Dietary intake, physical activity behaviours, and sedentary behaviour were assessed with frequency questions referring to a general week and were relevant to adult life [ 16].
Symptoms, general psychopathology, function and behaviour were assessed with a single rating on the first day in the PICU with the Positive and Negative Syndrome Scale (PANSS) for schizophrenia [ 17] with time criterion the last 24 hours, the Global Assessment Scale Split version (GAF-S), and the Brøset Violence Checklist (BVC) [ 18].
Physical activity and sedentary behaviour were assessed with three questions adapted from the Whitehall II study: 'Do you take part in any sports that are (vigorous/moderately energetic/mildly energetic) with response options of (more than once a week/once a week/one to three times a month/hardly ever or never)' (Marmot et al, 1991).
Suicidal behaviour was assessed with the 3rd version of the Composite International Diagnostic Interview (CIDI 3.0) [ 19].
75 76 Attitude towards PA behaviour is assessed with three items, 55 56 self-efficacy towards PA behaviour with five items out an existing questionnaire (Cronbach's α=0.82) 54 and two additional items.
Child behaviour was assessed with two parent-completed questionnaires; the Conners 3rd Edition ADHD Index (Conners 3 AI-parent) which screens for Attention Deficit Hyperactivity Disorder (ADHD), and the Strengths and Difficulties Questionnaire which screens for emotional and behaviour problems.
Smoking behaviour was assessed with the question, 'During the past 30 days, on how many days did you smoke?' The answer was dichotomised to 0 days and on one or more days.
Self-harming behaviour and suicidal behaviour was assessed with two questions: "Have you ever taken an overdose of pills or otherwise tried to harm yourself on purpose?" ("no", "yes, once", and "yes, more than once"), a question derived from the CASE study and has been used in several other studies [ 13, 20, 25, 26].
Health behaviour was assessed with questions on the use of alcohol and tobacco, frequency of drunkenness, amount of physical exercise, prior sporting activities, belonging to a sports club, participation in competitive sports, highest level achieved in school sports, self-assessed physical fitness, and opinion about the physical demands of a soldier.
For comparison with the Swiss population, health behaviours were assessed with standardised questions of the SHS.
Controlling behaviours were assessed with the Controlling Behaviour Scale Revised (CBS-R) [ 31, 32].
