One-way sensitivity analysis
| Parameter | Base-case | Range of values | Cost per scald avoided |
| Base-case minimum cost of installation incurred by Housing Association and costs of education materials incurred by NHS (£13.68) (£) | £13.68 | £9.58–17.78 | Cost savings of £12 653; cost savings of £1892 |
| Risk reduction using TMVs | 0.68 | 0.48–0.88 | £242; cost savings of £11 363 |
| Number of children aged 0–4 years having bath water scalds per annum | 653 | 457–849 | £405; cost savings of £11 411 |
| Percentage of children 0–4 years with bath water scald requiring ≥5 days hospitalisation or transfer to specialist hospital or unit | 23% | 16–30% | Cost savings of £4680 (based on treatment costs decreasing to £22 633); cost savings of £10 229 (based on treatment costs increasing to £28 182) |
| Percentage of children 0–4 years with bath water scald requiring ≥5 days hospitalisation or transfer to specialist hospital or unit (based on wider societal treatment costs of £71 902) | 23% | 16–30% | Cost savings of £53 949 (based on treatment costs remaining at £71 902 as per HWBLF response) |
| Estimated number of affected households in social housing in the UK | 582 700 | 407 890–757 510 | Cost savings of £12 659; cost savings of £1887 |
| Maximum cost of purchasing and installation of TMVs and educational materials | £273.96 | £191.77–356.15 | £226 451–442 181 |
| Base-case minimum cost of installation incurred by Housing Association and costs of education materials incurred by NHS (£13.68) (£) with treatment costs based on wider societal treatment costs of £71 902 | £71 902 | £50 331–93 473 | Cost savings of £32 378; cost savings of £75 520 |
| Estimate of the proportion of all admissions and attendances that occur to children living in social housing (59%) | 3.49 | 41–77% | £571; cost savings of £11 459 |
| Estimate for admitted patients only | 297/437 | Cost savings of £1614–45 062 | |
TMV, thermostatic mixer valve.