Table 4.

Sensitivity, specificity, positive predictive value (PPV) for positive test results and proportion of patients (accuracy) with a correct prediction at different cut off levels for the total antral follicle count (AFC) for the prediction of 'poor'response in IVF.

Total AFC	Sensitivity	Specificity	PPV	Accuracy
< 4	0.21	0.99	0.86	0.78
< 5	0.28	0.99	0.89	0.80
< 6	0.41	0.95	0.75	0.89
< 7	0.69	0.80	0.56	0.77
< 8	0.76	0.74	0.51	0.75