Validation of an asthma symptom diary for interventional studies.

Arch Dis Child

Department of Epidemiology, Merck Research Laboratories, PO Box 4, BL-3, West Point, PA 19486, USA.

Published: May 1999

Objective: The Pediatric Asthma Diary was developed and validated to assess efficacy of interventions in children with asthma.

Design, Patients, And Setting: Diary validation was performed in a three week, prospective study of 106 children aged 6-14 years with asthma. Children were classified at baseline as either stable (requiring no additional asthma treatment) or new onset/worse (requiring either addition of or increase in anti-inflammatory treatment).

Results: A daytime symptom scale and "day without asthma" were defined from diary questions. Both measures demonstrated significant validity and responsiveness to anti-inflammatory treatment. The stable group experienced a higher percentage of days without asthma during week 1 compared with the new onset/worse group (39.6% v 11.6%, respectively). The new onset/worse patients experienced significant improvement in days without asthma (24.5%) compared with stable patients (6.4%).

Conclusions: The Pediatric Asthma Diary daytime symptom scale and day without asthma are acceptable measures for use in asthma intervention studies of children aged 6-14 years.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1717937PMC
http://dx.doi.org/10.1136/adc.80.5.414DOI Listing

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