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Table 2 Number of participants who attended to every attribute for both conventional & CM alternatives combined, and each alternative alone (N = 32)

From: Lost in the crowd? Using eye-tracking to investigate the effect of complexity on attribute non-attendance in discrete choice experiments

Question Number attributes Health condition Alts combineda
# participants (%)
Conv alternative
# participants (%)
CM alternative
# participants (%)
1 3 joint 32 (100) 28 (88) 29 (91)
2 3 insomnia 28 (88) 24 (75) 20 (63)
3 4 joint 32 (100) 26 (81) 24 (75)
4 4 insomnia 25 (78) 24 (75) 18 (56)
5 5 joint 20 (63) 13 (41) 14 (44)
6 6 insomnia 18 (56) 13 (41) 12 (38)
7 8 joint 17 (53) 13 (41) 12 (38)
8 8 insomnia 16 (50) 15 (47) 13 (41)
  1. Abbreviations: Alts alternatives, conv conventional, CM complementary medicine, # number
  2. aFor a participant to have attended to an attribute, they had to have one or more fixations on that attribute, irrespective of whether they looked at the levels of the attribute in both choices
  3. Note: The ‘neither of these’ option did not have any attributes specified and is excluded from this analysis