One-to-one versus group setting for conducting computer-assisted TTO studies: findings from pilot studies in England and the Netherlands.
Koonal K Shah, Andrew Lloyd, Mark Oppe, Nancy J Devlin
European Journal of Health Economics | Published : 2013
We compare two settings for administering time trade-off (TTO) tasks in computer-assisted interviews (one-to-one, interviewer-led versus group, self-complete) by examining the quality of the data generated in pilot studies undertaken in England and the Netherlands. The two studies used near-identical methods, except that in England, data were collected in one-to-one interviews with substantial amounts of interviewer assistance, whereas in the Netherlands, the computer aid was used as a self-completion tool in group interviews with lesser amounts of interviewer assistance. In total, 801 members of the general public (403 in England; 398 in the Netherlands) each completed five TTO valuations o..View full abstract