Table 4  Comparisons of correlation coefficients between all ovarian response groups.

	Correlation coefficients	Comparison of hypo- and normo-responders	Comparison of hypo- and hyper-responders	Comparison of normo- and hyper-responders
Values are shown as Spearmanʼs correlation coefficient (r) and Fisherʼs Z-values. AFC: antral follicle count. * p-value is statistically significant (p < 0.05).
Hypo-responders AFC < 7 (n = 66, 25.7%)	r = 0,852* Z = 1.26	Z = 0.277 p > 0.01	Z = − 1.001 p > 0.01	Z = − 1.425 p > 0.01
Normo-responders AFC 7 – 19 (n = 98, 38.1%)	r = 0,836* Z = 1.21
Hyper-responders AFC > 19 (n = 93, 36.2%)	r = 0,899* Z = 1.47