Accuracy of children's self-reported adherence to treatment.

Purpose: To examine the relationship between self-reported and electronically monitored adherence to a recommended asthma treatment and to assess the accuracy of the diary data reported by school-age children.

Design: A randomized, controlled clinical trial of the effectiveness of an asthma self-management program. The relationship between self-reported and electronically recorded daily peak expiratory flow rate (PEFR) adherence was assessed in a sample of 42 children, ages 7 through 11 years with moderate to severe asthma in one community in West Virginia, USA. Cognitive social learning theory served as the framework for the intervention.

Methods: At-home adherence to PEFR monitoring during the 5-week study was evaluated using the self-report Asthma Diary and an electronic PEFR meter. Recommended twice daily (morning and evening) PEFR monitoring was measured.

Results: Self-reported and electronically recorded PEFR adherence were modestly correlated. Self-reported adherence was significantly higher than electronically monitored adherence during Week 5. Accuracy of the self-reported PEFR declined over time, and over half of the children fabricated at least one PEFR value during the final week of the study.

Conclusions: Clinicians often evaluate the efficacy of prescribed treatment for children with chronic conditions based on the children's self-reported diary data. The findings indicate that these children's self-reported adherence behaviors contained errors. Parent education regarding supervision of children's adherence, including validating the accuracy of diary data, is critical for successful self-management in children with chronic conditions.