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Table 1 Baseline characteristics and IVF-ET data of the women in the different AMH and age groups

From: Serum anti-Müllerian hormone levels are associated with early miscarriage in the IVF/ICSI fresh cycle

Characteristics Age < 35 y (n = 1531) Age ≥ 35 y (n = 715)
Low AMH (n = 324) Medium AMH (n = 746) High AMH (n = 461) P- value Low AMH (n = 272) Medium AMH (n = 343) High AMH (n = 100) P- value
Age (years) 31 (20–34) a 31 (20–34) b 30 (20–34) c  < 0.0001 37 (35–46) a 37 (35–46) b 36 (35–42) c  < 0.0001
AMH (ng/ml) 1.10 (0.06–1.60) a 2.70 (1.61–3.98) b 5.22 (3.99–16.21) c  < 0.0001 1.05 (0.02–1.60) a 2.50 (1.61–3.91) b 5.00 (4.00–14.30) c  < 0.0001
BMI (kg/m2) 22.6 (20.7–25.4) a, b 22.3 (16.0–33.3) b 22.8 (15.6–36.1) a 0.007 23.0 (16.0–33.2) 23.0 (16.5–35.8) 23.0 (17.2–33.9) 0.931
Previous conception [% (n/N)] 24.4 (79/324) 24.1 (180/746) 23.2 (107/461) 0.912 44.5 (121/272) 47.2 (162/343) 45.0 (45/100) 0.780
Duration of infertility (years) 4 (1–14) 4 (1–12) 4 (1–14) 0.636 4 (1–20) 4 (1–17) 5 (1–16) 0.377
Primary infertility [% (n/N)] 62.0 (201/324) 60.9 (454/746) 62.3 (287/461) 0.869 39.0 (106/272) 35.6 (122/343) 42.0 (42/100) 0.441
Main diagnosis      < 0.0001      < 0.0001
Ovulation disorder 6.2 (20/324) a 7.5 (56/746) a 26.5 (122/461) b   2.6 (7/272) a 7.6 (26/343) b 19.0 (19/100) c  
Tubal factor 42.3 (137/324) a, b 48.1 (359/746) b 37.7 (174/461) a   41.5 (113/272) 41.4 (142/343) 46.0 (46/100)  
Male factor 17.3 (56/324) a 23.3 (174/746) a, b 24.5 (113/461) b   15.8 (43/272) 18.1 (62/343) 17.0 (17/100)  
Endometriosis 15.7 (51/324) a 10.7 (80/746) a 5.2 (24/461) b   12.9 (35/272) 10.8 (37/343) 7.0 (7/100)  
Unexplained 18.5 (60/324) a 10.3 (77/746) b 6.1 (28/461) c   27.2 (74/272) a 22.2 (76/343) a 11.0 (11/100) b  
Internal medicine diseases 8.6 (28/324) 7.6 (57/746) 6.1 (28/461) 0.372 4.8 (13/272) 8.5 (29/343) 6.0 (6/100) 0.186
  1. AMH anti-Müllerian hormone, BMI body mass index
  2. Continuous data are shown as the median (range) and were analysed using the Kruskal–Wallis test
  3. Categorial variables are shown as percentages (number) and were analysed using the chi-square test
  4. The superscripts including the same letter indicate that there was no significant difference among the women with different AMH levels