Table 2

Outcome measures

Outcome measureQuestionResponsesSourceVariable
Cyberbullying victimisationHave you been bullied through mobile phone use or on the internet in the last 3 months?No I haven’tAdapted from Daphne measure of cyberbullyingBinary any yes/no
Yes, once or twice
Yes, two or three times a month
Yes, about once a week
Yes, several times a week or more
Cyberbullying perpetrationHave you ever bullied anyone else using your mobile phone or using the internet?No I haven’tAdapted from Daphne measure of cyberbullyingBinary any yes/no
Yes, once or twice
Yes, two or three times a month
Yes, about once a week
Yes, several times a week or more
Student-reported observations of other students perpetrating aggressive behaviours at schoolWhich of the following have you seen happen at this school in the last 3 months of schoolBoys fightingNewScore out of 7 (point per item)
Girls fighting
Someone threatening someone
A student trying to hurt another student
Someone robbing money or a mobile phone
Someone letting off a firework
Someone carrying a knife
Perpetration of antisocial behaviour in or outside schoolDuring the last 3 months of school
Did you ever carry a knife or other weapon with you for protection or in case it was needed in a fight?NoAdapted from ESYTC measure of antisocial behaviourScore out of 4 (4 items with each no/yes 0–1)
Did you use force, threats or a weapon to steal money or something else from somebody?Yes
Did you damage or destroy property that did not belong to you on purpose (eg, windows, cars or street lights)?
Did you ever set fire or try to set fire to something on purpose (eg, bus shelter, shop, etc)?
Participation in school disciplinary proceduresDuring the last 3 months of school how often did these things happen to you because of something you had done wrong?
The school got in touch with my parents by letter or telephone about an incident0 timesESYTC measure of school disciplineScore out of 18 (6 items with each scored 0–3)
I got a punishment and my parents were informed about that1 or 2 times
I was given detention3 or 4 times
I was sent to the head of year, deputy head or head teacher for my behaviour5 or more times
I was put on a conduct/behaviour sheet
I was given extra homework to do
TruancyDuring the last 3 months of school have you skipped/bunked off school?NoRipple measure of truancyBinary yes/no
Yes
E-cigarette useWhich of the following best describes you?I currently smoke e-cigarettesNewBinary—ever/never
I have tried e-cigarettes in the past 12 months but do not currently smoke them
I have tried e-cigarettes longer than 12 months ago but do not currently smoke them
I have never tried e-cigarettes
Perceived lack of school safetyDo you feel safe at this school?All of the timeHSE measure of school safetyBinary— some of the time/never versus other options
Most of the time/some of the time
Never
  • ESYTC, Edinburgh Study of Youth Transitions; HSE, Healthy School Ethos.