Table 1.
Association of Common Factor from 1-Factor Adoption Model with Adoption and Other Characteristics of the Hospital
| Quintile 5 (Quickest) |
Quintile 4 | Quintile 3 | Quintile 2 | Quintile 1 (Slowest) |
Overall | |
|---|---|---|---|---|---|---|
| Fraction aspirin | 0.90 | 0.86 | 0.81 | 0.77 | 0.65 | 0.80 |
| Fraction β Blocker | 0.66 | 0.53 | 0.46 | 0.41 | 0.31 | 0.47 |
| Fraction reperfusion within 12 hours | 0.22 | 0.20 | 0.19 | 0.18 | 0.15 | 0.19 |
| Average hospital AMI volume* | 91 | 104 | 94 | 86 | 67 | 89 |
| Fraction major teaching hospital | 0.45 | 0.30 | 0.24 | 0.16 | 0.06 | 0.24 |
| Fraction for-profit hospital | 0.04 | 0.08 | 0.07 | 0.09 | 0.17 | 0.09 |
| Fraction government hospital | 0.11 | 0.09 | 0.13 | 0.10 | 0.17 | 0.12 |
| Average state income (1994/95) | 43,790 | 42,603 | 42,168 | 42,215 | 41,648 | 42,495 |
| % of Hospitals Performing Stents in 2003/04 | 0.74 | 0.69 | 0.63 | 0.49 | 0.32 | 0.57 |
| Of those, % Drug-Eluting Stent 2003/04 | 0.62 | 0.60 | 0.59 | 0.57 | 0.52 | 0.59 |
Volume for Medicare patients only.
Notes: Each column of the table reports average hospital and patient characteristics by adoption quintile and overall (in the final column). All averages are weighted by number of AMI patients in each hospital. Adoption quintiles were defined based on the common factor estimated from a 1-factor model of hospital use of aspirin, β blockers, and reperfusion. All estimates except for stent data come from the Cooperative Cardiovascular Project (CCP), 1994–1995, with a sample of 139,847 AMI patients and 2999 hospitals. Estimates for each quintile are based on samples of approximately 28,000 AMI patients. Stent data are derived from Medicare Part A (hospital) claims from 2003–2004 for the same sample of hospitals.