Prevalence of chronic obstructive pulmonary disease among adult male cigarettes smokers: a community-based study in Jordan.

Int J Chron Obstruct Pulmon Dis · 2014 · PMC4113569 · PMID 25092972

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did not reach statistical significanceno p-value reported

24 , 32 There was a trend between advancing age (young versus old smoker) and COPD (8% versus 13%, respectively), but it did not reach statistical significance.

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