Background A Systematic search for literature is the basis of systematic review for development of trustworthy clinical practice guidelines (CPGs). Recently, standard method of literature search has been established. However, it is not clear what sources of information are used for development of CPGs in Japan.
Objectives The aim is to clarify what sources of information are used for development of CPGs in Japan.
Methods We reviewed Japanese CPGs that have been selected by MINDS (Medical Information Network Distribution Service) through process of screening and evaluation in 2011-2013, and abstracted description about sources of information used in these CPGs in February 2012.
Results A total of 88 Japanese CPGs selected by MINDS in 2011-2013. 65 (73.9%) CPGs used Medline, 29 (33.0%) used Cochrane database of systematic reviews, and 51 (58.0%) used Ichushi. Related CPGs was used in 30 (34.1%) CPGs. Hand search was used in 56 (63.6%) CPGs. There was no clear description of source of information in 18 (20.5%) CPGs.
Discussion Medline was used in most CPGs, and Cochrane database of systematic reviews was used in a relatively small number of CPGs. Ichushi, which is a database of domestic medical literature information in Japan, was used in about a half of Japanese CPGs.
Implications for Guideline Developers/Users It is necessary for further study to clarify what sources of information should be used for development of trustworthy CPGs.
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