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- Title
The non-linear relationship between serum albumin and diabetic retinopathy in type 2 diabetes mellitus: a secondary analysis based on a cross-sectional study.
- Authors
Zeng, Guo-Qiang; Yao, Yu-Feng; Zhong, Jian-Bo; Zhang, Yi; Ye, Bai-Kang; Dou, Xiao-Yan; Cai, Li
- Abstract
Background: Most studies had shown a linear relationship between serum albumin (sALB) and the prevalence of diabetic retinopathy (DR). Thus, the purpose of this study is to investigate whether their relationship is non-linear. Methods: We included 426 patients with type 2 diabetes who were hospitalized in Guangdong Provincial People's Hospital from December 2017 to November 2018. The outcome was the prevalence of DR. A two-piecewise logistics regression model was performed to identify the non-linear relationship between sALB and the prevalence of DR. The inflection point was calculated to determine the saturation effect through the maximum likelihood ratio and a recursive algorithm. Results: DR was diagnosed in 167 of 426 type 2 diabetic patients. The relationship between sALB and DR was nonlinear. When sALB was less than 38.10 g/L, a significant negative association was observed (OR = 0.82; 95% CI, 0.72–0.94; P = 0.0037), while no significant association was observed when sALB was greater than 38.10 g/L (OR = 1.12; 95% CI, 0.92–1.35; P = 0.2637). Conclusions: The relationship between sALB and the prevalence of DR is non-linear. sALB is negatively associated with the prevalence of DR when sALB is less than 38.10 g/L. Our findings need to be confirmed by further prospective research.
- Subjects
TYPE 2 diabetes; DIABETIC retinopathy; SERUM albumin; SECONDARY analysis; CROSS-sectional method; HOOKAHS
- Publication
BMC Ophthalmology, 2024, Vol 24, Issue 1, p1
- ISSN
1471-2415
- Publication type
Article
- DOI
10.1186/s12886-024-03348-2