Additional supporting information may be found online in the Supporting Information section at the end of the article. How to cite this article: Kollias A, Stambolliu E, Kyriakoulis KG, Gravvani A, Stergiou GS. Unattended versus attended automated office blood pressure: Systematic review and meta-analysis of studies using the same methodology for both methods. J Clin Hypertens. 2019;21:148-155. https://doi.