|
Category
|
Subcategory
|
Number (percentage)
|
|---|
|
Year of registration
|
2010
|
2 (4)
|
|
2011
|
2 (4)
|
|
2012
|
4 (9)
|
|
2013
|
3 (6)
|
|
2014
|
6 (13)
|
|
2015
|
8 (17)
|
|
2016
|
7 (15)
|
|
2017
|
9 (19)
|
|
2018
|
3 (6)
|
|
2019
|
3 (6)
|
|
Registries
|
ANZCTR
|
4 (9)
|
|
ClinicalTrials.gov
|
33 (70)
|
|
ChiCTR
|
1 (2)
|
|
IRCT
|
4 (9)
|
|
ISRCTN
|
2 (4)
|
|
JPRN
|
1 (2)
|
|
NTR
|
1 (2)
|
|
ReBEC
|
1 (2)
|
|
Observational studies a
|
Yes
|
10 (21)
|
|
No
|
37 (79)
|
|
Indexed in CENTRAL
|
Yes
|
31 (66)
|
|
No
|
16 (34)
|
|
Included in Cochrane reviews that searched trial registries other than ClinicalTrials.gov or ICTRP
|
Yes
|
6 (13)
|
|
No
|
41 (87)
|
|
Included in Cochrane reviews which types of intervention were
|
Pharmacological
|
12 (26)
|
|
Non-pharmacological
|
33 (70)
|
|
Both
|
2 (4)
|
- Abbreviations: CENTRAL Cochrane Central Register of Controlled Trials, ANZCTR Australian New Zealand Clinical Trials Registry, ChiCTR Chinese Clinical Trial Registry, ICTRP International Clinical Trials Registry Platform, IRCT Iranian Registry of Clinical Trials, ISRCTN International Standard Randomized Controlled Trial Number Register, JPRN Japan Primary Registries Network, NTR The Netherlands National Trial Register, ReBEC Brazilian Clinical Trials Registry
- a Cochrane reviews whose inclusion criteria were limited to controlled trials were included. However, some of these Cochrane reviews also included observational studies as ongoing or unpublished studies
