Diagnostic accuracy of sensory and motor tests for the diagnosis of carpal tunnel syndrome: a systematic review

Table 5 Diagnostic Accuracy of Vibrometry for CTS diagnosis

Study (Authors, year)	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)	+LR	-LR
Borg & Lindblom 1988 [20]	52	NR	NR	NR	NR	NR
Buch-Jaeger & Foucher 1994 [21]	26	77	60	44	1.13*	0.96*
Franzblau et al. 1993 [22]	RS#1 3	RS#1 91	RS#1 6	RS#1 84	RS#1 0.33*	RS#1 1.06*
	RS#2 5	RS#2 92	RS#2 10	RS#2 85	RS#2 0.62*	RS#2 1.03*
	RS#3 11	RS#3 93	RS#3 21	RS#3 86	RS#3 1.57*	RS#3 0.95*
MacDermid et al. 1997 [26]	Tester 1 = 77 Tester 2 = 77	Tester 1 = 80 Tester 2 = 72	NR	NR	Tester 1 = 3.85* Tester 2 = 2.75*	Tester 1 = 0.28* Tester 2 = 0.31*

PPV Positive Predictive Value, NPV Negative Predictive Value, +LR Positive Likelihood Ratio, −LR Negative Likelihood Ratio, CI confidence interval, NR not reported, RS reference standard
In Franzblau et al. ‘s study, the first reference standard was electrodiagnosis, the second reference standard was electrodiagnosis and symptoms consistent with CTS, and the third reference standard was physical examination findings and symptoms consistent with CTS;
* values calculated by the authors of this study

ISSN: 1471-2474