Table 3 Sensitivity and specificity at baseline and during cold/warm cycle of temperature difference and the asymmetry factor
| Â | |Average fingertip temperature difference at rest.| | |Max. average fingertip temperature difference during temperature cycle.| | Asymmetry factor at rest. | Minimum Asymmetry factor during the temperature cycle. |
|---|---|---|---|---|
Sensitivity | 76% | 92% | 100% | 100% |
Specificity | 38% | 75% | 75% | 83% |
Positive predictive value | 62 | 85 | 100 | 100 |
Negative predictive value | 43 | 86 | 73 | 79 |
Cut-off points | 0.1°C | 1.4°C | 0.81 | 0.73 |
AUC 95% interval and Std.Error | 0.48 0.221–0.737(0.101) | 0.87* 0.666–1.063(0.101) | 0.90* 0.767–1,035(0.068) | 0.96** 0.879–1.038(0.40) |
Likelihood ratio positive test | 1.2 | 3.7 | 4 | 5.9 |
Likelihood negative test | 0.6 | 0.1 | 0 | 0 |
Difference in AUC | 0.39* | 0.06 | ||