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Table 4 Multivariate logistic analyses showing the outcomes associated with term low birth weight

From: Association between maternal lifestyle factors and low birth weight in preterm and term births: a case-control study

Variable   Reference P Crude OR Adjusted ORa 95%CI
Passive smoking Yes No 0.019 1.356 1.404 1.057–1.864
Gestational gain Less Normal 0.009 1.659 1.484 1.103–1.998
More   < 0.001 0.431 0.369 0.236–0.577
Economic status (Ұ/month) 3001–5000 ≤3000 0.032 0.669 0.715 0.526–0.971
5001–7000   0.104 0.576 0.687 0.437–1.080
> 7000   0.026 0.391 0.526 0.299–0.926
Pre-pregnancy BMI < 18.5 18.5–23.9 < 0.001 2.008 1.718 1.278–2.310
24–27.9   0.826 0.965 1.065 0.607–1.868
≥28   0.569 1.079 1.409 0.433–4.579
Parity >1 1 < 0.001 0.535 0.506 0.368–0.695
History of LBW Yes No < 0.001 3.728 4.087 2.070–8.069
Antenatal care 5–9 ≤4 0.344 0.664 0.808 0.519–1.257
10–14   0.014 0.425 0.557 0.349–0.889
≥15   0.024 0.222 0.305 0.108–0.858
Gestational hypertension Yes No < 0.001 4.600 6.598 3.915–11.122
  1. note: OR odds ratio; CI confidence interval; LBW low birth weight; BMI body mass index; Control normal weight term baby
  2. aVariables in the logistic regression include maternal characteristics, pre-pregnancy BMI, parity, history of LBW, antenatal care, fetal sex, and gestational hypertension