Hazard ratio and adjusted (age and sex) hazard ratio in patients with paraquat poisoning with different comorbidities.

Abbreviations: HR: Hazard ratio; RF: Respiratory failure; AKI: Acute kidney injury; HD: Hemodialysis; DM: Diabetes mellitus; HTN: Hypertension; CVA: Cerebral vascular accident; CHF: Congestive heart failure; CAD: Coronary artery disease; COPD: Chronic obstructive pulmonary disease. *Cox regression analysis among different treatment groups adjusted for age and sex or not adjusted were used for analysis.