Table 4.

Area under the curve of the receiver operating characteristics curve, sensitivity and specificity for the SmartPill colonic transit time and whole gut transit time, and day 5 radiopaque markers.

Parameter	Area under the curve (95% CI)		Cutoff value	Sensitivity	Specificity
Colonic transit time	0.73 (0.65–0.82)	All subjects	59 h	0.46	0.95
		Men	44 h	0.50	0.90
		Women	59 h	0.46	0.92
Whole gut transit time	0.76 (0.68–0.84)	All subjects	73 h	0.42	0.95
		Men	52 h	0.63	0.90
		Women	73 h	0.41	0.92
Day 5 radiopaque marker	0.71 (0.63–0.78)	All subjects	>5 markers	0.37	0.95

Adapted from Rao et al. [2009]. CI, confidence interval.