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Table 2 Median and (IQR 25–75 %) for AMH (ng/ml) variable by age categories in PCOS and normo-ovulatory

From: Age-specific cut-off levels of anti-Müllerian hormone can be used as diagnostic markers for polycystic ovary syndrome

Age categorya

Normo-ovulatory

(n = 500)

PCOS

(n = 303)

p-value

20 to < 27

 N = 30

 N = 134

< 0.001

3.6 (2.60–4.85)

7.4 (4.70–10.12)

27 to < 35

 N = 284

 N = 151

< 0.001

2.03 (1.23–3.02)

5.16 (2.97–8.00)

35 to 40

 N = 186

 N = 18

< 0.001

0.97 (0.48–1.68)

4.72 (1.89–7.60)

  1. aAge categories were determined using the generalized additive models (GAMs)