Tables
- TABLE 1
Associations between breastfeeding duration and respiratory tract infections
Breastfeeding duration as categorical exposure Unadjusted (n=4040) Adjusted# (n=3963) OR (95% CI) p-value OR (95% CI) p-value Frequent colds No breastfeeding 1.00 1.00 ≤6 months 0.97 (0.82–1.16) 0.749 1.00 (0.83–1.21) 0.985 >6 months 0.99 (0.80–1.24) 0.958 1.01 (0.80–1.27) 0.953 Ear infections No breastfeeding 1.00 1.00 ≤6 months 0.91 (0.80–1.05) 0.198 0.97 (0.84–1.13) 0.710 >6 months 0.84 (0.70–0.99) 0.048 0.88 (0.73–1.06) 0.177 Croup No breastfeeding 1.00 1.00 ≤6 months 0.92 (0.71–1.19) 0.523 0.95 (0.72–1.26) 0.738 >6 months 0.92 (0.66–1.28) 0.612 0.86 (0.60–1.23) 0.408 Bronchiolitis No breastfeeding 1.00 1.00 ≤6 months 0.79 (0.64–0.97) 0.028 0.89 (0.70–1.12) 0.316 >6 months 0.68 (0.51–0.91) 0.009 0.72 (0.52–0.97) 0.034 Pneumonia No breastfeeding 1.00 1.00 ≤6 months 1.28 (0.70–2.35) 0.421 1.44 (0.76–2.73) 0.260 >6 months 1.18 (0.55–2.55) 0.675 1.11 (0.48–2.55) 0.810 Breastfeeding duration as continuous exposure Unadjusted (n=2286) Adjusted# (n=2248) OR¶ (95% CI) p-value OR¶ (95% CI) p-value Frequent colds No breastfeeding 1.00 1.00 Breastfeeding (per month) 1.00 (0.98–1.03) 0.736 1.00 (0.98–1.03) 0.734 Ear infections No breastfeeding 1.00 1.00 Breastfeeding (per month) 0.99 (0.97–1.01) 0.277 0.99 (0.97–1.01) 0.408 Croup No breastfeeding 1.00 1.00 Breastfeeding (per month) 1.00 (0.96–1.04) 0.827 0.99 (0.95–1.03) 0.571 Bronchiolitis No breastfeeding 1.00 1.00 Breastfeeding (per month) 0.95 (0.91–0.99) 0.016 0.96 (0.92–1.00) 0.054 Pneumonia No breastfeeding 1.00 1.00 Breastfeeding (per month) 1.00 (0.91–1.10) 0.972 1.00 (0.90–1.11) 0.991 Baseline group: children that had never been breastfed. #: for sex, ethnicity, socioeconomic status (Townsend deprivation score), perinatal factors (gestational age, birthweight, birth season), environmental factors (pre- and post-natal maternal smoking, number of older siblings, day care attendance) and family history of asthma, hay fever and bronchitis. ¶: ORs here are presented as odds with every 1-month increase of breastfeeding duration compared to odds of children who had never been breastfed.
Vol 3 Issue 2
Table of Contents
Breastfeeding and respiratory tract infections during the first 2 years of life
