Figure legends
Figure 1. Study consort diagram.
Figure 2. Hazard ratios (HR) and 95% confidence intervals (CI)
of remission rates of COPD patients with eosinophilic or
non-eosinophilic acute exacerbation (≥ 2% vs <2%). COPD:
chronic obstructive pulmonary disease: (a ) Overall analysis of
all ages; (b ) Subgroup analysis of elderly patients;
(c ) Subgroup analysis of middle-aged patients.