Unadjusted Measure- and Improve-Phase Infiltration Rates
| Center | Measure-phase rate | SE | Improve-phase rate | SE | Change |
| A | 13.3% | 2.1% | 2.9% | 1.0% | −78% |
| B | 15.7% | 4.0% | 6.0% | 2.6% | −62% |
| C | 12.8% | 1.5% | 8.7% | 1.3% | −32% |
| D | 2.1% | 0.6% | 1.9% | 0.6% | −10% |
Centers’ volumes are not included to help ensure individual center anonymity.