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. 2019 Nov 12;20:254. doi: 10.1186/s12931-019-1230-8

Fig. 2.

Fig. 2

Kaplan-Meier curve for severe AECOPD. COPD subjects with elevated sputum AcPGP had shorter time-to-first severe AECOPD compared to individuals with non-elevated sputum AcPGP (195 days [95%CI 139–252] versus 305 days [259–351], P = 0.030)