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Table 2 Comparison of adverse pregnancy outcomes between the group of high level and normal group of inhibin-A level

From: A cohort study of the association between maternal serum Inhibin-A and adverse pregnancy outcomes: a population-based study

  Normal IHA (N = 4600) High IHA (> 2.0 MoM) (N = 205) Relative Risk (95% CI) P value Low IHA (> 2.0 MoM) (N = 275) Relative Risk (95% CI) P value
Preterm birth 381 (8.3%) 25 (12.2%) 1.51 (1.01–2.26) 0.049 19 (6.9%) 0.83 (0.53–1.31) 0.420
Spontaneous preterm birth 324 (7.0%) 11 (5.4%) 0.76 (0.42–1.37) 0.356 15 (5.5%) 0.77 (0.46–1.28) 0.314
Preeclampsia 92 (2.0%) 15 (7.3%) 3.47 (2.13–5.65) <  0.001 7 (2.5%) 1.26 (0.61–2.60) 0.533
FGR 153 (3.3%) 21 (10.2%) 3.04 (1. 99–4.65) <  0.001 12 (4.4%) 1.30 (0.75–2.27) 0.355
Low birth weight 437 (9.5%) 31 (15.1%) 1.65 (1.14–2.39) 0.008 24 (8.7%) 0.92 (0.61–1.38) 0.671
Antepartum hemorrhage 25 (0.5%) 3 (1.5%) 2.53 (0.86–7.44) 0.091 1 (0.4%) 0.68 (0.10–4.66) 0.690
Postpartum hemorrhage 78 (1.7%) 5 (2.4%) 1.42 (0.60–3.35) 0.427 1 (0.4%) 0.22 (0.03–1.55) 0.089
Low APGAR scores 36 (0.8%) 2 (1.0%) 1.01 (0.94–1.09) 0.760 3 (1.1%) 1.02 (0.93–1.12) 0.577
Route of delivery     0.401    0.175
 Normal delivery 2659 (57.9%) 116 (56.6%)    174 (63.3%)   
 Cesarean delivery 1692 (36.8%) 74 (36.1%)    90 (32.7%)   
 Vacuum extraction 226 (4.9%) 13 (6.3%)    9 (3.3%)   
 Forceps extraction 16 (0.3%) 2 (1.0%)    2 (0.7%)   
  1. IHA Inhibin-A, FGR fetal growth restriction;