Abstract: Objective：To investigate the prevalence and influencing factors of abnormal renal function among individuals aged 65
and above in Yuxi City. Methods: A systematic sampling method was adopted to select 10 280 elderly people aged 65 and above from
the Yunnan Provincial Basic Public Health Service Information Management System as the research subjects. The binary Logistic re⁃
gression model was used to analyze the related influencing factors of abnormal renal function in the elderly population. Results: The
prevalence of abnormal renal function among individuals aged 65 and above in Yuxi City was 13.79%. Binary Logistic regression analy⁃
sis showed that for the elderly ( the 75-84 years old group OR=3.031, 95%CI: 2.674-3.436, and the 85 years old and above group OR=
6.893, 95%CI: 5.531-8.590), obesity (OR=1.399, 95%CI: 1.062-1.841), former smoking (OR=1.337, 95%CI: 1.037-1.725), hyperten⁃
sion (OR=1.790, 95%CI: 1.575-2.035), diabetes (OR=1.286, 95%CI: 1.101-1.503), dyslipidemia (OR=1.364, 95%CI: 1.199-1.551),
anemia (OR=2.595, 95%CI: 2.140-3.145) were risk factors for abnormal renal function, while regular exercise (OR=0.674, 95%CI:
0.584-0.777) was a protective factor. Conclusion: Age, obesity, exercise habits and multiple chronic diseases are all associated with
abnormal renal function in the elderly population. Renal function monitoring should be strengthened for high-risk individuals. Adopt⁃
ing healthy lifestyle habits may help preserve glomerular filtration rate and reduce the risk of abnormal renal function.

Key words: abnormal renal function, glomerular filtration rate, prevalence, influencing factors, individuals aged 65 and above