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Table 7 Multivariate analysis on pregnancy complications and pregnancy outcomes

From: Evaluation of risk factors’ importance on adverse pregnancy and neonatal outcomes in women aged 40 years or older

  Birthweighta Gestational agea Hypertensionb Diabetesb (Pre)eclampsialb Unhealty childb Survivalb
  B (95% CI) B (95% CI) OR (95% CI) OR (95% CI) OR (95% CI) OR (95% CI) OR (95% CI)
Age when giving birth
 ≤ 39 Reference Reference Reference Reference Reference Reference Reference
 40–44 −38.44 (−46.36 - -30.53) −0.12 (− 0.15 - -0.10) 1.58 (1.39–1.79) 1.97 (1.79–2.18) 1.52 (1.40–1.64) 1.22 (1.18–1.26) 1.62 (1.20–2.19)
 45 −97.49 (−123.94 - -71.05) −0.39 (− 0.47 - -0.30) 2.00 (1.43–2.80) 2.90 (2.27–3.70) 2.49 (2.05–3.02) 1.43 (1.29–1.59) 2.28 (1.05–4.93)
Civil status
 Single status at registration −85.60 (−99.15 - -72.06) −0.09 (− 0.14 - -0.05) 0.72 (0.57–0.92) 1.03 (0.87–1-22) 1.02 (0.89–1.16) 1.13 (1.07–1.20) 1.32 (0.81–2.12)
 Married/cohabiting Reference Reference Reference Reference Reference Reference Reference
ART
 Yes −31.26 (−48.89 - -13.63) −0.20 (−0.26 - -0.14) 1.12 (0.89–1.42) 1.11 (0.90–1.37) 1.53 (1.34–1.75) 1.46 (1.36–1.56) 1.63 (0.94–2.82)
 No Reference Reference Reference Reference Reference Reference Reference
Parity
 Primiparous Reference Reference Reference Reference Reference Reference Reference
 Multiparous 158.85 (149.87–167.84) −0.06 (−0.10 - -0.04) 0.50 (0.44–0.57) 1.22 (1.07–1.40) 0.42 (0.38–0.45) 0.70 (0.67–0.72) 1.16 (0.80–1.70)
Twin
 No Reference Reference Reference Reference Reference Reference Reference
 Yes −3.88 (−3.97- -3.80) −3.09 (−3.15- -3.03) 1.48 (1.14–1.92) 1.042 (0.80–1.31) 4.93 (4.40–5.53) 4.89 (4.57–5.24) 8.67 (6.10–12.32)
Mother’s BMI (registration)
 Normal Reference Reference Reference Reference Reference Reference Reference
 Underweight − 232.52 (− 262.07 - -202.97) −0.34 (−0.43 - −0.24) 0.60 (0.28–1.26) 0.92 (0.49–1.74) 0.71 (0.47–1.08) 1.09 (0.96–1.24)
 Overweight 81.97 (73.57–90.37) 0.03 (−0.02–0.03) 1.66 (1.44–1.91) 2.21 (1.94–2.52) 1.61 (1.48–1.76) 1.21 (1.17–1.26) 1.25 (0.90–1.74)
 Obese 129.14 (118.47–139.80) -0-11 (− 0.14 - -0.07) 2.89 (2.49–3.36) 7.18 (6.37–8.10) 2.88 (2.62–3.17) 1.66 (1.59–1.73) 1.50 (1.02–2.22)
  1. aLinear regression, adjusted for all variables in Table 5
  2. bLogistic regression, adjusted for all variables in Table 5