Figure 1From: Predictive score for mortality in patients with COPD exacerbations attending hospital emergency departments Death in exacerbation of chronic obstructive pulmonary disease: construction of continuous and categorical scores and relation with different outcomes. ICU: Intensive Care Unit, IMV: Invasive mechanical ventilation, IRCU: Intermediate Respiratory Care Unit, LT-HOT: Long-term home oxygen therapy, NIMV: Noninvasive mechanical ventilation. Superscript letters indicated statistical significant differences among the DeCOPD risk classes for the outcomes displayed.Back to article page