Table 5 Multiple logistic regression analysis of the independent association between rubella seronegativity with specific pregnancy outcomes.

Any obstetric complication^a

1.049 (0.982–1.120)

1.074 (0.977–1.181)

1.020 (0.931–1.116)

Gestational diabetes^a

0.947 (0.886–1.013)

0.850 (0.762–0.950)

1.014 (0.931–1.103)

Gestational hypertension^a

0.757 (0.637–0.900)

0.714 (0.567–0.899)

0.818 (0.628–1.066)

Pre-eclampsia^a

1.142 (0.987–1.321)

1.066 (0.881–1.289)

1.261 (1.005–1.582)

Preterm birth^b

1.007 (0.935–1.085)

0.874 (0.744–1.028)

0.995 (0.850–1.164)

Pregnancy > 41 weeks^b

1.411 (1.201–1.658)

1.492 (1.194–1.865)

1.323 (1.046–1.674)

Labour induction^b

1.011 (0.942–1.084)

0.964 (0.878–1.059)

1.066 (0.958–1.185)

Caesarean section^b

0.995 (0.931–1.063)

0.933 (0.852–1.022)

1.063 (0.965–1.171)

Manual removal of placenta^b

0.944 (0.848–1.052)

0.987 (0.854–1.140)

0.892 (0.759–1.049)

Postpartum haemorrhage^b

0.827 (0.703–0.973)

0.816 (0.646–1.032)

0.840 (0.670–1.053)

Infant ≥ 4000g^b

1.107 (0.908–1.267)

1.182 (0.946–1.476)

1.070 (0.904–1.266)

Apgar score < 7 at 5th min^b

1.181 (0.861–1.620)

1.053 (0.698–1.592)

1.383 (0.846–2.261)

Perinatal death^b

1.443 (0.987–2.108)

1.005 (0.574–1.760)

2.123 (1.257–3.587)

Stillbirth^b

1.144 (0.696–1.881)

0.772 (0.372–1.602)

1.779 (0.891–3.549)

Neonatal death^b

2.154 (1.190–3.899)

1.677 (0.693–4.056)

2.796 (1.243–6.291)