Category | Number of records | Percentage of records (%) |
All trials | ||
Linked publications | 428 | 12.8 |
Unlinked publications | 2911 | 87.2 |
Trials linked to publications | ||
Completed trials* | 300 | 70.1 |
Uncompleted trials | 128 | 29.9 |
Registries with links to publications† | ||
ClinicalTrials.gov | 312 | 72.9 |
ISRCTN | 67 | 15.7 |
ANZCTR | 18 | 4.2 |
DRKS | 12 | 2.8 |
CRIS | 10 | 2.3 |
JPRN | 8 | 1.9 |
NTR | 1 | 0.2 |
*‘Completed’ is refers to the recruitment status, not the completion date of a trial. The number of trials that completed the recruitment of participants was 300.
†Eight registries, namely ChiCTR, EU-CTR, IRCT, PACTR, REBEC, CTRI, SLCTR and TCTR, have no links to publications or resulting data and, therefore, are not listed in the table.
ANZCTR, Australian New Zealand Clinical Trials Registry; ChiCTR, Chinese Clinical Trial Registry; CRIS, Clinical Research Information Service-Republic of Korea; CTRI, Clinical Trials Registry-India; DRKS, German Clinical Trials Register; EU-CTR, EU Clinical Trials Register; IRCT, Iranian Registry of Clinical Trials; ISRCTN, International Standard Randomized Controlled Trial Number Register; JPRN, Japan Primary Registries Network; NTR, Netherlands National Trial Register; PACTR, Pan African Clinical Trial Registry; REBEC, Brazilian Clinical Trials Registry; SLCTR, Sri Lanka Clinical Trials Registry; TCTR, Thai Clinical Trials Register.