Table 4.

Accuracy and diagnostic validity of the neuropathic pain questionnaires

	NPQ-SF	DN4	S-LANSS
Area Under Curve	0.82 (0.75-0.89)	0.89 (0.83-0.95)	0.83 (0.75-0.90)
Cutoff point	≥0	≥4	≥12
Sensitivity	77%	89%	74%
Specificity	79%	77%	83%
PPV	92%	92%	93%
NPV	54%	69%	51%
Cohen’s Kappa	0.48 (0.41-0.58)	0.64 (0.41-0.66)	0.47 (0.33-0.58)

PPV=Positive predictive value, NPV=Negative predictive value