Table 3.
Internal reliability of the HSOPSC’s safety culture factors in 920 responses to a longitudinal follow-up study of operating theatre staff perceptions on hospital safety culture after a stepped wedge cluster randomised controlled trial implementation of the WHO’s Surgical Safety Checklists at Haukeland University Hospital, Bergen, Norway, 2009–2017
| Survey years | |||||
| 2009 | 2010 | 2017 | All | ||
| Safety culture dimensions* | Items | α | α | α | α |
| Overall PS in hospital | 4 | 0.78 | 0.71 | 0.76 | 0.76 |
| Frequency of events | 3 | 0.82 | 0.82 | 0.75 | 0.81 |
| Unit managers support PS | 4 | 0.85 | 0.84 | 0.80 | 0.84 |
| Continuous improvement | 3 | 0.64 | 0.67 | 0.63 | 0.65 |
| Teamwork in unit | 4 | 0.76 | 0.73 | 0.70 | 0.74 |
| Open communication | 3 | 0.67 | 0.72 | 0.67 | 0.69 |
| Error feedback | 3 | 0.72 | 0.77 | 0.78 | 0.76 |
| Non-punitive | 3 | 0.67 | 0.60 | 0.72 | 0.67 |
| Adequate staffing | 4 | 0.59 | 0.67 | 0.63 | 0.63 |
| Hospital manager support PS | 3 | 0.80 | 0.76 | 0.81 | 0.79 |
| Teamwork across units | 4 | 0.68 | 0.69 | 0.60 | 0.67 |
| Handoffs and transitions | 4 | 0.74 | 0.76 | 0.76 | 0.75 |
*All dimensions gave average scores on the included items on a scale from 1 to 5.
α, Cronbach’s alpha; HSOPSC, Hospital Survey on Patient Safety Culture; PS, patient safety.