Table 2.
Model assumptions and sources for the costs and utilities
| Category | Assumption | Mean value | Sensitivity analysis distribution | Notes |
| Intervention costs* | Advocate salaries and travel costs | £24 518 | 0.9 fte including employer National Insurance contribution and management costs from IRIS. | |
| Clinical staff time and travel to lead training sessions | £3766 | From IRIS | ||
| Administration costs | £1401 | From IRIS | ||
| Practice reimbursement | £9413 | From IRIS | ||
| Total cost for the intervention | £39 097 | Lognormal (0.1) | From IRIS | |
| Number of women intervention costs divided by | 70 521 | Lognormal (0.1) | From IRIS | |
| Cost per woman registered | £0.55 | From IRIS | ||
| Onward referral | £823 | Lognormal (0.75) | A one-time cost for women entering the advocacy state from abuse unidentified from IRIS + Sullivan et al24 | |
| State costs | No abuse | £102 | Lognormal (0.25) | Walby23 Distribution is an assumption. |
| Abuse unidentified | £4721 | Lognormal (0.25) | Walby23 Distribution is an assumption. | |
| Identified existing victim | £4721 | Lognormal (0.50) | Walby23 Distribution is an assumption. | |
| Advocacy | £4721 | Lognormal (0.75) | Walby23 Distribution is an assumption. | |
| Utilities | No abuse | 0.85 | β (0.00181) | Kind et al25 |
| Abuse unidentified | 0.63 | β (0.01588) | Wittenberg et al26 | |
| Identified existing victim | 0.63 | β (0.01588) | Wittenberg et al26 | |
| Advocate | 0.65 | β (0.01525) | Wittenberg et al26 |
*
Costs are in 2008 UK pounds.
IRIS, Identification and Referral to Improve Safety.