | Median (IQR) | ||||
| Â | Vertical | Vector magnitude | Vertical | Vector magnitude | Vertical | Vector magnitude | Vertical | Vector magnitude |
Detailed-log | 6834 (89.3) | 6834 (89.3) | 6741 (88.1) | 6741 (88.1) | 7 (7, 7) | 7 (7, 7) | 898.0 (850.7, 937.4) | 898.0 (850.7, 937.4) |
Troiano [5] | 7435(97.2) | 7458 (97.5) | 7202 (94.1) | 7312 (95.6) | 7 (7, 8) | 8 (7, 9) | 838.3 (786.8, 886.7) | 860.0 (812.5, 904.0) |
7485 (97.8) | 7494 (98.0) | 7360 (96.2) | 7378 (96.4) | 9 (8, 9) | 9 (8, 10) | 875.7 (832.3, 917.0) | 887.0 (845.2, 928.2) | |
Limited-log + Troiano | 7383 (96.5) | 7391 (96.6) | 7110 (96.9) | 7188 (94.0) | 7, (6, 7) | 7 (7, 7) | 842.3 (788.7, 890.9) | 866.8 (813.3, 912.3) |
Limited-log + Choi | 7396(96.7) | 7396 (96.7) | 7247(94.7) | 7258 (94.9) | 7 (7, 7) | 7 (7, 7) | 890.4 (841.6, 933.6) | 896.4 (848.4, 939.5) |