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Questionnaire layout and wording influence prevalence and risk estimates of respiratory symptoms in a population cohort The Clinical Respiratory Journal, 04/17/2012

Ekerljung L et al. – The question set–up has great influences on epidemiological results, and specifically questions that are set up to be excluded based on a previous no answer leads to lower prevalence compared with detached questions. Therefore, Q layout and exact wording of questions has to be carefully considered when comparing studies.

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