Richard A. Iles|John M. Rose
Stated Choice design comparison in a developing country: recall and attribute nonattendance
Griffith University|University of South Australia
experimental designs constitute vital component stated choice aka discrete choice experiment studies however exists limited empirical evaluation statistical benefits stated choice sc experimental designs employ nonzero prior estimates constructing nonorthogonal constrained designs paper statistically compares performance contrasting sc experimental designs effect respondent literacy patterns attribute nonattendance ana across fractional factorial orthogonal efficient designs also evaluated study uses real sc design model consumer choice primary health care providers rural north india total 623 respondents sampled across four villages uttar pradesh india comparison orthogonal efficient sc experimental designs based several measures appropriate comparison designs respective efficiency measure made using derror results standardised akaike information criteria compared designs across recall periods comparisons control stated inferred ana coefficient standard error estimates also compared added complexity efficient sc design theorised elsewhere reflected higher estimated amounts ana among illiterate respondents however controlling ana using stated inferred methods consistently shows efficient design performs statistically better modelling sc data orthogonal efficient design shows modelfit efficient design outperform orthogonal design using 14day recall period performance orthogonal design respect standardised aic modelfit better longer recall periods 30days 6months 12months used effect efficient designs cognitive demand apparent among literate illiterate respondents although pronounced among illiterate respondents study empirically confirms relaxing orthogonality constraint sc experimental designs increases information collected choice tasks subject accuracy nonzero priors design correct specification real sc recall period