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Social and Health‐Related Factors Associated with Enrollment in Medicare Advantage Plans in Older Adults

OBJECTIVES We assessed the characteristics of older Mexican American enrollees in traditional fee‐for‐service (FFS) and Medicare Advantage (MA) plans and the factors associated with disenrollment from FFS and enrollment in MA plans. DESIGN Longitudinal study linked with Medicare claims data. SETTING...

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Published in:Journal of the American Geriatrics Society (JAGS) 2020-02, Vol.68 (2), p.313-320
Main Authors: Kumar, Amit, Rivera‐Hernandez, Maricruz, Karmarkar, Amol M., Chou, Lin‐Na, Kuo, Yong‐Fang, Baldwin, Julie A., Panagiotou, Orestis A., Burke, Robert E., Ottenbacher, Kenneth J.
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Language:English
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Summary:OBJECTIVES We assessed the characteristics of older Mexican American enrollees in traditional fee‐for‐service (FFS) and Medicare Advantage (MA) plans and the factors associated with disenrollment from FFS and enrollment in MA plans. DESIGN Longitudinal study linked with Medicare claims data. SETTING The Hispanic Established Populations for the Epidemiologic Study of the Elderly. PARTICIPANTS Community‐dwelling Mexican American older adults (N = 1455). MEASUREMENTS We examined insurance status using the Medicare Beneficiary Summary File and estimated the association of sociodemographic and clinical factors with insurance plan switching. RESULTS Among Mexican American older adults, FFS enrollees were more likely to be born in Mexico, speak Spanish, have lower levels of education, and have more disability than MA enrollees. Older adults with a larger number of limitations of instrumental activities of daily living (odds ratio [OR] = .50; 95% confidence interval [CI] = .26‐.98) and more social support (OR = .70; 95% CI = .45‐.98) were less likely to switch from FFS to MA compared with older adults with no limitations and less social support. Additionally, older adults living in counties with a greater number of MA plans were more likely to switch from FFS to MA (OR = 2.1; 95% CI = 1.45‐3.16), compared with counties with a lower number of MA plans. In counties with a higher number of MA plans, older adults with more social support had lower odds of switching from FFS to MA (OR = .48; 95% CI = .28‐.82) compared with older adults with less social support. CONCLUSION Compared with those enrolled in MA, older Mexican American adults enrolled in Medicare FFS are more socioeconomically disadvantaged and more likely to demonstrate poor health status. Stronger social support and increased physical limitations were strongly associated with less frequent switching from FFS to MA plans. Additionally, increased availability of MA plans at the county level is a significant driver of enrollment in MA plans. J Am Geriatr Soc 68:313–320, 2020
ISSN:0002-8614
1532-5415
DOI:10.1111/jgs.16202