Non-response in a cross-sectional study of respiratory health in Norway.

BMJ Open · 2016 · PMC4716229 · PMID 26739738

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a weak trendno p-value reported

However, a weak trend was observed with non-responders reporting slightly more often ‘manual’ or ‘blue-collar’ occupations (ISCO 6–9) when compared to responders (30% vs 24%).

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