From: Should we search Chinese biomedical databases when performing systematic reviews?
Review characteristic | Whitinget al.2010 [12] | Gaoet al.2012 [11] |
---|---|---|
Primary aim | To compare the accuracy of anti-CCP antibodies and rheumatoid factor in diagnosing rheumatoid arthritis in patients with early symptoms of the disease | To determine the accuracy of anti-CCP antibody in diagnosis of patients with rheumatoid arthritis in a Chinese population |
Databases searched | MEDLINE, Embase, Science Citation Index, BIOSIS, ISI Web of Science, System for Information on Grey Literature in Europe, Zetoc, National Technical and Information System, Dissertation Express | MEDLINE, CNKI |
Timeframe for searches | Inception to September 2009 | January 2000 to June 2010 |
Language restrictions | None | English and Chinese |
Number of studies included | ||
Total | 151a | 118 |
English language | 130 | 4 |
Chinese Language | 5 | 114 |
Other non-English languages | 20 | 0 |
Summary estimate of sensitivity (95% CI) | 68% (65 to 71)b | 65% (65 to 66) |
Summary estimate of specificity (95% CI) | 95% (94 to 96)b | 95% (95 to 96) |