IJCS | Volume 31, Nº4, July / August 2018

445 Cristo et al. Telerehabilitation for cardiac patients Int J Cardiovasc Sci. 2018;31(4)443-450 Review Article Table 2 - Risk of bias of the randomized clinical trials - Cochrane Collaboration’s tool Domain Studies Vieira, 2017 Brouwers, 2017 Piotrowicz, 2015 Bernocchi, 2017 Szalewska, 2015 Korzeniowska- kubacka, 2015 Piotrowicz, 2014 Selection bias 1. Sequence generation Low risk Low risk High risk Low risk High risk High risk High risk 2. Allocation concealment Low risk Low risk High risk Low risk High risk High risk High risk Performance bias 3. Blinding of study participants and personnel Uncertain risk High risk Uncertain risk High risk High risk High risk High risk Detection bias 4. Blinding of outcome assessors Uncertain risk High risk Uncertain risk Low risk High risk High risk High risk Attrition bias 5. Incomplete outcome data Low risk Low risk Low risk Low risk Low risk Low risk Low risk Reporting bias 6. Selective outcome reporting Low risk Low risk Low risk Low risk Low risk Low risk Low risk Other biases 7. Other sources of bias Low risk Low risk Low risk Low risk Low risk Low risk Low risk separately the articles that met the inclusion and exclusion criteria. In the next phase, each reviewer read the full articles that met the criteria presented in the abstract, and selected only those compatible with the criteria proposed for this systematic review. In case of doubt, a third reviewer would be consulted; however, in this study, there was no disagreement between the first two reviewers. Data extraction Two researchers were responsible for data extraction. The following characteristics were extracted from the studies: title, authors, publication year, name of the scientific journal of publication, publication form, keywords, geographical origin, study design, sample size, methods, study period, instrument used for telerehabilitation, other results and conclusions. In addition, the following data about the participants of each study were recorded: number, sex, age, interventions performed, rehabilitation time, outcomes. The risk of bias of the randomized clinical trials was assessed by using the Cochrane Collaboration’s tool (Table 2). Data analysis Data analysis was performed in a descriptive and qualitative form, being presented as figure and tables.