The geriatric nutrition risk index is longitudinally associated with incident Sarcopenia: evidence from a 5-year prospective cohort.

"Declarations Ethical statementsThe research complied with the current laws of China. The study was approved by the Ethical Committee of Sichuan University West China Hospital and adhered to the principles of the Declaration of Helsinki. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding This study was supported by the following grants: Chinese National Science & Technology Pillar Program (2020YFC2005600); Sichuan Science and Technology Program (2021YFS0136); National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University (Z2023LC008); 1.3.5 project for disciplines of excellence–Clinical Research Incubation Project, West China Hospital, Sichuan University (19HXFH012); 1.3.5 project for disciplines of excellence, West China Hospital, Sichuan University (ZYJC21005)."

"The present study belonged to the West China Health and Aging Trend (WCHAT) study, an ongoing project launched in 2008 and registered on the Chinese Clinical Trial Registry (ChiCTR1800018895). Briefly speaking, community-dwelling participants aged ≥ 50 years were recruited from various areas of west China at baseline (in 2018) based on pre-established eligibility and exclusion criteria, and they were followed up annually either through on-site visits (in 2019, 2021, 2022 and 2023) or by telephone (in 2020). Questionnaire survey, physical examinations and laboratory examinations were conducted for the on-site follow-ups. The project received approval from the Ethical Committee of Sichuan University West China Hospital and adhered to the principles of the Declaration of Helsinki, with written informed consent obtained from all participants or their guardians prior to the project initiation. Additional details about the cohort profile were presented in previous publications []."