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Table 2 Pregnancy outcomes

From: Autoimmune disorders but not heparin are associated with cell-free fetal DNA test failure

  Cases n = 58 (%) Controls n = 295 (%) p-value
Complications of pregnancy
 Pre-eclampsia 8 (13.8) 3 (1.0) < 0.001
 IUGR < 5th percentile 6 (10.3) 8 (2.7) < 0.001
 Fetal death 2 (3.4) 0  
 Othera 11 (19.0) 78 (26.4) 0.3
Infant
 Weeks of gestation at birth 37.2 (36.6–40) 38 (38.4–40.4) 0.36
 Weight (in grams) 2856 (2423–3566) 3139 (2900–3552) 0.02
 Size 48.9 (47.3–52) 48.9 (48–50) 0.96
 Fetal malformation 2 (3.4) 4 (1.4) 0.26
  1. aIncludes any other complication that occurred during the pregnancy (diabetes, premature rupture of membranes…)