RE: 'DURATION OF BREASTFEEDING AND RISK OF OVERWEIGHT: A META-ANALYSIS'

摘要

In a recent paper, Harder et al. (1) presented results from a meta-analysis of the association between duration of breastfeeding and risk of overweight. In a meta-analysis of linear trends, 1 month of breastfeeding was associated with a 4 percent decrease in risk of overweight (odds ratio (OR) = 0.96, 95 percent confidence interval (CI): 0.94, 0.98). Significant heterogeneity was evident. Below, I propose several possible causes of this heterogeneity and suggest that a meta-analysis might have been inappropriate. #