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