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Fig. 4 | BMC Research Notes

Fig. 4

From: Determinants of chronic obstructive pulmonary disease severity in the late-elderly differ from those in younger patients

Fig. 4

Total CAT scores of COPD patients aged <75 and ≥75 years with different GOLD grades of COPD. Gray columns <75 years old, black columns ≥75 years old. Data are presented as mean ± SD. *p < 0.05 between two different age groups. p < 0.0001 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

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