The first four
main categories used a 5-point Likert scale, with options ranging from
‘strongly disagree’ (code 1) to ‘strongly agree’ (code 5) and from ‘absolutely
unimportant’ (code 1) to ‘very important’ (code 5). Item response indicated
that the questionnaire had a good fit, with Cronbach's alpha 0.88. The
questionnaire was pilot-tested by 9 experts in the field of CHC or experts
on overweight, and was designed to be completed in 20 minutes.