Early Onset (Under Age 30 Years) and Panic Disorder as Markers for Etiologic Homogeneity in Major Depression
Price R, Kidd K, Weissman M. Early Onset (Under Age 30 Years) and Panic Disorder as Markers for Etiologic Homogeneity in Major Depression. JAMA Psychiatry 1987, 44: 434-440. PMID: 3472494, DOI: 10.1001/archpsyc.1987.01800170048008.Peer-Reviewed Original ResearchConceptsEarly onsetMajor depressionPanic disorderLate-onset depressionPrevalence of depressionElevation of riskFamilies of probandsYale Family StudyEtiologic homogeneityHigh riskPatterns of transmissionOlder age cohortsRestriction of analysisDepressionPopulation ratesFamily studiesProbandsOnsetDisordersAge cohortsRiskGenetic modelsSample sizeCohortPrevalence