Association between systemic immune-inflammation index and chronic bronchitis: NHANES 2001-2018.

ABSTRACT: The systemic immune-inflammation index (SII) is a newly identified marker of inflammation., and the relationship between chronic bronchitis (CB) and inflammation is closely associated. However, the influence of SII on CB remains unclear at present.This cross-sectional study was conducted using data from individuals with complete SII and CB records from the 2001-2018 National Health and Nutrition Examination Survey (NHANES). Binary weighted logistic regression was employed to investigate the relationship between SII and CB risk. Additionally, restricted cubic spline regression models and segmented regression models were used to examine nonlinear relationships and threshold effects. Receiver operating characteristic (ROC) curves were adopted to evaluate the predictive value of SII for CB. St

SUBMITTER: He L 

PROVIDER: S-EPMC12019561 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature