Table 1.

Questionnaire details.

Demographics Questionnaire
	Questions	Answer choices
1	Are you at school right now, while you are taking the survey?	Yes, no
2	Are you a student?	Yes, no
3	What gender do you identify with?	Female, male, other, prefer not to say
4	What is your age in years?	10 years or less, 11 years, 12 years, 13 years, 14 years, 15 years, 16 years, 17 years, 18 years, 19 years, 20 years or more
5	What is your school?	7, 8, 9, 10, 11, 12, other
6	What grade are you in?	Select from a list of all Ft McMurray schools with any classes in grades 7-12
7	What school were you in for grade 6?	Select from a list of all Ft McMurray schools with grade 6
Impact of Fire Questionnaire
	Questions	Answer choices
1	Were in you or near Fort McMurray during any part of the 2016 wildfire?	Yes, no
2	Did you evacuate because of the fire?	Yes, no
3	Was your home destroyed by the fire?	Yes, no
4	Did you see the fire in person?	Yes, no
5	What school are you in?	Select from a list of all Ft McMurray schools with any classes in grades 7-12
6	What grade are you in?	7, 8, 9, 10, 11, 12, other
Patient Health Questionnaire (PHQ-A, Depression Symptoms)
	Questions	Answer choices
	Over the past 2 weeks, how often have you been bothered by any of the following problems?
1	Feeling down, depressed, irritable or hopeless	Not at all, Several days, More than half the days, Nearly every day
2	Little interest or pleasure in doing things?	Not at all, Several days, More than half the days, Nearly every day
3	Trouble falling or staying asleep, or sleeping too much	Not at all, Several days, More than half the days, Nearly every day
4	Poor appetite, weight loss, or overeating?	Not at all, Several days, More than half the days, Nearly every day
5	Feeling tired, or having little energy?	Not at all, Several days, More than half the days, Nearly every day
6	Feeling bad about yourself-or that you are a failure or that you have let yourself or your family down	Not at all, Several days, More than half the days, Nearly every day
7	Trouble concentrating on things, such as school work, reading or watching television	Not at all, Several days, More than half the days, Nearly every day
8	Moving or speaking so slowly that other people could have noticed. Or the opposite-being so figety or restless that you have been moving around a lot more than usual	Not at all, Several days, More than half the days, Nearly every day
9	Thoughts that you would be better off dead, or of hurting yourself in some way	Not at all, Several days, More than half the days, Nearly every day
	Questions 10 and 11 asked only if answer to question 9 was "Several days", "More than half the days", or "Nearly everday"
10	Has there been a time in the past month when you have had serious thoughts about ending your life?	Yes, no
11	Have you ever, in your WHOLE LIFE, tried to kill yourself or made a suicide attempt?	Yes, no
Hospital Anxiety and Depression Scale (HADS, Anxiety Symptoms)
	Questions	Answer choices
	Tick the box beside the reply that is closest to how you have been feeling in the past week. Don’t take too long over you replies: your immediate is best.
1	I feel tense or wound up:	Most of the time; A lot of the time; From time to time, occasionally; Not at all
2	I get a sort of frightened feeling as if something bad is about to happen:	Very definitely and quite badly; Yes, but not too badly; A little, but it doesn’t worry me; Not at all
3	Worrying thoughts go through my mind:	A great deal of the time; A lot of the time; From time to time, but not too often; Only occasionally
4	I can sit at ease and feel relaxed:	Definitely; Usually; Not often; Not at all
5	I get a sort of frightened feeling like ‘butterflies’ in the stomach:	Not at all; Occasionally; Quite often; Very often
6	I feel restless and have to be on the move:	Very much indeed; Quite a lot; Not very much; Not at all
7	I get sudden feelings of panic:	Very often indeed; Quite often; Not very often; Not at all
Child PTSD Symptom Scale (CPSS)
	Questions	Answer choices
	Instructions to participant: Below is a list of problems that kids sometimes have after experiencing an upsetting event. Read each one carefully and circle the number (0–3) that best describes how often that problem has bothered you IN THE LAST 2 WEEKS.
1	Please select your most distressing event:	2016 Fort McMurray wildfire; Death of someone close to you; Injury that you suffered; Physical assault against you; Sexual assualt; Other
2	How long as it been since the event (in years)?	less than 1 month; 2-5 months; 6-11 months; 1 year; 2 years; 3-5 years; 6-10 years; 11 or more years
	Below is a list of problems that kids sometimes have after experiencing an upsetting event. Read each one carefully and circle the number (0–3) that best describes how often that problem has bothered you IN THE LAST 2 WEEKS.
3	Having upsetting thoughts or images about the event that came into your head when you didn’t want them to	Not at all or only at one time; Once a week or less/ once in a while; 2 to 4 times a week/ half the time; 5 or more times a week/almost always
4	Having bad dreams or nightmares	Same as above
5	Acting or feeling as if the event was happening again (hearing something or seeing a picture about it and feeling as if I am there again)	Same as above
6	Feeling upset when you think about it or hear about the event (for example, feeling scared, angry, sad, guilty, etc)	Same as above
7	Having feelings in your body when you think about or hear about the event (for example, breaking out into a sweat, heart beating fast)	Same as above
8	Trying not to think about, talk about, or have feelings about the event	Same as above
9	Trying to avoid activities, people, or places that remind you of the traumatic event	Same as above
10	Not being able to remember an important part of the upsetting event	Same as above
11	Having much less interest or doing things you used to do	Same as above
12	Not feeling close to people around you	Same as above
13	Not being able to have strong feelings (for example, being unable to cry or unable to feel happy)	Same as above
14	Feeling as if your future plans or hopes will not come true (for example, you will not have a job or getting married or having kids)	Same as above
15	Having trouble falling or staying asleep	Same as above
16	Feeling irritable or having fits of anger	Same as above
17	Having trouble concentrating (for example, losing track of a story on the television, forgetting what you read, not paying attention in class)	Same as above
18	Being overly careful (for example, checking to see who is around you and what is around you)	Same as above
19	Being jumpy or easily startled (for example, when someone walks up behind you)	Same as above
CRAFFT Questionnaire (Drugs/Alcohol/Tabacco)
	Questions	Answer choices
	During the past 12 months, did you:
1	Drink any alcohol (more than a few sips)?	Yes, no
2	Smoke any marijuana or hashish?	Yes, no
3	Use anything else to get high?	Yes, no
4	Have you ever ridden in a CAR driven by someone (including yourself) who was “high” or had been using alcohol or drugs?	Yes, no
	Questions 5-9 asked only if “yes” to one or more of questions 1-3.
5	Do you ever use alcohol or drugs to RELAX, feel better about yourself, or fit in?	Yes, no
6	Do you ever use alcohol or drugs while you are by yourself, or ALONE?	Yes, no
7	Do you every FORGET things you did while using alcohol or drugs?	Yes, no
8	Do your FAMILY or FRIENDS ever tell you that you should cut down on your drinking or drug use?	Yes, no
9	Have you ever gotten into TROUBLE while you were using alcohol or drugs?	Yes, no
Tobacco Use Questionnaire
	Questions	Answer choices
	During the past month:
1	Do you smoke tobacco products?	Yes, no
2	Do you use smokeless tobacco products?	Yes, no
Rosenberg Self-Esteem Scale
	Questions	Answer choices
1	On the whole, I am satisfied with myself.	Strongly agree, Agree, Disagree, Strongly disagree
2	At times, I think I am no good at all.	Strongly agree, Agree, Disagree, Strongly disagree
3	I feel that I have a number of good qualities.	Strongly agree, Agree, Disagree, Strongly disagree
4	I am able to do things as well as most other people.	Strongly agree, Agree, Disagree, Strongly disagree
5	I feel I do not have much to be proud of.	Strongly agree, Agree, Disagree, Strongly disagree
6	I certainly feel useless at times.	Strongly agree, Agree, Disagree, Strongly disagree
7	I feel that I’m a person of worth, at least on an equal plane with others.	Strongly agree, Agree, Disagree, Strongly disagree
8	I wish I could have more respect for myself.	Strongly agree, Agree, Disagree, Strongly disagree
9	All in all, I am inclined to feel that I am a failure.	Strongly agree, Agree, Disagree, Strongly disagree
10	I take a positive attitude toward myself.	Strongly agree, Agree, Disagree, Strongly disagree
Kidscreen Questionnaire (Quality of Life)
	Questions	Answer choices
	Thinking about the last week:
1	Have you physically felt fit and well?	Not at all, slightly, moderately, very, extremely
2	Have you felt full of energy?	Never, seldom, quite often, very often, always
3	Have you felt sad?	Never, seldom, quite often, very often, always
4	Have you felt lonely?	Never, seldom, quite often, very often, always
5	Have you had enough time for yourself?	Never, seldom, quite often, very often, always
6	Have you been able to do the things that you want to do in your free time?	Never, seldom, quite often, very often, always
7	Have your parent(s) treated you fairly?	Never, seldom, quite often, very often, always
8	Have you had fun with your friends?	Never, seldom, quite often, very often, always
9	Have you got on well at school?	Not at all, slightly, moderately, very, extremely
10	Have you been able to pay attention?	Never, seldom, quite often, very often, always
11	In general, how would you say your health is?	Excellent, very good, good, fair, poor
Child and Youth Resilience Measure (CYRM-12)
	Questions	Answer choices
	To what extent do the sentences below describe you? Select an answer for each statement.
1	I am able to solve my problems without harming myself or others	Not at all; A little; Some-what; Quite a bit; A lot
2	I know where to go in the community to get help	Not at all; A little; Some-what; Quite a bit; A lot
3	Getting an education is important to me	Not at all; A little; Some-what; Quite a bit; A lot
4	I try to finish what I start	Not at all; A little; Some-what; Quite a bit; A lot
5	I have people I look up to	Not at all; A little; Some-what; Quite a bit; A lot
6	My parents/caregivers know a lot about me	Not at all; A little; Some-what; Quite a bit; A lot
7	My family stands by me during difficult times	Not at all; A little; Some-what; Quite a bit; A lot
8	My friends stand by me during difficult times	Not at all; A little; Some-what; Quite a bit; A lot
9	I have opportunities to develop skills that will be useful later in life	Not at all; A little; Some-what; Quite a bit; A lot
10	I am treated fairly in my community	Not at all; A little; Some-what; Quite a bit; A lot
11	I feel I belong at school	Not at all; A little; Some-what; Quite a bit; A lot
12	I enjoy my cultural and family traditions	Not at all; A little; Some-what; Quite a bit; A lot