Table 1. Coverage of Journal Articles by Bibliographic Databases.
| Bibliographic database | Article language, No. (%) | |||||
|---|---|---|---|---|---|---|
| English (n = 368) | Chinese (n = 102) | All (N = 470) | ||||
| Indexed | Unindexed | Indexed | Unindexed | Indexed | Unindexed | |
| English bibliographic databases | ||||||
| PubMed | 357 (97.0) | 11 (3.0) | 22 (21.6) | 80 (78.4) | 379 (80.6) | 91 (19.4) |
| Embase | 364 (98.9) | 4 (1.1) | 24 (23.5) | 78 (76.5) | 388 (82.6) | 82 (17.4) |
| CENTRAL | 348 (94.6) | 20 (5.4) | 24 (23.5) | 78 (76.5) | 372 (79.1) | 98 (20.9) |
| Chinese bibliographic databases | ||||||
| SinoMed | NA | NA | 102 (100) | 0 | NA | NA |
| CNKI | NA | NA | 66 (64.7) | 36 (35.3) | NA | NA |
| VIP Data | NA | NA | 100 (98.0) | 2 (2.0) | NA | NA |
| Wanfang Data | NA | NA | 101 (99.0) | 1 (1.0) | NA | NA |
Abbreviations: CENTRAL, Cochrane Central Register of Controlled Trials; CNKI, China National Knowledge Infrastructure; NA, not applicable.