Table 3.

Difficulty of survey

Question	Levels	Frequency	Percentage
Was the survey easier or harder than most surveys?	Easier	147	14.6
	The same	440	43.6
	Harder	391	38.7
	Could not say	32	3.2
Was the presentation of health states clear?	Very clear	235	23.3
	Clear	445	44.1
	Neither clear nor unclear	189	18.7
	Unclear	106	10.5
	Very unclear	35	3.5
How difficult it was to choose between pairs of health states?	Very easy	108	10.7
	Easy	232	23.0
	Neither easy or difficult	302	29.9
	Difficult	314	31.1
	Very difficult	54	5.3
Did you have a strategy for choosing between the health states?	Considered all aspects	187	18.5
	Considered most of the aspects	228	22.6
	Considered only aspects in yellow	320	31.7
	Considered only a few aspects	161	15.9
	Other	43	4.3
	Did not have a strategy	71	7.0