Allen K, Anderson TM, Chajewska U, et al. - Via analyzing data from the Centers for Disease Control and Prevention's Cohort Linked Birth/Infant Death data set (2011‐2013; 11,737,930 live births), researchers sought to systematically explore the pregnancy, birth and demographic‐related factors associated with age of death in sudden unexpected infant death (SUID), defined as deaths from sudden infant death syndrome, ill‐defined causes, or accidental suffocation and strangulation in bed. Forty‐three characteristics revealed a significant change in age of death with two major patterns: (a) younger chronologic age at death was correlated with maternal smoking and factors associated with lower socio‐economic status, and (b) older age was related to low birthweight, prematurity and admission to the neonatal intensive care unit. However, these factors were associated with younger age when age was corrected for gestation. Factors which varied with the age of death are well-documented SUID risk factors. Most of these risk factors were correlated with younger age at death after allowing for gestational age at birth.