The Practice of patients about COPD before and after intervention Correct practice Before (n=139) After (n=139) p IE (%) n% n% Cough control 01 0.7 104 74.8 <0.001 14, 757 Breath excieses 00 0.0 102 73.4 Inhaler using 14 10.1 104 74.8 <0.001 640.6 Accuhaler using 01 0.7 64 46.0 <0.001 6, 471 Turbuhaler using 0 0.0 68 48.9 <0.001 Nonsmoking 76 54.7 103 74.1 < 0.05 35.5 Correct practice 00 0.0 87 61.9 Comments: after the intervention, most of the patients practiced correctly about cough control, breath and inhaler using.