Cost-effectiveness and cost-utility of a Web-based or print-delivered tailored intervention to promote physical activity among adults aged over fifty: an economic evaluation of the Active Plus intervention

Table 5 Sensitivity analyses comparing 3 groups of the Active Plus intervention at the 12-month follow-up

	Control group		Print-delivered intervention (PB & PE)		Web-based intervention(WB & WE)		ICER^b	CEAF^dand probability highest NMB
	Costs^a	Effect	Costs^a	Effect	Costs^a	Effect
PA (MET hours/week)	2760 (5301)	-2.2	2384 (4483)	2.9	2789 (5992)	0.2	Print dominant	Print at any threshold
PA (MET hours/week)	2760 (5301)	-2.2	2384 (4483)	2.9	2789 (5992)	0.2	Print dominant	Print: 96%
QALY-EQ-5D-3L^c	2739 (5293)	0.884	2365 (4427)	0.879	2800 (6054)	0.886	79196 (Print vs. C)	< €65000 Print, > €65000 C
QALY-EQ-5D-3L^c	2739 (5293)	0.884	2365 (4427)	0.879	2800 (6054)	0.886	79196 (Print vs. C)	Print: 65%
	Control group		Basic intervention (PB & WB)		Environmental intervention (PE & WE)		ICER ^b	CEAF ^d and probability highest NMB
	Costs ^a	Effect	Costs ^a	Effect	Costs ^a	Effect
PA (MET hours/week)	2760 (5301)	-2.2	2771 (5375)	1.9	2400 (5203)	1.2	503 (Environment vs. Basic)	< €550 Environment, > €550 Basic
PA (MET hours/week)	2760 (5301)	-2.2	2771 (5375)	1.9	2400 (5203)	1.2	503 (Environment vs. Basic)	Basic: 68%
QALY-EQ-5D-3L^c	2739 (5293)	0.884	2754 (5381)	0.879	2415 (5206)	0.886	Environment dominant	Environment at any threshold
QALY-EQ-5D-3L^c	2739 (5293)	0.884	2754 (5381)	0.879	2415 (5206)	0.886	Environment dominant	Environment: 75%

PB = printed basic intervention, PE = printed environmental intervention, WB = Web-based basic intervention, WE = Web-based environmental intervention, C = control group.
^aIn Euros; ^bcalculated according to the formula ICER = (Ci-Cc)/(Ui-Uc); ^cBased on the Dutch algorithm for the EuroQol (EQ-5D-3L) scores; ^dCost-effectiveness acceptability frontiers (CEAF); ^eProbability of highest net monetary benefit (NMB) based on WTP = €20,000.

ISSN: 1479-5868