Table 1.
Characteristics of Patients with a Coronary Stent by Low-Income Cost Subsidy Status, Before and After Inverse Propensity Score Weighting
| Inverse Propensity Score Unweighted |
Inverse Propensity Score Weighted |
|||
|---|---|---|---|---|
| Characteristic | LIS Enrollees (n=504) |
Not Enrolled in LIS (n=2463) |
LIS Enrollees (n=504) |
Not Enrolled in LIS (n=2463) |
| Age (yrs), mean ± SD | 73.8 ± 5.8 | 74.4 ± 5.9 | 74.4 ± 5.8 | 74.3 ± 5.9 |
| Female sex | 61% | 37% | 42% | 41% |
| Comorbidities | ||||
| Hypertension | 84% | 75% | 76% | 77% |
| Coronary artery disease | 90% | 86% | 85% | 86% |
| Mental health condition (not schizophrenia) | 13% | 8% | 9% | 9% |
| Dementia | 4% | 3% | 3% | 3% |
| Osteoarthritis | 23% | 17% | 18% | 18% |
| Rheumatoid arthritis | 2% | 2% | 2% | 2% |
| Cancer (not skin cancer) | 17% | 20% | 19% | 19% |
| Chronic obstructive pulmonary disease | 35% | 19% | 22% | 22% |
| Congestive heart failure | 32% | 22% | 25% | 24% |
| Atrial fibrillation/arrhythmia | 37% | 33% | 33% | 34% |
| End-stage renal disease | 7% | 4% | 5% | 5% |
| Cerebrovascular accident | 22% | 17% | 18% | 17% |
| Peripheral arterial disease | 28% | 18% | 20% | 20% |
| Diabetes mellitus | 45% | 29% | 33% | 32% |
| Hyperlipidemia | 72% | 69% | 68% | 70% |
| Schizophrenia | 2% | 1% | 1% | 1% |
| Last index fill was a 90-day supply | 11% | 18% | 16% | 17% |
LIS = low-income cost subsidy