Validating health insurance coverage survey estimates - A comparison of self-reported coverage and administrative data records
Validating health insurance coverage survey estimates - A comparison of self-reported coverage and administrative data records
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DOI：
10.1093/poq/nfn013
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发表时间：
2008-06-01
影响因子：
3.4
通讯作者：
Blewett, Lynn
中科院分区：
文献类型：
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作者：
Davern, Michael;Call, Kathleen Thiede;Blewett, Lynn
我们对4，575名成年蓝十字和明尼苏达州蓝盾（BCBS）成员进行了健康保险覆盖调查模块，以检查有健康保险的人是否自我报告他们没有保险。我们还感兴趣的是，受访者是否正确地将自己归类为商业，医疗保险，明尼苏达州医疗保险和/或医疗补助保险（四个样本层）。明尼苏达州的BCBS样本来自公共和商业健康保险覆盖层，这对涉及调查数据的政策研究很重要。我们的研究结果支持我们的健康保险模块的有效性，以确定是否有人谁拥有健康保险被正确编码为有健康保险，因为只有0.4%的BCBS成员回答了调查，好像他们没有保险。然而，我们发现问题的研究人员感兴趣的使用调查响应特定类型的公共覆盖面。例如，21%的医疗补助自我报告的覆盖范围来自已知的注册者，只有67%的MinnesotaCare自我报告的计数来自已知的注册者。最后，我们讨论了这项研究的影响，了解医疗补助“低估”和自我报告的健康保险覆盖范围的有效性。
We administered a health insurance coverage survey module to a sample of 4,575 adult Blue Cross and Blue Shield of Minnesota (BCBS) members to examine if people who have health insurance coverage self-report that they are uninsured. We were also interested in whether respondents correctly classify themselves as having commercial, Medicare, MinnesotaCare, and/or Medicaid coverage (the four sample strata). The BCBS of Minnesota sample is drawn from both public and commercial health insurance coverage strata that are important to policy research involving survey data. Our findings support the validity of our health insurance module for determining whether someone who has health insurance is correctly coded as having health insurance coverage, as only 0.4 percent of the BCBS members answered the survey as though they were uninsured. However, we find problems for researchers interested in using survey responses to specific types of public coverage. For example, 21 percent of the Medicaid self-reported coverage came from known enrollees and only 67 percent of the MinnesotaCare self-reported count came from known enrollees. We conclude with a discussion of the study's implications for understanding the Medicaid "undercount" and the validity of self-reported health insurance coverage.