CRP and Hypertension: This study investigated the association between C-reactive protein (CRP) and nutritional risk using three hierarchical models: Model 1 (crude), Model 2 (adjusted for sex, age, smoking, alcohol consumption, systolic/diastolic blood pressure), and Model 3 (further adjusted for respiratory failure, diabetes, hypertension, kidney disease, cardiovascular/cerebrovascular diseases, and oxygen partial pressure variation).