Table 2.
Individual and contextual factors
| Individual factors | Response Options | Recoded |
| Age | Continuous | |
| Height (self-report) | Body Mass Index |
2 categories Normal weight Overweight and obesity |
| Weight (self-report) | ||
| Contextual factors | ||
| Family factors | ||
| Family Affluence Scale | Sum = 0–9 | |
| No. of cars | “No” (0); “One” (1); “Two or more” (2) |
dichotomised High (3rd quantile) / Medium-low (1st and 2nd quantiles) |
| Own bedroom | “No”(0), “Yes” (1) | |
| Holiday with family | “Not at all” (0), “Once” (1), “Twice” (2), “More than twice” (3) | |
| No. of computers at home | “None” (0), “One” (1), “Two” (2), “More than two”(3) | |
| Family structure | ||
| “Check all the people who live in the home where you live all or most of the time.” | “mother”, “father”, “stepmother”, “stepfather”, “grandmother”, “grandfather”, “I live in a foster home”, “other.” |
dichotomised Living with both parents / Other family typology Ref: [10] |
| Family communication | ||
| “How easy it is to talk to the following persons about things that really bother you”. | “very easy”, “easy”, “difficult”, “very difficult”, “don’t have or see.” |
dichotomised Good communication with both parents (or only parent) / Other Ref: [10] |
| Mother | ||
| father | ||
| School factors | ||
| School attachment | ||
| “How do you feel about school at present.” | I like it a lot”, “I like it a bit”, “I don’t like it very much”, “I don’t like it at all”, |
dichotomised Like / Dislike Ref: [10] |
| Academic achievement | ||
| “What does your class teacher(s) think about your school performance compared to your classmates”. | “very good”, “good”, “average”, “below average”, |
dichotomised Good / Average or below |
| Peers factors | ||
| No. of evenings a week spent out with friends | 0–7 | |
| Violent behaviour and victimisation | ||
| How often / many times have you |
dichotomised Yes / No |
|
| Taken part in bullying others in the last 2 months | “I haven’t”, “Once or twice”, “2 or 3 times a month”, “once a week”, “several times a week.” | |
| Being bullied at school in the last 2 months | ||
| Participated in a physical fight in the past 12 months | “I haven’t”, “One time”, “Two times”, “Three times”, “Four times or more.” | |