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Pediatric Quality of Life Inventory (Peds QL ) 3.2 Diabetes Module for youth with Type 2 diabetes: reliability and validity
Author(s) -
Varni J. W.,
Delamater A. M.,
Hood K. K.,
Raymond J. K.,
Chang N. T.,
Driscoll K. A.,
Wong J. C.,
YiFrazier J. P.,
Grishman E. K.,
Faith M. A.,
Corathers S. D.,
Kichler J. C.,
Miller J. L.,
Doskey E. M.,
Aguirre V. P.,
Heffer R. W.,
Wilson D. P.
Publication year - 2019
Publication title -
diabetic medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.474
H-Index - 145
eISSN - 1464-5491
pISSN - 0742-3071
DOI - 10.1111/dme.13841
Subject(s) - medicine , type 2 diabetes , diabetes mellitus , type 1 diabetes , construct validity , reliability (semiconductor) , quality of life (healthcare) , psychometrics , endocrinology , clinical psychology , nursing , power (physics) , physics , quantum mechanics
Aim To test the measurement properties of the revised and updated Pediatric Quality of Life Inventory (Peds QL ) 3.2 Diabetes Module originally developed in Type 1 diabetes in youth with Type 2 diabetes. Methods The Peds QL 3.2 Diabetes Module and Peds QL Generic Core Scales were administered in a field test study to 100 young people aged 9–25 years with Type 2 diabetes. Factor analysis was conducted to determine the factor structure of the items. Results The 15‐item Diabetes Symptoms Summary Score and 12‐item Type 2‐specific Diabetes Management Summary Score were empirically derived through factor analysis. The Diabetes Symptoms and Type 2‐specific Diabetes Management Summary Scores showed acceptable to excellent reliability across the age groups tested (α = 0.85–0.94). The Diabetes Symptoms and Type 2‐specific Diabetes Management Summary Scores evidenced construct validity through large effect size correlations with the Generic Core Scales Total Scale Score ( r = 0.67 and 0.57, respectively). HbA 1c was correlated with the Diabetes Symptoms and Type 2‐specific Diabetes Management Summary Scores ( r = −0.13 and −0.22). Minimal clinically important difference ( MCID ) scores were 5.91 and 7.39 for the Diabetes Symptoms and Type 2‐specific Diabetes Management Summary Scores. Conclusions The Peds QL 3.2 Diabetes Module Diabetes Symptoms Summary Score and Type 2‐specific Diabetes Management Summary Score exhibited satisfactory measurement properties for use as youth self‐reported diabetes symptoms and diabetes management outcomes for clinical research and clinical practice for young people with Type 2 diabetes.