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. 2013 Jan;79(2):497–507. doi: 10.1128/AEM.02359-12

Table 1.

Number of infants who were breast- and formula-fed and who received solid food at 6 weeks, 4 months, and 1 year of age

Diet (no. of infants) % infantsa receiving different diets
6 wk 4 mo 1 yr
Breast-feeding (84) 97.6 95.2 29.8
Formula feeding (84) 2.3 4.8 29.8
Combined (85) 10.6 21.2 55.3
Solids (87) NA 13.8 98.9
a

Data are based on the questionnaire filled out by parents at 2 years. The total number of infants in the study was 87. NA, not applicable.