Fig. 5From: Determinants of chronic obstructive pulmonary disease severity in the late-elderly differ from those in younger patientsComparisons of SGRQ scores between COPD patients aged <75 and ≥75 years in different grades of COPD. a Symptom scores, b activity scores, c impact scores, d total scores. Data are presented as mean ± SD. *p < 0.05. p < 0.001 comparison between four GOLD grade groups of <75 years old, and †p < 0.05 by post hoc analysis between Grade IV vs. I, II, and III groups (a–d). p < 0.001 comparison between four GOLD grade groups of ≥75 years old, and †p < 0.05 by post hoc analysis between Grade IV vs. I and II groups (b), Grade IV vs. I group (c, d)Back to article page