Fig. 1From: Smoking related attention alteration in chronic obstructive pulmonary disease-smoking comorbidityThe attention ability scores of the four groups (COPD-Smoking/COPD-Nonsmoking/NonCOPD-Smoking/NonCOPD-NonSmoking) were compared. The p values were adjusted by Bonferroni’s correction for multiple comparisons. (*p < 0.05; **p < 0.01; ***p < 0.001)Back to article page