Table 2

CONSORT item distribution

CONSORT items1994–1995 (%)1999–2000 (%)2004–2005 (%)2009–2010 (%)2014–2015 (%)
1) Is there a description of the method used to generate the random allocation sequence?7.722.250.062.2 77.8
2.1) Is there a description of the method used to implement the random allocation sequence?026.841.342.2 53.3
2.2) Is there clarification about whether the sequence was concealed until interventions were assigned?3.920.043.548.9 51.1
3.1) Is there a statement about blinding of participants or open trial?38.540.050.057.8 75.6
3.2) Is there a statement about blinding of practitioner or open trial?38.535.650.053.3 77.8
3.3) Is there a statement about blinding outcome assessor?26.931.141.353.3 75.6
4) Are baseline demographic and clinical characteristics of each group presented?53.668.9 89.1 84.488.9
5) Is there a statement of whether or not the analysis was by ‘intention-to-treat’?3.920.032.624.4 37.8