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ijoinedtostoptheads

As many as 1 out of 4 Americans with COPD never smoked cigarettes. However, smoking accounts for as many as 8 out of 10 COPD-related deaths3 and 38% of the nearly 16 million U.S. adults diagnosed with COPD report current smoking.

personthatishere
Your answer is 90%

Cigarette smoking is responsible for about 90% of all COPD deaths.

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