Table 2.
Change in the annual rates of selected inpatient urological surgeries
| Massachusetts | Control | DID Analysis | ||||||
|---|---|---|---|---|---|---|---|---|
| Pre Reform | Post Reform | Observed change | Pre Reform | Post Reform | Observed change (%) | Net change (%) | p-value | |
| Prostatectomy | 33.1 | 36.0 | 8.8% | 20.1 | 24.5 | 21.9% | −4.4% | 0.391 |
| Cystectomy | 1.6 | 1.6 | 0.0% | 1.3 | 1.2 | −9.1% | 6.2% | 0.589 |
| Nephrectomy | 7.9 | 7.2 | −9.2% | 6.9 | 6.6 | −4.8% | −5.1% | 0.322 |
| Partial Nephrectomy | 3.3 | 4.9 | 47.3% | 2.6 | 3.7 | 43.8% | 13.3% | 0.386 |
| BPH procedures | 10.9 | 9.5 | −12.6% | 10.4 | 7.8 | −24.6% | 11.4% | 0.041 |
| PCNL | 10.0 | 10.5 | 5.4% | 11.5 | 12.9 | 11.8% | −8.5% | 0.116 |
| Pyeloplasty | 1.8 | 1.8 | 1.6% | 1.4 | 1.4 | 0.8% | 0.9% | 0.920 |
Pre-reform and post-reform values represent unadjusted mean rates of selected inpatient urological surgeries per year per 100,000 individuals. DID analysis refers multivariable difference-in-differences analysis and net change refers to the change in the rate of surgery in Massachusetts that is attributable to healthcare reform after adjusting for secular changes. In this analysis, the pre and post-reform transition point is defined as July 2007. Control states are New Jersey and New York.