The performance of classifying wear and non-wear events: mean and 95% CIs
| Method | CR (95% CI) | Sensitivity (95% CI) | Specificity (95% CI) | PPV (95% CI) | NPV (95% CI) |
|---|---|---|---|---|---|
| The proposed CTA method | 0.95 (0.92 to 0.97) | 0.94 (0.90 to 0.98) | 0.91 (0.88 to 0.95) | 0.82 (0.76 to 0.88) | 0.95 (0.89 to 1.00) |
| The temperature alone | 0.75 (0.67 to 0.82) | 0.93 (0.90 to 0.98) | 0.64 (0.59 to 0.69) | 0.53 (0.36 to 0.69) | 0. 95 (0.89 to 1.00) |
| The acceleration alone | 0.80 (0.71 to 0.90) | 0.76 (0.64 to 0.89) | 0.89 (0.84 to 0.94) | 0. 75 (0.67 to 0.83) | 0.74 (0.60 to 0.89) |
CR, classification rate; CTA, combining temperature and acceleration; NPV, negative predictive value; PPV, positive predictive value.