Results of difference-in-differences analyses
| % difference (95% CI) | P values | |
| 30 days | ||
| Vaccine preventable | 0.0 (−9.2 to 10.0) | 0.995 |
| Acute preventable | 2.7 (−3.7 to 9.7) | 0.416 |
| Chronic preventable | −0.7 (-3.7 to 2.4) | 0.647 |
| 7 days | ||
| Vaccine preventable | 32.6 (10.2 to 59.5) | 0.003 |
| Acute preventable | 44.1 (27.0 to 63.5) | <0.01 |
| Chronic preventable | 27.7 (20.2 to 35.6) | <0.01 |