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Table 1 Basic characteristics of the included protocols

From: A descriptive analysis of the characteristics and the peer review process of systematic review protocols published in an open peer review journal from 2012 to 2017

Protocol characteristics n = 544
Publication year  
 2012 3.9%
 2013 10.3%
 2014 17.0%
 2015 19.5%
 2016 22.8%
 2017 26.7%
Country (most common)  
 Canada 32.2%
 UK 26.1%
 Other 22.6%
 Australia 7.4%
 Germany 7.0%
 USA 4.8%
Topic area of SR  
 Therapy (treatment, prevention) 44.1%
 Other (i.e. methodology) 27.0%
 Epidemiology (i.e. prevalence) 22.6%
 Diagnosis 4.2%
 Prognosis 2.0%
Source of funding of the SR  
 Non-profit 62.9%
 For-profit/mixed 2.4%
 No funding 18.6%
 Not reported/unclear 16.2%
Number of authors  
 Mean (SD) 6.5 (3.6)
 Median (IQR) 6 (4–8)
Registered in PROSPERO (n = 485; 89.2%)  
 Before submission / acceptance 87.4%
 After submission / acceptance 2.5%
 Same day 10.1%
  1. Abbreviations: SR Systematic review; SD Standard deviation; IQR Interquartile range