Characteristics of children admitted during versus after PIPA collaborative
| Characteristic | All admissions n=2159 | During PIPA n=1256 | After PIPA n=903 | P value* |
| Age in years (median, IQR) | 5 (3–9) | 5 (3–9) | 5 (3–9) | 0.700 |
| Male (n, %) | 1328 (61.5) | 771 (61.4) | 557 (61.7) | 0.930 |
| Prior prescription of inhaled corticosteroid (n, %) | 1042 (48.3) | 605 (48.2) | 437 (48.4) | 0.918 |
| Insurance type (n, %) | <0.001 | |||
| Public | 1350 (62.5) | 774 (61.6) | 576 (63.8) | |
| Private | 637 (29.5) | 363 (28.9) | 274 (30.3) | |
| Tri-Care | 23 (1.1) | 16 (1.3) | 7 (0.8) | |
| Other, self-pay, or unknown | 76 (3.5) | 54 (4.3) | 22 (2.4) | |
| Missing | 73 (3.4) | 49 (3.9) | 24 (2.7) |
Bold font signifies statistically significant values.
*Determined using Mann-Whitney U test for core intervention components implemented, Student’s t-test for per cent improvement in guideline adherence and Fisher’s exact test for all others.