Association between the C-reactive protein-albumin-lymphocyte index and incident depression in patients with chronic obstructive pulmonary disease: a prospective cohort study from the UK biobank
Depression is a prevalent and underrecognized comorbidity in chronic obstructive pulmonary disease (COPD) that worsens outcomes. The C-reactive protein–albumin–lymphocyte (CALLY) index, a composite immune-nutritional biomarker, has demonstrated prognostic value in various chronic conditions, but its prospective ass...