Healthcare use during transfer period compared to pretransfer.
| Characteristics | IRR∗ | 95% CI | p |
|---|---|---|---|
| All ambulatory care visits | |||
| Any transfer | 0.76 | 0.66–0.87 | < 0.01 |
| Successful unilateral transfer | 0.86 | 0.69–1.09 | 0.22 |
| Successful overlapping transfer | 0.70 | 0.57–0.86 | < 0.01 |
| Lost to followup | 0.70 | 0.53–0.93 | 0.02 |
| Pediatric only | 1.21 | 0.97–1.52 | 0.10 |
| Acute care visits | |||
| Any transfer | 0.22 | 0.13–0.37 | < 0.01 |
| Successful unilateral transfer | 0.30 | 0.14–0.67 | < 0.01 |
| Successful overlapping transfer | 0.18 | 0.08–0.39 | < 0.01 |
| Lost to followup | 0.14 | 0.04–0.43 | < 0.01 |
| Pediatric only | 0.25 | 0.17–0.37 | < 0.01 |
↵∗Incidence rate ratios (IRR) for each transfer group estimated from nega- tive binomial regression models of healthcare visits during the observation period compared to baseline period, clustered by subject.