title: Contribution of chronic conditions to aggregate changes in old-age functioning.
authors.forename: Peizhong Peter
authors.initials: PP
authors.lastname: Wang
authors.forename: Elizabeth M
authors.initials: EM
authors.lastname: Badley
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D001168:Arthritis / Q000453:epidemiology; D002908:Chronic Disease; D003627:Data Interpretation, Statistical; D006233:Persons with Disabilities; D006801:Humans; D008962:Models, Theoretical; D010024:Osteoporosis / Q000453:epidemiology; D015995:Prevalence; D012307:Risk Factors