Table 1 Epidemiology of the included systematic reviews

Publication year, N (%)

 2017

 2018

 2019

 Missing/other

8 (3.1)

1443 (55.62)

107 (41.3)

1 (0,3)

Country of origin, N (%)

 United States

 United Kingdom

 China

 Australia

 Canada

 The Netherlands

 Germany

 Other

43 (16.6)

42 (16.2)

29 (11.2)

23 (8.9)

21 (8.1)

9 (3.5)

6 (2.3)

86 (33.2)

Review type, N (%)

 Systematic

 Scoping

 Integrative

 Health technology assessment

 Missing/other

247 (95.4)

7 (2.7)

3 (1.2)

2 (0.8)

2 (0.8)

Population, N (%)

 Adult

 Pediatric

 Both/Unclear

 Animal

131 (50.6)

29 (11.2)

96 (37.0)

3 (1.2)

Focus of systematic review, N (%)^a

 Therapeutic

 Epidemiology

 Diagnosis

 Other^a

120 (46.3)

82 (31.7)

201 (7.70.8)

37 (14.32)

Cochrane review, N (%)

 Yes

31 (12.0)

 No

228 (88.0)

Update, N (%)

 Yes

28 (10.8)

 No

231 (89.2)

Registered protocol, N (%)

 Yes

94 (36.3)

 No

165 (63.7)

Alternate screening methodologies used, N (%)

 Crowdsourcing

2 (0.7)

 Computer assisted screening

1 (0.3)