Table 2.

Sensitivity and specificity for the optimal cut-offs determined by ROC curves for colonic transit GC >3.34 and fecal weight >400g/48h for primary BAs and total fecal BAs, primary BAs alone, and secretory BAs.

	Sensitivity	Specificity
Fecal weight > 400g/48h
Primary BA >4% + total fecal BA >1,000 μmol/48h	46%	97%
Primary BA > 10%	49%	91%
Secretory BA > 77.5%	5%	96%
Colonic Transit 24 hrs, GC > 3.34
Primary BA >4% + total fecal BA >1,000 μmol/48h	36%	90%
Primary BA > 10%	48%	87%
Secretory BA > 77.5%	9%	98%