Table 2.

Positive benefit net cost for predicting ovulation within the first 24 h.

First day of test utilization	Last day of test utilization	Threshold (mIU/ml)	Positive benefit net cost	Sensitivity	Specificity
7	20	15	9	0.54	0.78
7	20	20	6	0.37	0.88
7	20	25	6	0.35	0.89
7	20	30	6	0.35	0.89
7	20	35	5	0.24	0.94
7	20	40	4	0.19	0.96