Pediatric asthma assessment: validation of 2 symptom diaries

Area of Science:

• Pediatric Pulmonology
• Clinical Trial Methodology
• Asthma Research

Background:

• Assessing pediatric asthma interventions is crucial for improving treatment.
• Traditional pulmonary function tests are often impractical for young children in multisite studies.
• Validated diary questionnaires can offer valuable data on intervention efficacy.

Purpose of the Study:

• To evaluate the validity of two pediatric asthma diary questionnaires: the Pediatric Asthma Diary (PAD) and the Pediatric Asthma Caregiver Diary (PACD).
• To determine if these diaries are suitable for assessing asthma symptoms and intervention effectiveness in children aged 2-14 years.
• To compare the utility of diary questionnaires with conventional pulmonary function measures.

Main Methods:

• Two prospective studies were conducted to assess the validity of the PAD (children 6-14 years) and PACD (children 2-5 years).
• Children were categorized into stable and unstable asthma groups based on medication requirements.
• Discriminant validity, construct validity, and responsiveness to therapy changes were evaluated for both diaries.

Main Results:

• Both the PAD and PACD demonstrated significant discriminant validity, construct validity, and responsiveness to asthma therapy changes.
• The PACD specifically identified differences in nighttime asthma symptoms, including asthma-related awakenings, between stable and unstable groups.
• Diary questionnaires proved valuable for evaluating interventions when pulmonary function testing is not feasible.

Conclusions:

• The Pediatric Asthma Diary (PAD) and Pediatric Asthma Caregiver Diary (PACD) are valid tools for assessing asthma symptoms in children.
• These diaries can serve as a reliable alternative or adjunct to pulmonary function testing in pediatric asthma clinical trials.
• Validated questionnaires enhance the evaluation of asthma interventions in pediatric populations, especially in challenging study settings.