(c)  

Testing sites	AUC	Optimal threshold	Specificity			Sensitivity
			Median	95% CI		Median	95% CI
Left and right obdurator internus	0.932	10	0.8968	0.8643	0.9292	0.8407	0.7699	0.9027
Left and right puborectalis	0.955	6	0.8703	0.8357	0.9049	0.9262	0.8770	0.9672
Left and right Iliococcygeus	0.948	6	0.8407	0.7994	0.8791	0.9292	0.8761	0.9735

*Significantly different from best pair. The best pair or best examination site in each region is marked in bold.