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Table 4 Univariate and Multivariate Analysis of Risk Factors associated with Placenta Previa

From: Adverse effects of endometriosis on pregnancy: a case-control study

Factors Crude OR (95% CI) Multi-adjusted OR (95% CI)
Endometriosis 3.38 (1.70–6.74) 3.19 (1.56–6.50)
Pre-pregnancy BMI ≥25 (kg/m2) 0.62 (0.31–1.23) 0.65 (0.32–1.30)
Maternal age at delivery ≥35 (years) 1.18 (0.82–1.71) 0.92 (0.62–1.36)
ART 2.55 (1.67–3.89) 2.71 (1.70–4.31)
Multipara 1.16 (0.80–1.67) 1.46 (0.99–2.15)
  1. The multivariate analysis was adjusted for each confounding factor including endometriosis, pre-pregnancy BMI ≥25, maternal age at delivery ≥35, ART and multipara by itself. BMI Body Mass Index, ART Assisted Reproductive Technology, OR Odds Ratio, CI Confidence Interval