Watson 1999b.

Methods	Journals were handsearched cover‐to‐cover by one person. MEDLINE, EMBASE and PsycINFO were searched for the years 1992‐1996.
Data	5 journals: American Journal of Psychiatry, Archives of General Psychiatry, Behaviour Research & Therapy, British journal of Psychiatry, Journal of Consulting & Clinical Psychology (1992‐1996).
Comparisons	Handsearch vs MEDLINE, EMBASE and PsycINFO using a simple search (using indexing terms) and a complex search (using free text and indexing terms).
Outcomes	A total of 37 RCTs were identified; 34 RCTs were identified by HS, MEDLINE identified 36 RCTs, EMBASE identified 28 RCTs, PsycINFO identified 24 RCTs.
Notes	All 37 RCTs were full reports.

Abbreviations:

HS: handsearching. 
 ES: electronic searching. 
 'cover‐to‐cover': the full contents of each journal were handsearched (i.e., each journal article, review, letter, meeting abstract, etc were checked). 
 RCT: randomized controlled trial as described by the authors of the study. 
 CCT: controlled clinical trial as described by the authors of the study. 
 Cochrane HSSS: Cochrane highly sensitive search strategy.