Figure 3

Agreement between abstract and ClinicalTrials.gov register on masking by study role. Bars show percent of abstract-ClinicalTrials.gov pairs that did not provide information on masking or blinding (black), agree (dark gray), or disagree (light gray), or where information was provided in the ClinicalTrials.gov record but not the conference abstract (white) on masking of study participants, persons administering the treatment, or persons measuring outcomes. Masking was categorized as present or not present. CT.gov = ClinicalTrials.gov.