Comparison of summed and factor scores for full and candidate NHSOPSC short-version instruments
| Full version | Short-version 1 | Short-version 2 | ||
| r* | sig. | r* | sig. | |
| Sum† | 0.99 | 0.000 | 0.96 | 0.000 |
| Factor 1: safety improvement actions | 0.99 | 0.000 | 0.99 | 0.000 |
| Factor 2: teamwork | 0.92 | 0.000 | 0.92 | 0.000 |
| Factor 3: information flow | 0.96 | 0.000 | 0.91 | 0.000 |
| Factor 4: management support | 0.96 | 0.000 | 0.96 | 0.000 |
| Factor 5: compliance with procedures | 0.75 | 0.000 | ||
| Factor 6: managing workload | 0.93 | 0.000 | ||
| Factor 7: reporting mistakes | ||||
*Pearson correlation.
†Sum: total score of the scale.