The feasibility, validity and reliability of the Time Trade-Off (TTO) and Visual Analogue Scale (VAS) methods in obtaining preference values for health states were compared in a random sample of the ...
In an international research project, a meta analysis of multitrait-multimethod matrices was used to evaluate the effects of characteristics of survey measurement instruments on the quality of survey ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback