Descriptive statistics for SCC scale, programme precondition and programme implementation factors
| Scale | Item | Mean | SD |
| SCC scale score (5-point agreement scale ranging from 0 to 4) | SCC composite score (1st time-point) | 3.04 | 0.61 |
| SCC composite score (2nd time-point) | 3.18 | 0.61 | |
| Programme precondition factors (5-point scale ranging from 1 to 5) | a) Recognition of existing safety problems | 3.74 | 0.78 |
| b) Knowledge of how to tackle safety problems | 3.51 | 0.82 | |
| c) Systems & infrastructure to support safety improvement | 3.31 | 0.85 | |
| d) Measuring safety in routine care practices | 3.00 | 0.93 | |
| e) Availability of human resources to support improvement in safety | 2.86 | 0.87 | |
| f) Availability of financial resources to support improvement in safety | 2.76 | 0.88 | |
| g) Stability in terms of meeting external targets | 3.48 | 0.89 | |
| h) Senior staff commitment to safety | 3.74 | 0.94 | |
| Programme implementation factors (5-point scale ranging from -2 to 2) | a) Frontline staff support for the SPI programme | 0.80 | 1.30 |
| b) Availability of early adopters to lead the testing of changes | 0.99 | 1.16 | |
| c) Staff understanding of SPI aims & methods | 0.48 | 1.37 | |
| d) The existing clinical administrative systems to support SPI data collection | 0.29 | 1.33 | |
| e) The way the SPI programme has been managed in the hospital | 0.75 | 1.15 | |
| f) The compatibility of SPI objectives with other targets | 0.60 | 1.11 | |
| g) Senior management/executive support & leadership for the SPI programme | 0.99 | 1.17 | |
| h) Support from line managers for the SPI programme | 0.78 | 1.20 | |
| i) Support from nurses for the SPI programme | 0.90 | 1.13 | |
| j) Support from junior doctors for the SPI programme | −0.19 | 1.20 | |
| k) Support from consultants for the SPI programme | 0.11 | 1.42 | |
| l) Initial choice of SPI team members | 0.81 | 1.16 | |
| m) Collaboration between different professional groups | 0.83 | 1.06 | |
| n) The time period over which process data was collected | 0.47 | 0.90 |
SCC, safety climate and capability.