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Clinical Trial
. 2003 Dec;28(8):519-28.
doi: 10.1093/jpepsy/jsg042.

Predicting attrition in a pediatric asthma intervention study

Kathy Zebracki  1 , Dennis Drotar, H Lester Kirchner, Mark Schluchter, Susan Redline, Carolyn Kercsmar, Natalie Walders
Affiliations
Clinical Trial

Predicting attrition in a pediatric asthma intervention study

Kathy Zebracki et al. J Pediatr Psychol. 2003 Dec.

Abstract

Objectives: To operationalize a comprehensive description of attrition, including pre-inclusion, dropout, and attrition due to intermittent missing data, and to test a predictive model of attrition using a data set from a randomized controlled intervention in pediatric asthma.

Methods: Participants included children, ages 4-12, diagnosed with asthma and their caregivers. Demographic variables and outcome measures of asthma morbidity were examined in 327 families to determine their association with attrition.

Results: Families who did not complete randomization and the intervention tended to have younger caregivers than did completers. Caregiver age emerged as the most consistent predictor of pre-inclusion and dropout attrition. There were no significant predictors of attrition due to intermittent missing data.

Conclusion: Younger caregivers may be at particular risk for attrition in pediatric asthma intervention studies and warrant special attention by investigators.

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