Costs and treatment benefit
| Fixed cost of scale-up (annual equivalent) | $55 666 | ||
| Fixed programme infrastructure cost (central overhead cost + cost of service user mobilisation + cost of DHPO input to the programme; annual) | $114 753 | ||
| Total fixed programme cost per year | $170 419 | ||
| Variable cost of treatment per service user (clinical assessment + treatment sessions + indirect and case review costs + LHW peer group meeting attendance) | $3.37 | ||
| Cost of usual care per service user | $0.33 | ||
| Contribution of each cost component to total annual cost of FB | |||
| Fixed cost of scale-up, % | 31 | ||
| Fixed programme infrastructure cost, % | 63 | ||
| Treatment cost*, % | 6 | ||
| Programme benefit | |||
| YLD over 24 months per service user: FB | 0.414 | ||
| YLD over 24 months per service user: usual care | 0.502 | ||
| YLD averted per service user due to treatment with FB | 0.088 | ||
| Incremental net benefit of FB treatment per service user | 0.084 YLD averted | ||
| NNT (base case estimate: CET=$600 per YLD averted) | 3413 service users | ||
| One-way sensitivity analysis (varying CET) | CET=$300 per YLD averted | CET=$1200 per YLD averted | |
| NNT | 7269 service users | 1656 service users | |
| Two-way sensitivity analysis of ICER | 2020 treatment coverage (base case: 12 364 treated) | 50% of 2020 treatment coverage (6182 treated) | 25% of 2020 treatment coverage (3091 treated) |
| Treatment effect=100% of prevalence ratio for CMD observed in FB trial | $191 per YLD averted | $347 per YLD averted | $659 per YLD averted |
| 50% | $302 per YLD averted | $549 per YLD averted | $1044 per YLD averted |
| 25% | $528 per YLD averted | $961 per YLD averted | $1827 per YLD averted |
Created by the authors.
*Annual cost of treatment calculated at the cost-effective NNT value.
CET, cost-effectiveness threshold; CMD, common mental disorder; DHPO, district health promotion officer; FB, Friendship Bench; ICER, incremental cost-effectiveness ratio; LHW, lay health worker; NNT, number needed to treat; YLD, year lived with disability.