Table 3. Comparison between COPD without CAP and COPD with CAP as regard complications.

Complications	COPD without CAP Group (No=100)		COPD with CAP Group (No=90)		Chi square test
	N	%	N	%	p value
ICU admission	13	13.0%	41	45.6%	<0.001**
Mechanical ventilation	3	3.0%	14	15.9%	0.002*

AECOPD: acute exacerbations of chronic obstructive pulmonary disease; CAP: community-acquired pneumonia; n: Number; ICU: intensive care unit ;*: p < 0.05: Significant (S); **: p < 0.01: Highly significant (HS).