Table 1. Overview of Study Procedures
Procedures for Initial Group (First 38 Participants)Procedures for Verification Group (Final 18 Participants)
Demographic data collectedSame
S-TOFHLA numeracy testSame
Questions about current health-related activities and sources and sufficiency of informationSame
Questions about risk perception: What are you most worried about in coming X years and why?Same
Rank health risks using card sort (were not asked to rank mortality if estimated risk is high)Same
    (1) Reviewed personalized risk information, randomly presenting either bar chart or crowd charts; mortality risk censored if too high(1) Presented bar charts first; if did not clearly understand, presented crowd charts as well
    (2) Asked for reactions to risk projections: comprehension, personal relevance, preferred format(2) Asked to rank second set of risk cards as UKPDS model predicted them
    (3) Presented with and reviewed other set of risk representations (crowd or bar charts)(3) If could not properly rank risk cards, presented crowd charts if not already done, reviewed data, encouraged to try again
Given second set of cards and asked to rank based on current feelings about risk with original ranking and risk charts in viewIf able to rank second set of cards correctly, given third set of cards to rank based on current feelings, with first 2 card sets and risk charts in view
Asked about reasons for changing/not changing rankings, why they did or did not believe or match computer estimates, whether they are motivating for change, and suggestions for improvementSame
  • S-TOFHLA, Short Test of Functional Literacy in Adults; UKPDS, UK Prospective Diabetes Study.