Breast-feeding and hospitalization for asthma in early childhood: A nationwide longitudinal survey in Japan

Michiyo Yamakawa, Takashi Yorifuji, Tsuguhiko Kato, Yoshitada Yamauchi, Hiroyuki Doi

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Objective: Whether or not breast-feeding is protective against asthma among children is still controversial. Therefore, we examined the effects of breast-feeding on hospitalization for asthma in early childhood. Design: Secondary data analyses of a nationwide longitudinal survey of children in Japan ongoing since 2001, with results collected from 2001 to 2004. We used logistic regression models to evaluate the associations of breast-feeding with hospitalization for asthma in children between the ages of 6 and 42 months, adjusting for children's factors (sex, day-care attendance and presence of older siblings) and maternal factors (educational attainment and smoking habit). Setting: All over Japan. Subjects: Term singleton children with information on feeding practices during infancy (n 43367). Results: After adjusting for maternal factors and children's factors, exclusive breast-feeding at 6-7 months of age was associated with decreased risk of hospitalization for asthma in children. The adjusted odds ratio was 0·77 (95 % CI 0·56, 1·06). One-month longer duration of breast-feeding was associated with a 4 % decreased risk of hospitalization for asthma (OR=0·96; 95 % CI 0·92, 0·99). Conclusions: The protective effects of breast-feeding on hospitalization for asthma were observed in children between the ages of 6 and 42 months.

Original languageEnglish
Pages (from-to)1756-1761
Number of pages6
JournalPublic Health Nutrition
Volume18
Issue number10
DOIs
Publication statusPublished - Oct 7 2015

Keywords

  • Asthma
  • Breast-feeding
  • Child

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health

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