Table 20:
Cost–Utility Analysis, Sequential Approach: Internet-Delivered CBT, In-Person CBT, and Usual Care for Major Depression
| Strategy | Mean Costs, $a | Mean QALYs | Incremental Costs, $a,b | Incremental QALYsc | ICER, $/QALY Gaineda |
|---|---|---|---|---|---|
| Unguided iCBT | 381.62 | 0.777 | – | – | – |
| Usual care | 409.40 | 0.787 | 27.78 | 0.0092 | 3,004 |
| Ontario coach-based iCBT | 989.321 | 0.806 | 579.92 | 0.0197 | 29,387 |
| Group CBT | 1,690.15 | 0.817 | 700.83 | 0.0105 | 66,836 |
| Individual CBT | 2,654.08 | 0.827 | 963.93 | 0.0096 | 100,312 |
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 (strategy of individual CBT) – average cost (strategy of group CBT).
c
Incremental effect = average effect (strategy of individual CBT) – average effect (strategy of group CBT).
Note: Results may appear incorrect because of rounding.