Bech, Mickael; Gyrd-Hansen, Dorte; Kjær, Trine; … - In: Health Economics 16 (2007) 5, pp. 513-529
In the stated preference method called graded pairs comparisons respondents are asked to rate the intensity of their preference for their preferred alternative in a pairwise comparison of alternatives. Econometricians anticipate that the additional information will improve statistical efficiency...