Skip to main content

Table 8 Means, standard deviations (SD) and Cronbach’s alpha coefficients

From: Assessing safety climate in prehospital settings: testing psychometric properties of a common structural model in a cross-sectional and prospective study

 

HEMS 12

HEMS 16

Ground 16

Total 16

Measurement concepts

Mean (SD)

Alpha

Mean (SD)

Alpha

Mean (SD)

Alpha

Mean (SD)

Alpha

Top level

 Management support for patient safety

3.37 (.84)

.77

3.08 (.87)

.83

3.04 (.86)

.79

3.05 (.86)

.79

Unit level

 Manager expectations & actions promoting patient safety

3.95 (.78)

.87

3.98 (.74)

.81

3.51 (.98)

.87

3.56 (.97)

.87

 Teamwork within units

4.22 (.63)

.77

4.58 (.60)

.86

4.07 (.70)

.82

4.12 (.71)

.83

 Learning, feedback and improvement within units

3.67 (.76)

.77

3.89 (.77)

.79

3.07 (.80)

.74

3.15 (.83)

.76

Individual behavior

 Stop working in dangerous situations

4.11 (.57)

.68

4.25 (.55)

.74

4.08 (.58)

.69

4.10 (.58)

.70

Outcome dimension

 Transitions and handoffs

3.32 (.65)

.78

3.48 (.66)

.85

3.39 (.66)

.77

3.40 (.66)

.78

  1. HEMS 12 = HEMS sample 2012, HEMS 16 = HEMS sample 2016, Ground 16 = ground ambulance sample 2016, Total 16 = combined HEMS and ground ambulance 2016 samples