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Table 4 Multiple logistic regression analysis on HBV carriage on pregnancy outcome. Result expressed in P value, relative risk (95% confidence intervals). Significant results shown in bold

From: Chronic maternal hepatitis B virus infection and pregnancy outcome- a single center study in Kunming, China

Pregnancy outcome

Model One

Model Two

Hypertensive pregnancy

0.481, 0.914 (0.713–1.173)

0.349, 0.888 (0.692–1.139)

Gestational hypertension

0.432, 0.851 (0.569–1.273)

0.466, 0.861 (0.576–1.288)

Pre-eclampsia

0.800, 0.961 (0.705–1.310)

0.554, 0.910 (0.667–1.242)

Gestational diabetes

0.090, 0.882 (0.762–1.020)

0.168, 0.902 (0.780–1.044)

Placenta previa

0.110, 0.760 (0.543–1.064)

0.068, 0.731 (0.522–1.023)

Preterm birth < 34 weeks

0.509, 0.885 (0.616–1.271)

0.274, 0.816 (0.568–1.174)

Preterm birth 34- < 37 weeks

0.508, 1.072 (0.872–1.319)

0.816, 1.025 (0.833–1.261)

Spontaneous labor

0.014, 1.231 (1.044–1.451)

0.038, 1.191 (1.010–1.405)

Large-for-age infants

0.472, 1.068 (0.893–1.277)

0.524, 1.060 (0.886–1.268)

Small-for-age infants

0.046, 0.842 (0.712–0.997)

0.032, 0.832 (0.703–0.984)

Neonatal death

0.723, 0.873 (0.410–1.855)

0.564, 0.801 (0.376–1.704)

  1. Model one – adjusting for the effects of nulliparity status, maternal age ≥ 35 years, high body mass index, previous miscarriage, abortion and cesarean section
  2. Model two – adjusting for the above factors plus tertiary eduication, and conception by assisted reproduction rtechnology