It's not just what you do, it's the way that you do it: the effect of different payment card formats and survey administration on willingness to pay for health gain.
A general population sample of 314 Australian respondents were randomly allocated to complete a contingent valuation survey administered by face-to-face or telephone ('phone-mail-phone') interview. Although the telephone interview was quicker to complete, no significant difference was found in values obtained through either method. Within each sub-sample, respondents were also randomly allocated to the three different versions of the payment card (PC) questionnaire format: values listed from high-to-low, values listed from low-to-high and values randomly shuffled. The high-to-low version resulted in significantly higher values than the other versions. Further analyses indicate that the randomly shuffled PC version may produce the most 'valid' values.
Smith
Richard D
RD
Health Economics Group, School of Medicine, Health Policy and Practice, University of East Anglia, Norwich, UK. richard.smith@uea.ac.uk
D000328:Adult; D001315:Australia; D005260:Female; D005382:Financing, Personal; D019538:Health Care Surveys / Q000379:methods*; D006801:Humans; D007407:Interviews as Topic; D008297:Male; D008875:Middle Aged; D010342:Patient Acceptance of Health Care; D011177:Postal Service; D012044:Regression Analysis; D015203:Reproducibility of Results; D018709:Statistics, Nonparametric; D011795:Surveys and Questionnaires; D013689:Telephone; D026712:Value of Life / Q000191:economics*