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. 2024 Jan 2;13:11. doi: 10.1186/s13643-023-02404-0

Table 2.

The possible sources of publication bias. OR odds ratio

Factor Risk for publication bias OR p Value
High risk Low risk
Language restriction Only English 12 20 1.35 0.899
Other languages too 4 9
Sources other than bibliographic databases (citation searching not included) Searched 3 6 0.83 0.922
Not searched 15 25
Sources other than bibliographic databases (citation searching included) Searched 13 22 1.06 0.976
Not searched 5 9
Number of databases searched Mean (SD) 3.72 (0.89) 3.84 (1.13) - 0.692