Table 4.

Utilities (partworths) for all levels (n = 1030)

Attribute	Level	Utilities Mean	Utility Interval	SD
Availability	Prescription drug	135.9		61.5
	Over-the-counter drug	-64.0	199.9	36.1
	Internet purchase drug	-71.9	7.9	32.9
Way of taking the medicine	Cream/Gel	1.0		11.1
	Oral	-1.0	2.0	11.1
Frequency	As needed	24.7		6.4
	Once a day	-13.5	38.2	8.4
	Twice a day	-7.6	5.9	6.8
	3–4 times a day	-3.6	4	15.2
Mobility improvement	Expect 75% mobility improvement	18.5		8.4
	Expect 50% mobility improvement	-0.9	19.4	5.5
	Expect 25% mobility improvement	-17.6	16.7	9.7
Pain reduction	Expect 75% pain reduction	16.6		9.6
	Expect 50% pain reduction	-1.4	18	6.1
	Expect 25% pain reduction	-15.1	13.7	9.7
Risk of gastric ulcer	No risk of gastric ulcer	93.2		31.4
	Low risk of gastric ulcer	-2.2	95.4	25.6
	Moderate risk of gastric ulcer	-32.0	29.8	22.1
	High risk of gastric ulcer	-59.0	27.0	23.6
Risk of addiction	No risk of addiction	100.8	107.2	35.2
	Low risk of addiction	-6.4		26.6
	Moderate risk of addiction	-36.1	29.7	23.5
	High risk of addiction	-58.3	22.2	19.3
Risk of kidney and liver impairment	No risk of kidney and liver impairment	98.6		35.4
	Low risk of kidney and liver impairment	-2.4	101.0	22.1
	Moderate risk of kidney and liver impairment	-38.1	35.7	24.0
	High risk of kidney and liver impairment	-58.1	20.0	24.1
Risk of heart attacks and strokes	No risk of heart attack and stroke	92.8		35.3
	Low risk of heart attack and stroke	-6.7	99.5	22.6
	Moderate risk of heart attack and stroke	-33.4	26.7	20.9
	High risk of heart attack and stroke	-52.8	19.4	23.1
Cost	Fully covered by the insurance	27.5		13.8
	Partially covered by the insurance	-9.3	36.8	6.2
	Not covered by the insurance	-18.2	8.9	9.6