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Table 1 Number and type of CONSORT extensions (n = 197 manuscripts)

From: Impact of a web-based tool (WebCONSORT) to improve the reporting of randomised trials: results of a randomised controlled trial

  WebCONSORT(n = 94) Control(n = 103)
Number of extensions selecteda
 No extension 34 (36%) 29 (28%)
 1 extension 37 (40%) 53 (52%)
 2 extensions 21 (22%) 20 (19%)
 3 extensions 1 (1%) 1 (1%)
 4 extensions 1 (1%) 0
Type of extension selectedb
 Non-pharmacological extension 43 50
 Cluster extension 10 9
 Non-inferiority extension 9 8
 Pragmatic extension 20 16
 Herbal extension 2 13
 Acupuncture extension 2 0
 Extension correctly matchedc
  Yes 72 (77%) 82 (80%)
  No 22 (23%) 21 (20%)
Reason for mismatchd
 Author wrongly selected:   
  Pragmatic extension 4 5
  Cluster extension 6 4
  Non-inferiority extension 3 5
  Non-pharmacological extension 2 1
 Author failed to select:   
  Non-pharmacological extension 10 7
  Non-inferiority extension 1 0
  1. aNumber of extension(s) selected by the author when registering their manuscript on the WebCONSORT randomisation site
  2. bType of extension(s) selected by the author when registering their manuscript on the WebCONSORT randomisation site
  3. cWhether extension(s) selected by the author when registering their manuscript was assessed as being the appropriate extension
  4. dThere may be more than one reason for a miss match between the extension selected by the author and the extension which should have been selected