Medicare Enrollment Rates Across Six Asian Subgroups in the USA.

OBJECTIVES: Although Medicare is a vital source of health insurance coverage for older Americans, little is known about Medicare enrollment among older Asians. This study aimed to examine heterogeneity in Medicare enrollment across the six largest subgroups of Asian Americans (Chinese, Japanese, Filipino, Indian, Korean, and Vietnamese), in relation to their citizenship status and labor force participation.
METHODS: Data from the American Community Survey Public Use Microdata Sample (2014-2018) were analyzed for older foreign-born Asians aged 65 or older (N = 83,378). A two-level multilevel logistic regression model (states > individuals) was used to model the probabilities of Medicare enrollment, accounting for state-level residential clustering by Asian subgroup and, thus, for nonindependence among respondents from the same state.
RESULTS: The results indicated a substantial amount of heterogeneity in Medicare enrollment across the six Asian subgroups. Although the overall Medicare enrollment rate was low (90.2%), the rates varied from 85.5% among Indians to 93.8% among Koreans and Japanese. Naturalized citizens and those not in the labor force were associated with greater probabilities of Medicare enrollment. However, the relative differences in the Medicare enrollment rates across the six Asian subgroups were different by individuals' naturalization status and labor force participation (i.e., significant three-way interactions). DISCUSSION: These results highlight that aggregated data cannot accurately represent Medicare and health insurance status of older Asians with different sub-ethnic backgrounds. Intragroup and intergroup differences in Medicare enrollment among foreign-born older Asians should be considered for targeted policy approaches for this group of older adults.