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Table 2 Obstetric outcomes of women diagnosed with gestational diabetes mellitus

From: Pregnancy outcomes in women with gestational diabetes mellitus diagnosed according to the WHO-2013 and WHO-1999 diagnostic criteria: a multicentre retrospective cohort study

  Cohort    
Outcome variable WHO-2013 WHO-1999 P-value* OR** Adjusted OR**
N 437 949    
Induction of labour, n (%) 256 (59.3) 606 (63.9) 0.102 0.82 (0.65–1.04) 0.76 (0.59–0.98)
Delivery type, n (%)      
 Spontaneous vaginal delivery 318 (73.1) 638 (67.4) 0.032 1.32 (1.02–1.70) 1.52 (1.15–2.01)
 Assisted vaginal delivery 35 (8.0) 79 (8.3) 0.712 0.93 (0.61–1.40) NA
 Intrapartum caesarean delivery 48 (11.0) 121 (12.8) 0.365 0.85 (0.60–1.21) NA
 Planned caesarean delivery 34 (7.8) 111 (11.7) 0.029 0.64 (0.43–0.96) NA
Gestational age at birth (weeks) 39.0 [38.3–39.6] 38.3 [38.0–39.0] < 0.001 NA NA
Pregnancy-induced hypertension, n (%) 50 (11.5) 61 (6.4) 0.001 1.89 (1.28–2.80) 1.71 (1.11–2.63)
Preeclampsia, n (%) 12 (2.8) 30 (3.2) 0.683 0.87 (0.44–1.71) NA
  1. Abbreviations: WHO World health Organization, OR odds ratios, NA not applicable. Data are expressed as mean ± SD, or proportion of n (%)
  2. *P-values were based on Student’s unpaired t-test (non-skewed continuous variables), or chi-square test (categorical variables)
  3. **OR, 95% confidence intervals were derived from logistic regression models using the WHO-1999 group as reference group. Multivariable adjustment included maternal age, pre-gestational body mass index, ethnicity and parity. When the statistical power of a variable was not sufficient or the outcome variable was continuous ‘NA’ was reported