Table 11

Evaluation of different combinations of the three clinical signs of pudendal canal syndrome

Test: All Three Clinical Signs

SE

SP

PPV

NPV

OR

95%IC(OR)

Nb of Cases Before

Nb of Controls

All positive vs. All negative

0,68

0,89

0,60

0,92

16,97

4,68 – 61,51

19

53

At least 2 positive vs. At least 2 negative

0,66

0,82

0,47

0,90

8,53

3,40 – 21,39

32

82

At least 1 positive vs. All negative

0,81

0,57

0,32

0,92

5,82

2,16 – 15,66

32

82

SE = sensibility, SP = specificity, PPV = positive predictive value, NPV = negative predictive value, OR = odd ratio, 95%IC (OR) = 95 % confidence interval of the odd ratio. PPV and NPV for a prevalence of 20 %.

Beco et al. BMC Surgery 2004 4:15   doi:10.1186/1471-2482-4-15