| Hypotheses tested: output was related with maturity of the hospital’s QI system | Operationalisation of values tested | Distribution of QI maturity classification (mean scores) | |||
| Number of items included(Cronbach α; n) | Significant at p level | Most mature(⩽25%) | Least mature(>75%) | Total | |
| External pressure | 9 (0.68; n = 126) | <0.001 | 1.71 (n = 78) | 2.75 (n = 76) | 2.25 (n = 310) |
| Safety* | 4 (0.24; n = 313) | <0.001 | 1.38 (n = 86) | 1.53 (n = 85) | 1.44 (n = 349) |
| Support for cross-border care patients | 6 (0.61; n = 298) | <0.001 | 1.60 (n = 86) | 1.76 (n = 84) | 1.96 (n = 346) |
| Distribution of quality improvement maturity classification (%) | |||||
| Availability of AMI indicator: door-to-needle time: % yes | 1 | 0.10 | 65.2 | 47.3 | 57.5 |
| Availability of AMI indicator: aspirin <24 h after AMI: % yes | 1 | 0.03 | 82.4 | 64.0 | 71.4 |
*To avoid overlap contamination in the measures and output, a modified QI maturity index was computed excluding all items related to safety.