The association between duration of KMC per day and method of feeding breast milk was analyzed for all infants. The results showed that infants who were given breast milk by ‘‘breast only’’ at 1 month (po.05) and 3 months (po.05) had experienced more KMC time per day than infants who were given breast milk by ‘‘breast and bottle/only bottle/other method.’’ No difference between PTand VPT infants was found at 2, 4, 5, and 6 months. When analyzing the PT group separately, the same associations were found as those in all infants. No associations were observed in a separate analysis of the VPT dyads.