Descriptive statistics and coefficient of internal consistency for the Safety Attitudes Questionnaire, Safety Climate Survey, and Information and Analysis scales
| Scale | No of survey items | Cronbach alpha | Respondent level N=1406 | Intensive care unit level N=64 | Hospital level N=40 | |||
| Mean (SD) | Median (IQR) | Mean (SD) | Median (IQR) | Mean (SD) | Median (IQR) | |||
| Safety Attitudes Questionnaire: overall18 | 30 | 0.93 | 3.65 (0.53) | 3.69 (3.4 to 4.0) | 3.66 (0.27) | 3.73 (3.5 to 3.8) | 3.69 (0.23) | 3.74 (3.6 to 3.8) |
| Team Work | 6 | 0.80 | 3.75 (0.66) | 3.83 (3.3 to 4.2) | 3.76 (0.34) | 3.82 (3.6 to 4.0) | 3.79 (0.27) | 3.81 (3.7 to 4.0) |
| Safety Climate | 7 | 0.82 | 3.79 (0.60) | 3.86 (3.4 to 4.1) | 3.80 (0.28) | 3.87 (3.6 to 4.0) | 3.82 (0.23) | 3.87 (3.7 to 4.0) |
| Job Satisfaction | 5 | 0.83 | 3.77 (0.73) | 3.80 (3.4 to 4.2) | 3.79 (0.36) | 3.83 (3.6 to 4.0) | 3.83 (0.31) | 3.90 (3.7 to 4.0) |
| Stress Recognition | 4 | 0.73 | 3.68 (0.74) | 3.75 (3.3 to 4.0) | 3.67 (0.28) | 3.65 (3.5 to 3.8) | 3.66 (0.22) | 3.64 (3.5 to 3.8) |
| Perceptions of Management | 4 | 0.78 | 3.30 (0.87) | 3.50 (2.8 to 4.0) | 3.30 (0.50) | 3.41 (3.0 to 3.6) | 3.37 (0.46) | 3.44 (3.2 to 3.6) |
| Working Conditions | 4 | 0.76 | 3.45 (0.76) | 3.50 (3.0 to 4.0) | 3.47 (0.36) | 3.56 (3.3. to 3.7) | 3.49 (0.32) | 3.56 (3.3 to 3.7) |
| Safety Climate19 | 10 | 0.86 | 3.63 (0.63) | 3.70 (3.2 to 4.0) | 3.63 (0.33) | 3.69 (3.5 to 3.8) | 3.66 (0.29) | 3.72 (3.6 to 3.8) |
| Information and Analysis9 | 4 | 0.95 | 3.72 (0.76) | 4.00 (3.25 to 4.0) | 3.72 (0.37) | 3.73 (3.5 to 4.0) | 3.74 (0.32) | 3.75 (3.5 to 4.0) |
Each item is answered using a five-point Likert scale: 1=disagree strongly; 2=disagree slightly; 3=neutral; 4=agree slightly; 5=agree strongly.