2006o-228 2008f-093 agefactors child chronicdisease comorbidity control costof databasesastopic decisionmaking disabledpersons economics employee employer-sponsoredhealthinsurance health healthbenefitplans healthcarecosts healthcarereform healthinsurance healthservicesaccessibility hv1553f9962007 insurance medicalcare medicallyuninsured medicalpolicy numericaldata organizational peoplewithdisabilities prevention servicesfor socialscience sociologyofdisability statistics statisticsastopic trends unitedstates w250aa1 w275aa1h2152008 w275aa1w987e2007