The asthma Symptom Free Days Questionnaire: how reliable are patient responses?

08:00 EDT 26th October 2018 | BioPortfolio

Summary of "The asthma Symptom Free Days Questionnaire: how reliable are patient responses?"

Symptom free days are a widely used patient-reported outcome (PRO) in asthma clinical trials. We assessed the internal consistency of one instrument for this PRO, the Symptom Free Days Questionnaire (SFDQ), in a population of Black adults with asthma enrolled in the Blacks and Exacerbations on Long-acting beta agonists and Tiotropium (BELT) trial.


Journal Details

This article was published in the following journal.

Name: The Journal of asthma : official journal of the Association for the Care of Asthma
ISSN: 1532-4303
Pages: 1-9


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