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Table 5 Haemoglobin dilution and risks of SGA and Non-SGA in term stillbirth

From: Maternal haemoglobin concentrations before and during pregnancy and stillbirth risk: a population-based case-control study

 

SGA stillbirth

Non-SGA stillbirth

Cases (n = 55)

Controls (n = 215)

Odds ratioa (95 % CI)b

Cases (n = 75)

Controls (n = 1,858)

Odds ratioa (95 % CI)b

n (%)

n (%)

n (%)

n (%)

Haemoglobin dilution during second trimester of pregnancy (g/l)

  > 0.78

12 (26.4)

66 (34.0)

0.48 (0.19–1.22)

20 (26.7)

639 (34.4)

0.62 (0.34–1.11)

 0.78–0.01

18 (25.5)

67 (33.3)

1.01 (0.43–2.39)

26 (34.7)

621 (33.4)

0.87 (0.50–1.52)

 0.00 ≤

25 (48.1)

82 (32.6)

Reference

29 (38.7)

598 (32.2)

Reference

 Continuous

55 (100)

215 (100)

0.59 (0.36–0.97)

75 (100)

1,858 (100)

0.95 (0.68–1.33)

  1. aAdjusted for: maternal age, maternal height, maternal BMI, parity, gestational age at first haemoglobin measurement, history of smoking, husband’s profession, and region
  2. bOR denotes Odds ratios and CI denotes confidence intervals