Report rate for the minimum required 20 items of WHO TRDS in Chinese trials registered at WHO primary registries (n (%))
| The minimum required 20 items of WHO TRDS | http://clinicaltrials.gov (n=743) | ChiCTR (n=428) | ISRCTN (n=55) | ANCTR (n=21) | |
| No | Items | ||||
| 1 | Primary register and trial ID | 743 (100) | 428 (100) | 55 (100) | 21 (100) |
| 2 | Date of registration in primary register | 743 (100) | 428 (100) | 55 (100) | 21 (100) |
| 3 | Secondary ID | 743 (100) | 10 (2) | 15 (27) | 2 (10) |
| 4 | Source(s) of monetary or material support | 743 (100) | 412 (96) | 55 (100) | 21 (100) |
| 5 | Primary sponsor | 743 (100) | 428 (100) | ? | 21 (100) |
| 6 | Secondary sponsor(s) | 232 (31) | 254 (59) | ? | 14 (71) |
| 7 | Contact for public queries | 367 (47) | 428 (100) | 55 (100) | 21 (100) |
| 8 | Contact for scientific queries | 690 (93) | 428 (100) | 55 (100) | 21 (100) |
| 9 | Public title | 743 (100) | 428 (100) | 55 (100) | 21 (100) |
| 10 | Scientific title | 679 (92) | 428 (100) | 15 (27) | 21 (100) |
| 11 | Countries of recruitment | 724 (97) | 428 (100) | 55 (100) | 21 (100) |
| 12 | Health condition(s) or problem(s) studied | 743 (100) | 428 (100) | 55 (100) | 21 (100) |
| 13 | Intervention(s) | 674 (91) | 426 (99) | 55 (100) | 21 (100) |
| 14 | Key inclusion and exclusion criteria | 743 (100) | 428 (100) | 55 (100) | 21 (100) |
| 15 | Study type | 743 (100) | 406 (95) | 55 (100) | 21 (100) |
| 16 | Date of first enrolment | 718 (97) | 428 (100) | 55 (100) | 21 (100) |
| 17 | Target sample size | 704 (95) | 428 (100) | 50 (91) | 21 (100) |
| 18 | Recruitment status | 743 (100) | 428 (100) | 55 (100) | 21 (100) |
| 19 | Primary outcome(s) | 663 (89) | 426 (99) | 55 (100) | 21 (100) |
| 20 | Key secondary outcomes | 573 (77) | 322 (76) | 55 (100) | 21 (100) |
ANCTR, Australian New Zealand Clinical Trial Registry; ChiCTR, Chinese Clinical Trial Registration Center; ISRCTN, International Standard Randomised Controlled Trial Number Register; TRDS, Trial Registration Data Set.
? This registry only set up sponsor entry, lack of access to primary and secondary sponsor data.