Geneva, Jan. 12 -- International Clinical Trials Registry received information related to the study (ISRCTN91743566) titled 'A randomized controlled trial of a web-based patient decision aid for COVID-19 vaccination among adults in Canada' on Dec. 16, 2025.

Study Type: Interventional

Study Design: Allocation: Randomized controlled trial Masking: Open (masking not used) Control: Active Assignment: Parallel Purpose: Treatment

Primary Sponsor: Universite Laval

Condition: COVID-19 vaccination decision-making Other

Intervention: The study is a Randomized Controlled Trial (RCT) with three parallel arms. Participants are allocated 1:1:1 to one of the three arms via electronic simple randomization concealed within Qualtrics. Arms & treat...