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Objective <p>This study aimed to investigate the associations between the Dietary Inflammatory Index (DII) and cardiovascular (CV)/non-CV mortality in hypertensive individuals, and to explore sex-specific differences.</p> Methods <p>Sixteen thousand six hundred twenty-three individuals with hypertension were selected from the National Health and Nutrition Examination Survey (NHANES) from 2001 to 2018 and divided into groups of males and females. We used multivariate Cox proportional hazards models, competing risk regression, restricted cubic splines (RCS), propensity score matching (PSM), and decision curve analysis (DCA) to evaluate the associations between the DII and CV/non-CV mortality.</p> Results <p>After fully adjusting for potential confounders, individuals with the highest DII score had a 35 percent higher CV mortality than those with the lowest DII score, observed in females but not in males. Across the cohort, there was a significant association between DII and non-CV mortality. RCS results showed that DII had an S-shaped association with CV mortality and a J-shaped association with non-CV mortality in hypertensive individuals.</p> Conclusions <p>In patients with hypertension, we found sex differences in the association between DII and CV mortality. High DII was only associated with increased CV mortality in females with hypertension, but not in males. Higher DII was also associated with increased non-CV mortality.</p>

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Sex-specific associations of the Dietary Inflammatory Index with cardiovascular and non-cardiovascular mortality in hypertensive adults: a cohort study

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年6月3日

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  • Zhang Youqi,
  • Yan Meng,
  • Ji Liu,
  • Yang Dawei,
  • Wu Jianjun,
  • Yang Fan

摘要

Objective

This study aimed to investigate the associations between the Dietary Inflammatory Index (DII) and cardiovascular (CV)/non-CV mortality in hypertensive individuals, and to explore sex-specific differences.

Methods

Sixteen thousand six hundred twenty-three individuals with hypertension were selected from the National Health and Nutrition Examination Survey (NHANES) from 2001 to 2018 and divided into groups of males and females. We used multivariate Cox proportional hazards models, competing risk regression, restricted cubic splines (RCS), propensity score matching (PSM), and decision curve analysis (DCA) to evaluate the associations between the DII and CV/non-CV mortality.

Results

After fully adjusting for potential confounders, individuals with the highest DII score had a 35 percent higher CV mortality than those with the lowest DII score, observed in females but not in males. Across the cohort, there was a significant association between DII and non-CV mortality. RCS results showed that DII had an S-shaped association with CV mortality and a J-shaped association with non-CV mortality in hypertensive individuals.

Conclusions

In patients with hypertension, we found sex differences in the association between DII and CV mortality. High DII was only associated with increased CV mortality in females with hypertension, but not in males. Higher DII was also associated with increased non-CV mortality.