Description of study population with each group divided in those who completed questionnaire (completers) and those who did not complete questionnaires (non-completers).

Data is from responses to demographic questions in the questionnaire on randomization.
Older participants (66 years, ±16 vs. 61 years ±16, p = 0.02) and Maori (66% vs. 29%, p<0.001) were less likely to complete the questionnaire, however there were no differences between randomized groups. The total completion rate was higher for the simplified ICF + booklet (75%) compared to the standard ICF’s (64%, p = 0.05) and the short ICF + booklet (62%, p = 0.04).