Table 3.

Decisions or processes related to “Selecting information to identify”

2: Selecting information to identify
2.1: Selecting publication formats	2.2: Selecting electronic sources to search
2.1.1: Searching for journal articles	2.2.1: Searching bibliographic databases
2.1.2: Searching for ongoing studies	2.2.2: Searching full-text databases
2.1.3: Searching for nongovernment reports	2.2.3: Searching specialized registers
2.1.4: Searching for books or book chapters	2.2.4: Searching Google Scholar
2.1.5: Searching for conference proceedings	2.2.5: Searching trial registries
2.1.6: Searching for dissertations	2.2.6: Searching the Internet
2.1.7: Searching for correspondence	2.2.7: Searching specific websites
2.1.8: Searching for electronic publications ahead of print	2.2.8: Searching social media platforms
2.1.9: Searching for language-specific information	2.2.9: Costs of searching
2.1.10: Searching for government reports
2.1.11: Searching for unpublished work
2.1.12: Searching for errata or corrections
2.1.13: Excluding predatory journals