Below a CHG index of 5.59, each 1-unit rise sharply raises stroke risk in depressed adults.
Association between the cholesterol-high-density lipoprotein-glucose index and new-onset stroke in middle-aged and older adults with depressive symptoms: a longitudinal cohort analysis.
a 1-unit higher CHG index (below 5.59) more than doubles stroke risk
In the fully adjusted Cox model, for every 1-unit increase in the CHG index, the risk of new-onset stroke increased by 48% (HR = 1.48, 95% CI: 1.15-1.90, P = 0.003).
However, the restricted cubic spline analysis revealed a significant non-linear relationship (D1 test P = 0.005), with the inflection point occurring at a CHG index of 5.59.
Multivariable logistic regression yielded a consistent significant association (OR = 1.53, 95% CI: 1.16-2.03, P = 0.003).
Subgroup analysis and multiple sensitivity analyses (quartile analysis, exclusion of early stroke events, median binary classification analysis) all supported the robustness of the main findings.
Among middle‑aged and older Chinese adults with depressive symptoms, the CHG index shows a significant non-linear positive association with the risk of new-onset stroke, and the risk increases sharply when the index is below 5.59.
The CHG index may serve as a potential indicator for the early risk of stroke in this high-risk population.