Table A11:
Cost–Utility Analysis, Sequential Approach: Internet-Delivered CBT, In-Person CBT, and Usual Care for Major Depression, Lower Delivery Costs of In-Person CBT
| Strategy | Mean Costsa ($) | Mean QALYs | Incremental Costsb($) | Incremental QALYsc | ICER $/QALY gained |
|---|---|---|---|---|---|
| Unguided iCBT | 274.62 | 0.778 | – | – | |
| Usual care | 409.40 | 0.789 | – | – | – |
| Group CBT | 1,582.54 | 0.817 | Dominated | ||
| Guided iCBT | 1,668.91 | 0.827 | 1,259 | 0.04 | 39,661 |
| Individual CBT | 2,467.08 | 0.827 | – | – | Dominated |
Abbreviations: CBT, cognitive behavioural therapy; iCBT, internet-delivered CBT; ICER, incremental cost-effectiveness ratio; QALY, quality-adjusted life-year.
a
All costs in 2018 Canadian dollars. No discounting was done because of the 12-month time horizon.
b
Incremental cost = average cost (guided CBT) – average cost (usual care).
c
Incremental effect = average effect (guided CBT) – average effect (usual care).
Note: Results may appear incorrect due to rounding.