Table 2.
Counts of High Referral Rate Procedures and Population at Risk, by Socio-Demographics
| Characteristics | Total # Procedures (Pre- and Post-reform periods) | Distribution of Procedures
|
# Population at Risk, person years (Pre- and Post-reform periods) | Distribution of Population at Risk
|
||
|---|---|---|---|---|---|---|
| Pre-reform | Post-reform | Pre-reform | Post-reform | |||
| All (age 40+ years) | 201,907 | 100% | 100% | 10,072,992 | 100% | 100% |
| Sex | ||||||
| Women | 123,560 | 60% | 62% | 5,387,207 | 54% | 53% |
| Men | 78,347 | 40% | 38% | 4,685,785 | 46% | 47% |
| Age (years) | ||||||
| 40 to 64 | 124,966 | 60% | 64% | 7,845,648 | 78% | 78% |
| 70 or older | 76,941 | 40% | 36% | 2,227,344 | 22% | 22% |
| Area Income, Zip Code | ||||||
| Median | ||||||
| Low | 43,880 | 22% | 22% | 2,282,028 | 23% | 23% |
| Medium | 50,454 | 25% | 25% | 2,494,057 | 25% | 25% |
| High | 107,229 | 53% | 53% | 5,296,841 | 53% | 53% |
| Race/ethnicity | ||||||
| Hispanics | 6,688 | 2.8% | 3.8% | 484,209 | 4.5% | 5.1% |
| Blacks | 8,115 | 3.6% | 4.4% | 460,728 | 4.5% | 4.7% |
| Others | 6,324 | 3.4% | 2.8% | 419,872 | 3.9% | 4.4% |
| Whites | 180,780 | 90.1% | 89.0% | 8,708,183 | 87.1% | 85.8% |
Notes:
- Study period comprises pre- and post-reform periods (10/1/2004 – 6/30/2006 and 1/1/2008 – 9/30/2009 respectively).
- Total # Procedures indicates the number of high referral rate procedures performed during hospitalizations in the pre- and post-reform periods.
- Population at risk indicates the aggregate census population (person-years) during the pre- and post-reform periods.
- Area Income cohorts are defined as: low=lowest quartile zip codes, medium=second quartile and high=top two quartile