Chronic bronchitis and current smoking are associated with more goblet cells in moderate to severe COPD and smokers without airflow obstruction.

PLoS One · 2015 · PMC4315442 · PMID 25646735

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did not reach statistical significanceno p-value reported

The variables pack year history of smoking, age, gender, race, and lung function did not reach statistical significance.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.