Table 3.

Sensitivity and specificity at baseline and during cold/warm cycle of temperature difference and the asymmetry factor

	|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

*Significant at the p < 0.05 level.

**Significant at the p < 0.001 level.