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Participant characteristics.
| Characteristics | Categories | Number of participants |
|---|---|---|
| Gender | Male | 8 |
| Age (34–55) | Mean age 45 | 8 |
| Civil status | Single/divorced | 1 |
| Partner/married | 7 | |
| Education | Secondary school | 6 |
| Bachelor’s degree or higher | 2 | |
| Occupational status | Employee | 8 |
| Daytime | 4 | |
| Shift work | 4 | |
| Habitat | Rural | 3 |
| Urban | 5 | |
| Children/adolescents | Age | 4–16 |
