INTRODUCTION: Chronic kidney disease (CKD) is a major threat to public health, especially in low-income and lower middle-income countries, where resources for treating patients with advanced CKD are scarce. Although early CKD identification and intervention hold promise for reducing the burden of CKD and risk factors, it remains unclear if an uniform strategy can be applicable across all income groups. The aim of this scoping review is to synthesise available evidence on early CKD identification programmes in all world regions and income groups. The study will also identify efforts that have been made to use interventions and implementation of early identification programmes for CKD across countries and income groups. METHODS AND ANALYSIS: This review will be guided by the methodological framework for conducting scoping studies developed by Arksey and O'Malley. Empirical (Medline, Embase, Cochrane Library, CINAHL, ISI Web of Science and PsycINFO) and grey literature references will be searched to identify studies on CKD screening, early identification and interventions across all populations. Two reviewers will independently screen references in consecutive stages of title/abstract screening and then full-text screening. We will use a general descriptive overview, tabular summaries and content analysis on extracted data. ETHICS AND DISSEMINATION: The findings from our planned scoping review will enable us to identify items in early identification programmes that can be used in developing screening toolkits for CKD. We will disseminate our findings using traditional approaches that include open-access peer-reviewed publication, scientific presentations and a white paper (call to action) report. Ethical approval will not be required for this scoping review as the data will be extracted from already published studies.

Department of Internal Medicine and Subspecialties University of Yaounde 1 Yaounde Cameroon

Department of Medicine and Dentistry University of Alberta Edmonton Alberta Canada

Department of Medicine Charles University Praha Czech Republic

Department of Medicine Komfo Anokye Teaching Hospital Kumasi Ghana

Department of Medicine Nazarbaev Universitet Nur Sultan Kazakhstan

Department of Medicine The University of British Columbia Faculty of Medicine Vancouver British Columbia Canada

Department of Medicine The University of Tokyo Graduate School of Medicine Bunkyo ku Japan

Department of Nephrology Instituto Nacional de Cardiología Ignacio Chávez Mexico City Mexico

Division of Nephrology and Hypertension University of Cape Town Cape Town South Africa

DOPPS Program Arbor Research Collaborative for Health Ann Arbor Michigan USA

Global Operations Centre International Society of Nephrology Brussels Belgium

John W Scott Health Sciences Library University of Alberta Edmonton Alberta Canada

Nursing School Pontifícia Universidade Católica do Rio Grande do Sul Porto Alegre Brazil

Richard Bright Renal Unit North Bristol NHS Trust Westbury on Trym UK

The George Institute for Global Health India New Delhi Delhi India

UK Renal Registry Bristol UK

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Early Identification of CKD-A Scoping Review of the Global Populations