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 ...

Test-retest, the standard method used to investigate reliability of contingent valuation, is limited because when the time period between the two surveys is relatively short the study may exhibit ...

Please provide your email address to receive an email when new articles are posted on . BOSTON – Both tablet-based and website-based Melbourne Rapid Fields tests had high test-retest reliability, with ...