Top 10 categories for betweenness centrality with number of links to other categories (degree)
| Category | No of health boards using category | Betweenness centrality | Degree (no of lines connecting to each vertex in the network) |
| Other | 10 | 1.000 | 31 |
| Communication | 12 | 0.944 | 30 |
| Infection Control | 12 | 0.939 | 23 |
| Clinical | 3 | 0.539 | 43 |
| Security | 16 | 0.479 | 19 |
| Equipment | 13 | 0.248 | 19 |
| Violence | 16 | 0.239 | 10 |
| Personal Accident | 11 | 0.234 | 23 |
| Access | 11 | 0.193 | 15 |
| Resources | 2 | 0.171 | 18 |
| Mean | 10.6 (SD 4.7) | 0.4986 (SD 0.34) | 23.1 (SD 9.45) |