Longitudinal validation of a tool for asthma self-monitoring.

ABSTRACT:

Objectives

To establish longitudinal validation of a new tool, the Asthma Symptom Tracker (AST). AST combines weekly use of the Asthma Control Test with a color-coded graph for visual trending.

Methods

Prospective cohort study of children age 2 to 18 years admitted for asthma. Parents or children (n = 210) completed baseline AST assessments during hospitalization, then over 6 months after discharge. Concurrent with the first 5 AST assessments, the Asthma Control Questionnaire (ACQ) was administered for comparison.

Results

Test-retest reliability (intraclass correlation) was moderate, with a small longitudinal variation of AST measurements within subjects during follow-ups. Internal consistency was strong at baseline (Cronbach's α 0.70) and during follow-ups (Cronbach'

SUBMITTER: Nkoy FL 

PROVIDER: S-EPMC4074668 | biostudies-literature | 2013 Dec

REPOSITORIES: biostudies-literature