Table 4.
Daily time in each Physical Activity intensity level (%) by different sets of cut points.
| Activity intensity | Hip reference | Johansson wrist | ROCa analysis | OLRb model | K-means analysis | |||||
|
|
Mean (SD) | % | Mean (SD) | % | Mean (SD) | % | Mean (SD) | % | Mean (SD) | % |
| Sedentary behavior | 148.07 (32.15) | 57.8c | 194.81 (41.58) | 63.9 | 157.95 (37.88) | 58.5c | 208.61 (33.65) | 76.1 | 138.13 (37.63) | 51.6c |
| Light physical activity | 83.13 (25.71) | 30.4d | 100.84 (39.53) | 34.6d | 47.47 (12.97) | 16.7 | 60.11 (26.45) | 21.2 | 89.25 (23.68) | 31.3d |
| Moderate physical activity | 19.27 (10.95) | 7.1 | N/A | N/A | 9.20 (3.44) | 3.3 | 3.73 (2.18) | 1.3 | 41.46 (19.87) | 14.7 |
| Vigorous physical activity | 13.24 (20.74) | 4.7e | N/A | N/A | 60.84 (28.09) | 21.5 | 3.82 (2.88) | 1.4 | 6.74 (4.42) | 2.4e |
| Moderate-to-vigorous physical activity | 32.61 (30.78) | 11.8 | 4.35 (3.16) | 1.5 | 70.98 (61.63) | 24.8 | 7.62 (4.77) | 2.7 | 48.87 (23.47) | 17.1 |
aROC: Receiver operating characteristic.
bOLR: Ordinal logistic regression.
c Indicates there is no statistical difference in PA estimate between the ML method and the hip-based reference for the Sedentary behavior intensity level.
d Indicates there is no statistical difference in PA estimate between the ML method and the hip-based reference for the Sedentary behavior intensity level.
e Indicates there is no statistical difference in PA estimate between the ML method and the hip-based reference for the Sedentary behavior intensity level.