“…Illnesses such as measles or the flu were specifically excluded in the literal question, while both intentional and unintentional injuries were included. In accordance with suggestions from the peer-reviewed literature, we examined the following independent variables: gender, age, vigorous physical activity (VPA), VPA (outside school hours), smoking, alcohol misuse, physical fighting, bullying victimisation, bullying perpetrator, parental job, living with parents and self-assessed wealth (Acquah, Wilson & Doku, 2014;Celedonia et al, 2013;Garmy, Vilhjalmsson & Kristjansdottir, 2018). The relevant questions and examined variables and coding can be found in the appendix under the name 'Appendix 1'.…”