Age and season of birth in sudden infant death syndrome in North Carolina, 1982-1987: no interaction.
Sudden infant death syndrome (SIDS) is a major cause of death in the postneonatal period. SIDS peaks in the winter and at age 3 months. The hypothesis that season and age interact to determine SIDS survival was tested in race-specific hazards models that included an interaction term for season of birth and survival time. The study population was the 1982-1984 and 1985-1987 North Carolina birth cohorts. The interaction term had null effect in all models, indicating that season and age are independent determinants of SIDS survival. These results may be confounded by exposure to cigarette smoke, for which no data were available.
Leiss
J K
JK
Department of Biostatistics, University of North Carolina, Chapel Hill.
Suchindran
C M
CM
D001741:Black or African American; D000367:Age Factors; D001719:Birth Certificates; D001724:Birth Weight; D044383:Black People; D002423:Cause of Death; D015331:Cohort Studies; D015986:Confounding Factors, Epidemiologic; D003644:Death Certificates; D004522:Educational Status; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008423:Maternal Age; D008498:Medical Record Linkage; D009657:North Carolina / Q000453:epidemiology; D010298:Parity; D011295:Prenatal Care / Q000592:standards; D016016:Proportional Hazards Models; D012307:Risk Factors; D012621:Seasons; D012907:Smoking / Q000009:adverse effects / Q000453:epidemiology; D013398:Sudden Infant Death / Q000453:epidemiology* / Q000209:etiology; D016019:Survival Analysis; D044465:White People