Table 2.
Comparison of Self-Reported and Claims-Identified AMI Among HRS Respondents
| Self-Reported AMI, % | Claims-Identified AMI, % | ||||||
|---|---|---|---|---|---|---|---|
| Of these, What Percent Had | Of these, What Percent Reported | ||||||
| Total, n | Percent of Respondents | Claims-Identified AMI | Claims-Identified ACS (Includes AMI) | Percent of Respondents | Heart Attack | Heart Problems | |
| Overall | 45 335 | 3.1 | 32.3 | 48.7 | 1.4 | 67.8 | 90.5 |
| ≤75 y old | 22 154 | 2.8 | 35.3 | 51.0 | 1.2 | 74.6 | 93.9 |
| >75 y old | 23 181 | 3.4 | 30.0 | 47.0 | 1.5 | 62.7 | 88.0 |
| P | 0.053 | 0.192 | 0.006* | 0.042* | |||
| Male | 18 943 | 3.9 | 34.4 | 50.2 | 1.8 | 68.5 | 92.2 |
| Female | 26 392 | 2.5 | 30.0 | 47.1 | 1.0 | 66.9 | 88.3 |
| P | 0.166 | 0.413 | 0.687 | 0.068 | |||
| White | 39 269 | 3.2 | 32.4 | 48.8 | 1.4 | 68.5 | 90.8 |
| Black/other | 6066 | 2.3 | 31.0 | 47.9 | 1.2 | 59.6 | 87.5 |
| P | 0.771 | 0.845 | 0.077 | 0.399 | |||
| Not married | 20 528 | 3.2 | 32.6 | 49.6 | 1.5 | 64.5 | 87.5 |
| Married | 24 780 | 3.0 | 32.1 | 47.8 | 1.3 | 71.0 | 93.5 |
| P | 0.874 | 0.626 | 0.108 | 0.058 | |||
| Less than high school | 14 080 | 4.1 | 29.0 | 47.0 | 1.8 | 61.6 | 89.2 |
| High school or greater | 31 253 | 2.7 | 34.3 | 49.8 | 1.2 | 71.4 | 91.3 |
| P | 0.142 | 0.341 | 0.015* | 0.415 | |||
| Below median wealth | 22 207 | 3.7 | 30.0 | 49.0 | 1.6 | 65.8 | 90.1 |
| Above median wealth | 23 128 | 2.6 | 35.0 | 48.5 | 1.2 | 69.9 | 90.9 |
| P | 0.093 | 0.857 | 0.282 | 0.772 | |||
All statistics are calculated accounting for population weights and complex survey design. Claims-identified ACS includes both AMI and non-AMI ACS. AMI is defined by MedPAR claims indicating a visit with a length of stay of at least 3 days, and International Classification of Diseases, Ninth Revision (ICD-9) diagnosis code of 410.01, 410.11, 410.21, 410.31, 410.41, 410.51, 410.61, 410.71, 410.81, or 410.91 in the primary or secondary position. ACS is defined by MedPAR claims indicating a visit with a length of stay of at least 3 days, and ICD-9 diagnosis code of 410, 411, or 413 in any position. When respondents were selected on the basis of claims-identified AMI (the right side of the table), only events between interview waves (for those interviewed in 2 consecutive waves) or <730 days (2 years) before the interview date were counted. All respondents who reported heart problems were subsequently asked about heart attacks. In the validation of self-reported AMI (left half of the table), events within 910 days (2.5 years) were included. Each interview wave per respondent contributes 1 observation. ACS indicates acute coronary syndrome; AMI, acute myocardial infarction; and HRS, Health and Retirement Study.
Significant.