Sustainability at 3 Centers (Control Phase) Using Aggregated Rates
| Phase | Adjusted 3-center aggregated infiltration rate | Number of injections | SE | 95% CI |
| Measure | 12.1% | 815 | 2.4% | 8.2, 17.5 |
| Improve | 6.2% | 830 | 1.4% | 3.9, 9.5 |
| Control | 5.2% | 1,763 | 1.1% | 3.5, 7.8 |
CI = confidence interval.