Group allocation
0 = Physical first aid
1 = teen MHFA

School T1
1 = School 1
2 = School 2
3 = School 3
4 = School 4

1 = 2014
2 = 2015
3 = 2016

School and year (cluster-period)
1 = School 1 2014
2 = School 1 2015
3 = School 2 2014
4 = School 2 2015
5 = School 3 2015
6 = School 3 2016
7 = School 4 2015
8 = School 4 2016

1 = Pre course survey
2 = Post course survey
3 = 1 year follow-up survey

Intervention receivedT1
1 = teen MHFA
2 = PFA

Would you like to proceed with the survey? T1
1 = Yes
2 = No

What is your gender?T1
1 = Male
2 = Female
3 = Other term

In the last 12 months have you come across someone about your age (i.e. between
1 = Yes
2 = No
3 = Not sure
4 = I don't want to answer this question

Did you offer the person any help?T1
1 = Yes
2 = No
3 = Not sure

Dummy code of 'Did you offer the person any help?' T1
0 = No
1 = Yes/not sure

Dummy code of 'Did you come across someone needing PFA?' T1
0 = No
1 = Yes/Don't know

Recode of PFAgivenT1 where everyone has a code
0 = No/inappropriate PFA provided
1 = Appropriate PFA provided

Combination of EncounterPFAT3 and PFAgivenT3 to create trichotomous variable
1 = Did not encounter person needing PFA
2 = Encountered person needing PFA but did not offer/provide appropriate help
3 = Encountered person needing PFA and provided appropriate help

Appropriate send for help at T1
0 = No
1 = Yes

No reason for not helping given as a reason for not helping a peer at T1
0 = Reason not given
1 = Reason given