Table 2.
Reports of Health Insurance Coverage in Experimental and Matching Studies
| Studies and Target Population | Percent of Medicaid Population Answering Correct Insurance Type | Percent of Medicaid Population Answering Wrong Insurance Type | Percent of Medicaid Population Answering They Are Uninsured |
|---|---|---|---|
| Experimental studies | |||
| Adults on Medicaid in CA 2004 | 83.1 | 6.5 | 10.4 |
| Nonelderly (<65) persons on Medicaid in FL 2004 | 87.0 | 8.1 | 4.9 |
| Persons on Medicaid in PA 2004 | 79.9 | 16.7 | 3.4 |
| Children on Medicaid in MN 1999* | 79.5 | 16.0 | 4.5 |
| Persons on Medicaid in MN 1999‡ | 54.0 | 41.9 | 4.1 |
| Adults on Medicaid in Blue Cross in MN 2003§ | 84.3 | 15.1 | 0.6 |
| Persons on Medicaid in MD 2004¶ | 87.5 | 8.1 | 4.4 |
| Matching study | |||
| Adults (age 15–64) on Medicaid in CA (pooled 1990–2000 data)∥ | 72.3 | 6.0 | 21.7 |
Note: All experimental studies compared “point in time” uninsurance self-reports to “point in time” Medicaid enrollment, with the exception of MD, which compared “uninsured all year” self-reports to Medicaid enrollment “at some point during the year.”
*
Blumberg and Cynamon (1999). Note: Results from Study 1 only (MN) are included here.
‡
Call et al. (2001). Note: This study did not allow for multiple types of insurance coverage; those responding “yes” to Medicare were not asked the Medicaid question, thereby potentially resulting in a lower level of accurate Medicaid reporting.