Figure 3.

DASI in Predicting Future Risk of 720-Day Death From Any Cause

Patients stratified into DASI quartiles and referenced to fourth quartile (highest self-reported exercise capacity). Adjusted hazard ratios (aHR) illustrated on logarithmic scale. Adjustments made for age (years), sex, systolic blood pressure (mm Hg), peripheral oxygen saturation (SpO₂, %), leg edema on presentation, history of hypertension, diabetes, coronary artery disease, atrial fibrillation, heart failure, chronic obstructive pulmonary disease/asthma, natural logarithm of blood urea nitrogen (mmol/L), levels of serum creatinine (μmol/L), hemoglobin (g/L) and natural logarithm of N-terminal pro B-type natriuretic peptide (ng/L), sodium (mmol/L), intake of angiotensin-converting enzyme inhibitors/angiotensin receptor blockers (ACEI/ARB), beta-blockers, and diuretics on admission. Squares represent HRs; horizontal lines, 95% confidence intervals; vertical line, a HR of 1.00. BUN = blood urea nitrogen; COPD = chronic obstructive pulmonary disease; DASI = Duke Activity Status Index; NT-proBNP = N-terminal pro-B-type natriuretic peptide.