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. 2015 Nov 3;10(11):e0141465. doi: 10.1371/journal.pone.0141465

Fig 3. Median years of survival, stratified according to respiratory disability grade (n = 3,090).

Fig 3

(E) Kaplan-Meier survival plot for patients with newly diagnosed COPD over 6 years of follow-up: Grade 1-Median 3.83 yrs; Grade 2-Median 4.50 yrs; Grade 3-Median 5.67 yrs; None-Median 3.17 yrs. (F) Adjusted Cox’s proportional hazards regression plot: Grade 1- Median 1.65 yrs; Grade 2-Median 2.17 yrs; Grade 3-Median 2.58 yrs; None-Median 4.25 yrs.