Economic evaluation of an experience sampling method intervention in depression compared with treatment as usual using data from a randomized controlled trial

Table 4 Results of base-case and sensitivity analyses of the cost-utility and cost-effectiveness analyses: willingness to pay when compared with both control conditions

	Level of willingness to pay when ESM-I is more cost effective than		Percentage at WtP threshold^a
	treatment as usual	pseudo-intervention	Percentage at WtP threshold^a
HDRS	€	€
Base-case analysis	3000	4000
Different GP cost calculation	3000	4000
Health care perspective	1500	3750
Complete cases	2250	3000
NOT controlling for baseline costs	1250	0^b
QALY	€	€	%
Base-case analysis	31, 500	40, 500	46%
Dutch instead of UK tariff	32, 500	43, 000	44%
Different GP cost calculation	30, 500	39, 500	45%
Health care perspective	16, 500	36, 000	64%
Complete cases	23, 500	30, 500	65%
NOT controlling for baseline costs	11, 500	0^b	58%

^aThe probability that ESM-I is most cost-effective at the willingness-to-pay threshold of €50,000
^bA value of €0 indicates that ESM-I is dominant compared with the other intervention, i.e., ESM-I shows more improvement in outcomes at lower costs compared with the other treatment

ISSN: 1471-244X