Table 3.
Differences in the Baseline Characteristics of Participants With and Without Medical Record Retrieval among Those With Claims
| Characteristic | Medical Charts Retrieved (n = 204), % | Medical Charts Not Retrieved (n = 78), % |
|---|---|---|
| Age group, y* | ||
| < 65 | 7.8 | 9.0 |
| 65-74 | 43.1 | 60.3 |
| ≥ 75 | 49.0 | 30.8 |
| Female | 44.6 | 55.1 |
| Race | ||
| Black | 40.7 | 66.7 |
| White | 59.3 | 33.3 |
| Body mass index | ||
| < 18.5 | 2.5 | 2.6 |
| 18.5-25.0 | 34.3 | 28.2 |
| 25.0-30.0 | 35.8 | 33.3 |
| 30.0-35.0 | 18.1 | 20.5 |
| 35.0-40.0 | 7.4 | 11.5 |
| ≥ 40.0 | 2.0 | 3.9 |
| Smoking status† | ||
| Never a smoker | 36.7 | 40.7 |
| Past smoker | 48.5 | 37.2 |
| Current smoker | 10.8 | 23.1 |
| Comorbid conditions† | ||
| Atrial fibrillation | 13.4 | 15.8 |
| Deep vein thrombosis | 9.1 | 16.9 |
| Diabetes mellitus | 14.3 | 27.4 |
| Dialysis | 1.5 | 0.0 |
| Dyslipidemia | 55.0 | 57.7 |
| Heart disease‡ | 32.8 | 42.1 |
| Kidney failure | 3.5 | 3.9 |
| Malignancy | 20.8 | 13.4 |
| Medications† | ||
| Regular aspirin use | 47.5 | 50.0 |
| History of cerebrovascular disease | ||
| Prior stroke | 23.0 | 27.3 |
| Prior transient ischemic attack | 10.8 | 10.7 |
*
At the time of enrollment into the cohort.
†
Self-reported at baseline.
‡
Self-reported angioplasty, coronary artery bypass graft, myocardial infarction, or stenting or evidence of myocardial infarction via electrocardiogram.