title: A response to the points by Manton and Williamson.
authors.affiliation: RAND, Santa Monica, California, USA. darius@rand.org
authors.forename: Darius
authors.initials: D
authors.lastname: Lakdawalla
authors.forename: Jay
authors.initials: J
authors.lastname: Bhattacharya
authors.forename: Dana P
authors.initials: DP
authors.lastname: Goldman
mesh_terms: D000203:Activities of Daily Living; D000328:Adult; D000367:Age Factors; D000368:Aged; D002318:Cardiovascular Diseases / Q000453:epidemiology / Q000517:prevention & control; D002908:Chronic Disease / Q000453:epidemiology; D006233:Persons with Disabilities; D005260:Female; D005544:Forecasting; D015438:Health Behavior; D006304:Health Status; D006306:Health Surveys; D006707:Homes for the Aged / Q000639:trends*; D006801:Humans; D007326:Institutionalization / Q000639:trends*; D008019:Life Style; D008297:Male; D006278:Medicare; D008875:Middle Aged; D009505:Nevada; D009735:Nursing Homes / Q000639:trends*; D015995:Prevalence; D011788:Quality of Life; D016032:Randomized Controlled Trials as Topic; D012307:Risk Factors; D014481:United States; D014589:Utah