| Acute trust (n = 96) | Primary care trust (n = 116) | Total (212) | |
| Manchester Patient Safety Framework | 32 | 27 | 59 |
| Safety Attitude Questionnaire | 6 | 2 | 8 |
| Institute for Healthcare Improvement Safety Climate Survey | 7 | 0 | 7 |
| National Staff Survey | 2 | 3 | 5 |
| National Patient Safety | 3 | 1 | 4 |
| Investment in people | 2 | 1 | 3 |
| Competing Values Framework | 1 | 2 | 3 |
| Stanford Patient Safety Culture Inventory | 2 | 1 | 3 |
| General Practice Learning Organisation Diagnostic Tool | 1 | 2 | 3 |
| Agency for Healthcare Research and Quality hospital survey on patient safety culture | 1 | 1 | 2 |
| Nursing Unit Cultural Assessment Tool | 1 | 0 | 1 |
| Organisational Culture Profile | 0 | 1 | 1 |
*Further information on each of the tools, together with references to their use, is available from the authors.