Characteristics of cognitive debriefing subjects
| Demographic information | n=20 (%) |
| Gender | |
| Female | 10 (50%) |
| Male | 10 (50%) |
| Age (years) | |
| Mean | 55.35 |
| Range | 28–70 |
| Education | |
| Not educated/before primary school | 1 (5%) |
| Primary school | 2 (10%) |
| Junior Secondary School | 3 (15%) |
| Higher Secondary School | 8 (40%) |
| Postsecondary colleges (non-degree programme) | 5 (25%) |
| Universities/master or above | 1 (5%) |
| Employment | |
| Employed | 10 (50%) |
| Housewife | 2 (10%) |
| Unemployed/retired | 8 (40%) |