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Table 3 The association between nutritional status and nutrient supplementation and adverse pregnancy outcomes

From: High starchy food intake may increase the risk of adverse pregnancy outcomes: a nested case-control study in the Shaanxi province of Northwestern China

  Total Overall adverse pregnancy outcomes
N (%) N (%) OR(95%CI) OR(95%CI)a
Pre-pregnancy BMI
 emaciation 44 (14.9) 6 (13.6) 0.735 (0.289,1.873) 0.699 (0.247,1.982)
 normal 198 (66.2) 35 (17.7) 1.000 1.000
 overweight or obesity 57 (19.01) 22 (38.6) 2.927 (1.534,5.587)* 2.412 (1.143,5.089)*
Nutrient supplement before pregnancy
 short term and small dose 205 (69.0) 43 (21.0) 1.150 (0.314, 4.219) 0.815 (0.173,3.836)
 short term but large dose 12 (4.0) 2 (16.7) 0.867 (0.121, 6.215) 1.402 (0.160,12.25)
 long term but small dose 64 (21.6) 14 (21.9) 1.213 (0.303, 4.863) 1.049 (0.206,5.351)
 long term and large dose 16 (5.4) 3 (18.8) 1.000 1.000
Nutrient supplement of first trimester
 short term and small dose 57 (19.4) 18 (31.6) 2.885 (1.262,6.593)* 2.557 (0.810,8.068)
 short term but large dose 37 (12.6) 6 (16.2) 1.210 (0.417, 3.511) 1.496 (0.480,4.664)
 long term but small dose 113 (38.5) 25 (22.1) 1.776 (0.835, 3.774) 2.009 (0.672,6.006)
 long term and large dose 87 (29.6) 12 (13.8) 1.000 1.000
Types of nutrients
 pure folic acid 164 (56.3) 40 (24.4) 1.618 (0.904, 2.933) 1.092 (0.417,2.863)
 multivitamin with folic acid 127 (43.7) 21 (16.5) 1.000 1.000
  1. a Multivariate analysis and adjustment of age and residence, economic situation, smoking and alcohol intake
  2. * p < 0.05