摘要:Objective. To investigate differences by gestational age in emergency department visitsand re-hospitalizations during the three years following childbirth discharge.Methods. We performed a historical cohort study in Lazio Region, Italy, for infants bornin 2007-2008 to resident mothers. Health administrative data were used. Analysis wasperformed by multinomial logistic regression.Results. Of 90 545 infants, more than 50% had at least one emergency department visit,and 18.8% at least one re-hospitalization. After the exclusion of infants with congenitalanomalies, relative risk ratios of re-hospitalization and, to a lesser extent, of emergencydepartment visits increased by decreasing gestational age; the two events were also higherfor mothers ≤35 years of age, with low education and of Italian nationality. Residencyoutside the metropolitan area was associated with an increased risk of re-hospitalizationand a decreased risk of emergency department visits.Conclusion. During the three years following childbirth discharge, re-hospitalizationsand, to a lesser extent, emergency department use are inversely related to gestational ageat birth; socio-demographic factors have an effect on the risk of infant use of hospitalresources independent of gestational age.