Table 2.

Search terms and total number of abstracts identified per source ^a)

Database	Search String	Number of abstracts
CENTRAL b)	Suicid*’ or ‘self-harm’ or ‘self-poisoning’ and ‘Trial’ or ‘intervention’ or ‘prevention’	12,236
PUBMED	“
PSYCINFO	“
Additional sources (hand searched)		7
	Total	12,250
	After removal of duplicates	11,600

^a)All searches were conducted until July 30 2013.

^b)Cochrane Central Register of Controlled Trials.