We read with interest the article by Grupp-Phelan et al1 and have noted a recent trend toward shorter hospital stays for mothers and newborns .2,3 Infants undergoing a normal 6-hour postnatal transition period are far less likely to have problems requiring hospitalization in the first 3 days of life than those who have maladaptation to extrauterine life because of atypical hospital practices. Readmissions for jaundice mostly occur after 3 days, and they seem to be more frequent in newborns who are discharged from the hospital sooner than 48 hours following delivery.2