Cost-utility analysis of telephone-based cognitive behavior therapy in chronic obstructive pulmonary disease (COPD) patients with anxiety and depression comorbidities: an application for willingness to accept concept
2019
ABSTRACTBackground: This study evaluated the cost-utility of telephone-based cognitive behavioral therapy (TB-CBT) (experimental arm) in comparison with a placebo-befriending (control arm) program in COPD participants with mild to severe depression and/or anxiety.Methods: The decision rule was based on willingness-to-pay if there is an increased unit of effectiveness (a quality-adjusted life year [QALY] gain) and an increase in cost, and willingness-to-accept (WTA) if there is a reduced unit of effectiveness (a QALY loss) and decrease in cost (a cost-saving).Results: TB-CBT group was associated with a reduction in the incremental cost of AUS−$407.3 (p < 0.001, SE:34.1) plus a negative, nonsignificant incremental QALY gain of −0.008 (SE:0.011) per patient compared to control group. The point estimate of the mean incremental cost-utility ratio was AUS$50,284.0 cost saving per QALY sacrificed (the high value associated with small QALY value in the denominator). Ninety-five percent CI was AUS$13,426 cost sacr...
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