Table 2

Association between infections and adverse obstetric outcomes

 Spontaneous preterm birthSmall for gestational ageStillbirth
NUnivariate ORMultivariate OR*NUnivariate ORMultivariate OR†NUnivariate ORMultivariate OR‡
No infections10 4331.001.0041 5381.001.0021581.001.00
Chlamydia only1291.34 (1.16 to 1.56)1.17 (1.01 to 1.37)4711.15 (1.04 to 1.26)0.99 (0.89 to 1.09)361.66 (1.19 to 2.31)1.40 (1.00 to 1.96)
Gonorrhoea only103.04 (1.71 to 5.44)2.50 (1.39 to 4.50)161.22 (0.72 to 2.07)0.98 (0.58 to 1.68)<52.87 (0.71 to 11.65)2.35 (0.58 to 9.56)
Chlamydia and gonorrhoea only<50.87 (0.21 to 3.56)0.52 (0.12 to 2.16)152.68 (1.48 to 4.83)1.67 (0.91 to 3.04)<52.90 (0.40 to 20.98)1.93 (0.26 to 14.00)
Other notifiable infections1971.86 (1.64 to 2.10)1.62 (1.44 to 1.84)7301.66 (1.53 to 1.80)1.00 (0.90 to 1.12)37.001.49 (1.08 to 2.07)1.28 (0.92 to 1.77)
  • *Adjusted for age, socioeconomic status, Aboriginality, region of residence, country of birth, smoking, hypertension, diabetes, late antenatal booking.

  • †Adjusted for age, socioeconomic status, Aboriginality, country of birth, smoking, hypertension, diabetes, late antenatal booking.

  • ‡Adjusted for age, socioeconomic status, Aboriginality, region of residence, smoking, hypertension, diabetes, late antenatal booking.