Table A13:
Cost–Utility Analysis, Sequential Approach: Internet-Delivered CBT, In-Person CBT, Usual Care for Major Depression, and Medication From Beginning of Intervention
| Strategy | Mean Costsa ($) | Mean QALYs | Incremental Costsb ($) | Incremental QALYsc | ICER, $/QALY gained |
|---|---|---|---|---|---|
| Unguided iCBT | 794.22 | 0.778 | – | – | |
| Usual care | 862.23 | 0.789 | – | – | |
| Group CBT | 2,132.44 | 0.817 | – | – | Extended Dominance |
| Guided iCBT | 2,188.82 | 0.827 | 1,328 | 0.04 | 33,397 |
| Individual CBT | 3,096.02 | 0.827 | 907 | 0.0001 | 9,216,211 |
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.