Table 2.

Search strategy (conducted on 5 January 2015)

Database	Search strategy
MEDLINE (n = 837)	1. exp Suicide/or suicid*.mp.
	2. exp Self-injurious behavior/or self-harm.mp.
	3. exp Body Mass Index/or body mass index.mp.
	4. BMI.mp.
	5. exp Body Weight/body weight.mp.
	6. exp Obesity/or obes*.mp.
	7. exp Overweight/or overweight.mp.
	8. 1 or 2
	9. 3 or 4 or 5 or 6 or 7
	10. 8 and 9
	11. limit 10 to humans
PsycINFO (n = 666)	1. exp Suicide/
	2. exp Attempted Suicide/or attempted suicide.mp.
	3. exp Suicidal Ideation/or suicidal ideation.mp.
	4. suicid*.mp.
	5. exp Self-Injurious Behavior/or self-harm.mp.
	6. exp Body Mass Index/or body mass index.mp.
	7. exp Body Weight/or body weight.mp.
	8. exp Obesity/or obes*.mp.
	9. BMI.mp.
	10. exp Overweight/or overweight.mp.
	11. 1 or 2 or 3 or 4 or 5
	12. 6 or 7 or 8 or 9 or 10
	13. 11 and 12
	14. limit 13 to human
EMBASE (n = 3688)	1. exp suicidal behavior/or suicid*.mp.
	2. exp automutilation/or self-harm*.mp.
	3. exp body mass/body mass index.mp.
	4. BMI.mp.
	5. exp body weight/body weight.mp.
	6. exp obesity/or obes*.mp.
	7. overweight.mp.
	8. 1 or 2
	9. 3 or 4 or 5 or 6 or 7
	10. 8 and 9
	11. limit 10 to human
CINAHL (n = 144)	1. (MH “Suicide+”) OR “suicid*”
	2. (MH “Self-Injurious Behavior”) OR “self-harm”
	3. (MH Body Mass Index) OR “body mass index”
	4. (MH “Body Weight+”) OR “body weight”
	5. (MH “Obesity+”) OR “obes*”
	6. “BMI”
	7. “overweight”
	8. 1 or 2
	9. 3 or 4 or 5 or 6 or 7
	10. 8 and 9 (limiters human)

BMI, body mass index.