title: Covariances for estimated totals when comparing between years.
authors.affiliation: Department of Epidemiology and Public Health, University of Miami.
authors.forename: J A
authors.initials: JA
authors.lastname: Bean
authors.forename: K L
authors.initials: KL
authors.lastname: Hoffman
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D003627:Data Interpretation, Statistical; D005260:Female; D006306:Health Surveys; D006760:Hospitalization / Q000706:statistics & numerical data*; D006801:Humans; D007902:Length of Stay / Q000706:statistics & numerical data; D008297:Male; D008875:Middle Aged; D010351:Patient Discharge / Q000706:statistics & numerical data; D012107:Research Design; D013997:Time Factors; D014481:United States