Fig. 1
From: Long-term outcomes following first short-term clinically important deterioration in COPD
Proportions of patients experiencing CIDs in the TORCH study. CID, clinically important deterioration; CID+, presence of a CID within 6 months of enrollment into the study; CID-, absence of a CID within 6 months of enrollment into the study; COPD, chronic obstructive pulmonary disease; FEV1, forced expiratory volume in 1 s; SGRQ, St George’s Respiratory Questionnaire; TORCH, TOwards a Revolution in COPD Health