Fully incremental cost-effectiveness analysis of mean time in the system
| Model | Mean time in the system (min) | Costs per patient (£) | Incremental effectiveness (min) | Incremental costs | Incremental cost-effectiveness ratio |
| Usual care | 239 | 0 | N/A | N/A | N/A |
| GP open 9:00–17:00 | 210 | 6.76 | 29 | 6.76 | 0.23 |
| GP open 9:00–21:00 | 202 | 10.14 | 8 | 3.38 | 0.42 |
| GP always open | 189 | 20.28 | 13 | 10.14 | 0.78 |
GP, general practice.