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Table 4 Logistic regression analysis: Variables influencing full breastfeeding at 4 months

From: Initiation of breastfeeding within 120 minutes after birth is associated with breastfeeding at four months among Japanese women: A self-administered questionnaire survey

Factor Comparison Odds Ratio 95%CI p value
Model 1 (≤ 30 minutes vs > 30 minutes)
Time to first breastfeed ≤ 30 minutes vs > 30 minutes 1.82 0.97, 3.43 0.06
Mother's age ≥ 30 years vs < 30 years 0.62 0.34, 1.11 0.11
Baby's gender Female vs male 2.16 1.24, 3.77 <0.01
Parity Multiparous vs primiparous 1.36 0.76, 2.43 0.40
Gestational age ≥ 37 weeks vs ≤ 36 weeks 1.36 0.36, 5.24 0.65
Method of delivery Non Caesarean section vs Caesarean section 1.29 0.53, 3.12 0.57
Bleeding at delivery < 500 ml vs ≥ 500 ml 1.29 0.62, 2.67 0.50
Early skin-to-skin contact Non contact vs contact 0.92 0.46, 1.86 0.82
Supplementation Non supplemented vs supplemented 1.62 0.91, 2.91 0.10
Model 2 (≤ 120 minutes vs > 120 minutes)
Time to first breastfeed ≤ 120 minutes vs > 120 minutes 2.45 1.21, 4.95 0.01
Mother's age ≥ 30 years vs < 30 years 0.64 0.35, 1.15 0.14
Baby's gender Female vs male 2.15 1.23, 3.76 <0.01
Parity Multiparous vs primiparous 1.39 0.77, 2.49 0.28
Gestational age ≥ 37 weeks vs ≤ 36 weeks or less 1.07 0.27, 4.25 0.92
Method of delivery Non Caesarean section vs Caesarean section 1.02 0.41, 2.59 0.96
Bleeding at delivery < 500 ml vs ≥ 500 ml 1.29 0.62, 2.69 0.49
Early skin-to-skin contact Non contact vs contact 0.90 0.45, 1.80 0.76
Supplementation Non supplemented vs supplemented 1.45 0.80, 2.65 0.23
  1. CI = confidence interval