(n = 70 per group) | Group 1 | Group 2 | Group 3 | P | |||
---|---|---|---|---|---|---|---|
 | (18-30 years) | (31-36 years) | (37-40 years) |  | |||
Female age (years) | 25.7 ± 3.5 | [24.8-26.5] | 33.4 ± 1.6 | [33.0-33.8] | 38.2 ± 1.1 | [38.0-38.5] | <0.01 |
Postpartum AMH (ng/ml) | 0.9 | [0.7-1.1] | 0.7 | [0.6-0.9] | 0.3 | [0.2-0.4] | <0.001 |
Delivery to AMH draw (days) | 3.4 ± 2.3 | [2.8-3.9] | 3.6 ± 2.3 | [3.1-4.2] | 3.1 ± 1.6 | [2.8-3.5] | n.s. |
Delivery to resumption of menses (months) | 3.4 | [2.6-4.4] | 4.5 | [3.7-5.3] | 5.3 | [3.9-6.8] | <0.05 |
Gestational age at delivery | 37.9 ± 3.2 | [37.2-38.7] | 38.0 ± 2.9 | [37.3-38.7] | 38.1 ± 3.6 | [37.2-38.9] | n.s. |