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.

< 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