| Characteristics | Number of participants |
| Male | 6 |
| Female | 19 |
| Parents | 21 |
| Not parents | 3 |
| Not known | 1 |
| Fieldwork sites | |
| North Wales (site A) | 4 |
| North Wales (site B) | 4 |
| Merseyside (site C) | 3 |
| Merseyside (site D) | 2 |
| Merseyside (site E) | 1 |
| Merseyside (site F) | 2 |
| Greater Manchester (site G) | 4 |
| London (site H) | 5 |