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Table 1 Baseline characteristics of 438 pregnant women evaluated according to eNOS genotype

From: Endothelial nitric oxide synthase gene polymorphism (Glu298Asp) and development of pre-eclampsia: a case-control study and a meta-analysis

Characteristics Glu/Glu (n = 258) Glu/Asp (n = 149) Asp/Asp (n = 31) P value*
Age in years, median (IQR) 30 (24–34) 30 (26–34) 30 (22–34) 0.36
Primiparous, n (%) 135 (52) 76 (51) 20 (65) 0.38
BMI, kg/m2; median(IQR) 25.1(22.3–28.8) 25.2 (17.3–29.4) 25.9 (23.6–28.8) 0.89
Smokers, n (%) 18 (7) 15 (10) 3 (10) 0.47
Mean pulsatility index median (IQR) 1.1 (0.96–1.54) 1.1 (0.9–1.36) 0.85 (0.6–1.11) 0.68
  1. * Comparisons between the three genotype-groups for continuous variables by ANOVA test and for categorical variables by χ2test
  2. IQR= interquartile ranges
  3. Glu/Glu= Glutamic acid/Glutamic acid
  4. Glu/Asp = Glutamic/Aspartate
  5. Asp/Asp = Aspartate/Aspartate
  6. BMI = body mass index