Trajectories of Body Mass Index and Waist Circumference in Relation to the Risk of Cardiac Arrhythmia: A Prospective Cohort Study.

"Conflicts of Interest The authors declare no conflicts of interest."

"This study is supported by Research Center of Prevention and Treatment of Senescence Syndrome, School of Medicine Zhejiang University (2022010002), “Pioneer” and “Leading Goose” R&D Programs of Zhejiang Province (2023C03163), and Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province (2020E10004). The funders had no role in the study design; data collection, analysis, or interpretation; in the writing of the report; or in the decision to submit the article for publication."

"The data utilized in this study were acquired from the Kailuan study, a longitudinal cohort study established between June 2006 and October 2007. In the initial 2006 wave survey, a total of 155,418 employees and retirees from the Kailuan Group, a coal mining company in Tangshan, China, were invited to participate, of which 101,510 participants aged over 18 years provided informed consent and completed the investigation. The participants underwent biennial follow-up assessments. Comprehensive data including participant demographic characteristics, disease history, lifestyles, and biomedical indicators were collected via questionnaires, physical examinations, and laboratory tests. Further elaboration regarding the overall study design of the Kailuan study has been detailed elsewhere [,]. The Kailuan study was granted ethical approval by the Ethics Committee of the Kailuan Medical Group (registration number: ChiCTR2000029767) and adhered to the principles of the Declaration of Helsinki. Institutional Review Board Statement: The Kailuan study was approved by the Ethics Committee of the Kailuan Medical Group (Registration number: ChiCTR2000029767; Date: 2020-02-13) and followed the Declaration of Helsinki. "