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Journal of Pediatric Psychology, Vol. 28, No. 3, 2003, pp. 203-211
© 2003 Society of Pediatric Psychology

Blood Glucose Estimations in Adolescents With Type 1 Diabetes: Predictors of Accuracy and Error

Lisa J. Meltzer, PhD, Suzanne Bennett Johnson, PhD, Sarah Pappachan, BS and Janet Silverstein, MD

University of Florida

All correspondence should be sent to Suzanne Bennett Johnson, Florida State University College of Medicine, Tallahassee, Florida 32306-4300. E-mail: suzanne.johnson{at}med.fsu.edu. Anne Kazak, PhD, ABPP, former Editor, served as accepting editor on this article.

Objective To examine predictors of blood glucose (BG) estimation accuracy and errors in adolescents with Type 1 diabetes. Method Seventy-eight adolescents (ages 11-19) rated their physical symptoms and estimated their BG prior to conducting daily BG tests. BG estimation data were subject to an error grid analysis. Hierarchical regression was used to identify predictors of BG estimation accuracy and errors. Results The average participant made accurate BG estimations 37% of the time and clinically relevant BG estimation errors 24% of the time. Girls and older adolescents had higher BG estimation accuracy rates and lower BG estimation error rates than boys and younger adolescents. Higher BG variability was also associated with increased BG estimation errors. Conclusions Although boys, younger adolescents, and those with higher BG variability showed higher BG estimation error rates, most participants showed low rates of BG estimation accuracy and high rates of BG estimation error. Health providers may underestimate the frequency of inappropriate self-treatment as a result of patient difficulty in estimating BG accurately.

Key words: Type 1 diabetes; BG estimations; hypoglycemia symptoms; hyperglycemia symptoms.


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