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A nonlinear relationship between dietary inflammatory index and stroke among US adults with metabolic
1Department of Gastroenterology.
Background:
Some studies have found that high dietary inflammatory index (DII) increases stroke risk, but previous studies have mostly been conducted in the general population, and the exact relationship between DII and stroke in patients with metabolic dysfunction-associated steatotic liver disease (MASLD) is not clear.
Methods:
This cross-sectional study utilized data from the National Health and Nutrition Examination Survey (2009-2016) to investigate the association between the DII and stroke. DII was computed according to established methods. Participants were categorized into tertiles of DII (Q1-Q3). Multivariate weighted logistic regression analysis, smooth curve fitting, and subgroup analysis were employed to explore this relationship. Subgroup analyses were conducted based on demographic and clinical variables.
Results:
A total of 2426 individuals were enrolled in our study. The overall prevalence of stroke in the study population was 4.66%. The smooth curve fitting analysis indicated a J-shaped relationship between DII and stroke among individuals with MASLD. In multivariate weighted logistic regression analysis, the odds ratio (OR) of DII is 1.17 (95% CI: 1.03-1.38) for stroke, with a turning point of 1.89. After the turning point, the OR (95% CI) was 1.22 (1.08-2.56). In subgroup analysis, DII still increased the risk of stroke independently.
Conclusion:
Our study highlighted a J-shaped association between DII and stroke in adults with MASLD from USA.
