Exhibit 6. Population, Proportion Treated, and Summary Statistics by Number of Observable Days Required to Remain in Sample.
| Acute discharge date | Institutional discharge date | |||||||
|---|---|---|---|---|---|---|---|---|
| Observable days | 30 days | 20 days | 15 days | 10 days | 30 days | 20 days | 15 days | 10 days |
| Sample size | 109,886 | 144,218 | 156,129 | 165,323 | 127,185 | 159,274 | 167,099 | 172,719 |
| Percent treated by beta blockers (BB) | 70% | 68% | 67% | 66% | 67% | 66% | 66% | 65% |
| Mean(median) days to first fill | 12.8 (11) | 12.4 (10) | 12.5 (11) | 12.6 (11) | 13.4 (13) | 13.0 (12) | 13.0 (12) | 13.0 (12) |
| Mean age at index | 78.1 | 78.4 | 78.6 | 78.8 | 78.5 | 78.7 | 78.8 | 78.9 |
| Mean CCI score | 3.2 | 3.4 | 3.4 | 3.5 | 3.4 | 3.5 | 3.5 | 3.6 |
| Mean LOS | 6.6 | 7.0 | 7.2 | 7.4 | 7.2 | 7.4 | 7.5 | 7.6 |
| Previous BB user | 48% | 49% | 49% | 49% | 48% | 49% | 49% | 49% |
| Survived 1 year | 85% | 82% | 81% | 80% | 84% | 81% | 80% | 80% |
SOURCE: Calculations based on CCW Medicare AMI cohort 2007–2008, using enrollment and Part A and B fee-for-service claims, 2006–2009.