Table 3:

Interventions and Comparators Evaluated in the Primary Economic Model

Intervention	Comparator	Patient Population
1.Face-to-face individual CBT by physician: CBT, 14 1-hour weekly sessions CBT, 14 1-hour weekly sessions plus sertraline, 50 mg/day	Usual care No CBT, no pharmacotherapy Sertraline, 50 mg/day	Mild MDD Moderate to severe MDD
2.Face-to-face group CBT by physician: CBT, 14 2-hour weekly sessions CBT, 14 2-hour weekly sessions plus sertraline, 50 mg/day	Usual care No CBT, no pharmacotherapy Sertraline, 50 mg/day	Mild MDD Moderate to severe MDD
3.Face-to-face individual CBT by nonphysician: CBT, 14 1-hour weekly sessions CBT, 14 1-hour weekly sessions plus sertraline, 50 mg/day	Usual care No CBT, no pharmacotherapy Sertraline, 50 mg/day	Mild MDD Moderate to severe MDD
4.Face-to-face group CBT by nonphysician: CBT, 14 2-hour weekly sessions CBT, 14 2-hour weekly sessions plus sertraline, 50 mg/day	Usual care No CBT, no pharmacotherapy Sertraline, 50 mg/day	Mild MDD Moderate to severe MDD

Abbreviations: CBT, cognitive behavioural therapy; MDD, major depressive disorder.