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Does the Relationship of the Proxy to the Target Person Affect the Concordance between Survey Reports and Medicare Claims Measures of Health Services Use?
Author(s) -
Wehby George L.,
Jones Michael P.,
Ullrich Fred,
Lou Yiyue,
Wolinsky Fredric D.
Publication year - 2016
Publication title -
health services research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.706
H-Index - 121
eISSN - 1475-6773
pISSN - 0017-9124
DOI - 10.1111/1475-6773.12321
Subject(s) - concordance , proxy (statistics) , medicine , affect (linguistics) , survey data collection , demography , family medicine , gerontology , psychology , statistics , mathematics , communication , sociology
Objectives To compare concordance of survey reports of health service use versus claims data between self respondents and spousal and nonspousal relative proxies. Data Sources 1995–2010 data from the Survey on Assets and Health Dynamics among the Oldest Old and 1993–2010 Medicare claims for 3,229 individuals (13,488 person‐years). Study Design Regression models with individual fixed effects were estimated for discordance of any hospitalizations and outpatient surgery and for the numbers of under‐ and over‐reported physician visits. Principal Findings Spousal proxies were similar to self respondents on discordance. Nonspousal proxies, particularly daughters/daughters‐in‐law and sons/sons‐in‐law, had less discordance, mainly due to reduced under‐reporting. Conclusions Survey reports of health services use from nonspousal relatives are more consistent with Medicare claims than spousal proxies and self respondents.