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Table 3 Multivariable logistic regression analysis of obstetric outcomes and age for main confounding factors (obesity, use of ART, smoking, chronic hypertension, previous c-section and parity)

From: Impact of aging on obstetric outcomes: defining advanced maternal age in Barcelona

  GD (aOR 95% CI) PE (aOR 95% CI) Late-onset PE (aOR 95% CI) PP (aOR 95% CI) c-section (aOR 95% CI) Elective c-section (aOR 95% CI) Emergency c-section (aOR 95% CI)
< 30 - Ref group - 1 1 1 1 1 1 1
30–34 1.47 (1.21–1.80) 0.91 (0.62–1.34) 1.01 (0.65–1.56) 1.52 (0.86–2.67) 1.20 (1.06–1.33) 1.29 (1.09–1.53) 1.01 (0.95–1.24)
35–39 2.07 (1.70–2.52) 1.03 (0.71–1.51) 1.06 (0.68–1.64) 1.58 (0.90–2.77) 1.49 (1.33–1.66) 1.82 (1.54–2.15) 1.15 (1.01–1.31)
40–44 3.18 (2.56–3.95) 1.12 (0.71–1.77) 1.18 (0.70–1.99) 2.54 (1.40–4.63) 2.46 (2.15–2.82) 3.17 (2.63–3.82) 1.38 (1.18–1.61)
≥45 3.25 (2.21–4.78) 1.75 (0.83–3.68) 1.28 (0.50–3.30) 3.80 (1.70–8.50) 7.80 (5.79–10.50) 8.09 (5.99–10.92) 2.03 (1.50–2.74)
  1. Ref reference. aOR adjusted odds ratio. CI confidence interval. GD gestational diabetes controlled for obesity, smoking, parity and use of ART. PE preeclampsia, controlled for chronic hypertension, use of ART, smoking, parity and obesity. PP placenta previa, controlled for previous caesarea, parity, smoking and use of ART. C-section caesarian section, controlled for previous caesarian section, parity, smoking and obesity