Exhibit 7. Comparative Odds of Being Observed as Treated by Beta Blockers Using a 30-Day Observable Day Requirement or Adjustment for Total Number of Observable Days.
| Method 1 (Acute Care Discharge Date) | Method 2 (Institutional Discharge Date) | Adjustment for Number of Observable Days using Acute Discharge Date | ||||
|---|---|---|---|---|---|---|
| Unadjusted ORs (95% CL) | Adjusted ORs (95% CL) | Unadjusted OR (95% CL) | Adjusted ORs (95% CL) | Unadjusted OR (95% CL) | Adjusted ORs (95% CL) | |
| Group 11 | 1.00 | 1.00 | 1.00 | 1.00 | NA | NA |
| Group 22 | 0.60 | 0.71 | 0.59 | 0.70 | NA | NA |
| (0.59, 0.62) | (0.70, 0.73) | (0.57, 0.60) | (0.68, 0.71) | |||
| Group 33 | 0.38 | 0.52 | NA | NA | NA | NA |
| (0.37, 0.39) | (0.51, 0.54) | |||||
| Age | 0.97 | 0.97 | 0.97 | 0.97 | 0.97 | 0.97 |
| (0.97, 0.97) | (0.97, 0.97) | (0.97, 0.97) | (0.97, 0.97) | (0.97, 0.97) | (0.97, 0.97) | |
| CCI score | 0.86 | 0.89 | 0.86 | 0.89 | 0.86 | 0.90 |
| (0.86, 0.86) | (0.89, 0.90) | (0.86, 0.87) | (0.89, 0.89) | (0.86, 0.86) | (0.90, 0.91) | |
| Inpatient LOS | 0.96 | 0.98 | 0.96 | 0.98 | 0.96 | 0.99 |
| (0.96, 0.96) | (0.98, 0.98) | (0.96, 0.96) | (0.97, 0.98) | (0.96, 0.96) | (0.99,0.99) | |
| Number of observable days | NA | NA | NA | NA | 1.06 | 1.05 |
| (1.06,1.06) | (1.05, 1.05) | |||||
1
NOTES: 1Group 1 were discharged to community and observable all 30 days.
2
Group 2 were discharged to community but were unobservable at some point during the first 30 days.
3
Group 3 were discharged to post-acute care, and were immediately unobservable.
SOURCE: Calculations based on CCW Medicare AMI cohort 2007–2008, using enrollment and Part A and B fee-for-service claims, 2006–2009.