Table 1 Sensitivity, specificity and area under the ROC curve for the development of accelerometer cut points for wither and poll placement
Placement | Activity level | Sensitivity (%) | Specificity (%) | Area under ROC curve (95 % CI) | Cut points (cpm) |
|---|---|---|---|---|---|
Withers | Sedentary | 99.5 | 100.0 | 0.999 (0.995–1.000) | 0–47 |
Light PA | – | – | – | 48–966 | |
Moderate PA | 96.7 | 100.0 | 0.993 (0.983–0.998) | 967–2424 | |
Vigorous PA | 96.0 | 97.0 | 0.993 (0.983–0.998) | ≥2425 | |
Poll | Sedentary | 97.5 | 99.6 | 0.999 (0.993–1.000) | 0–707 |
Light PA | – | – | – | 708–1545 | |
Moderate PA | 90.33 | 79.25 | 0.922 (0.900–0.941) | 1546–2609 | |
Vigorous PA | 100 | 100 | 1.000 (0.995–1.000) | ≥2610 |