Unit | Implementation strategy used | Number referred | Patients aged ≥18 years visiting unit | Referred/1000 visits | Risk ratio (compared with unit I) | CI |
---|---|---|---|---|---|---|
I | Explicit | 262 | 6075 | 43 | 1 | Â |
II | Explicit | 35 | 5668 | 6 | 0.15 | 0.11-0.20 |
III | Explicit | 68 | 2492 | 27 | 0.64 | 0.49-0.82 |
IV | Implicit | 48 | 4697 | 10 | 0.24 | 0.18-0.33 |
V | Implicit | 57 | 5499 | 10 | 0.24 | 0.19-0.31 |
VI | Implicit | 38 | 3676 | 10 | 0.24 | 0.18-0.33 |