|Outcome||Question (text in brackets is the response indicating behavior)|
|Unintended teenage pregnancy||Did you ever accidentally get pregnant or accidentally get someone else pregnant before you were aged 18 years? (Yes)|
|Early sexual initiation||How old were you the first time you had sexual intercourse? (<16 years)|
|Smoking||In terms of smoking tobacco, which of the following best describes you? (I smoke daily)|
|Binge drinking||How often do you have 6 or more standard drinks on one occasion (Weekly or daily or almost daily)a|
|Cannabis use||How often, if ever, have you taken the following drugs…cannabis? (any level of use)|
|Heroin/crack cocaine use||How often, if ever, have you taken the following drugs… heroin/crack cocaine? (Any level of use)|
|Violence perpetration||How many times have you physically hit someone in the past 12 months? (Any frequency)|
|Violence victimization||How many times have you been physically hit in the past 12 months? (Any frequency)|
|Incarceration||How many nights have you ever spent in prison, in jail or in a police station? (Any number of nights)|
|Poor diet||On a normal day, how many portions of fruit and vegetables (excluding potatoes) would you usually eat (one portion is roughly one handful or a full piece of fruit such as an apple)? (<2 portions)|
|Low physical activity||Usually, how many days each week do you take part in at least 30 minutes of physical activity that makes you breathe quicker, like walking quickly, cycling, sports or exercise? (<3 days)|
aQuestions on alcohol consumption were drawn from the AUDIT C tool, and participants were provided with information on what constitutes a standard drink (UK = 10 mg of alcohol).
Bellis et al.
Bellis et al. BMC Medicine 2014 12:72 doi:10.1186/1741-7015-12-72