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Linguistic and Psychometric Validation of the Diabetes-Specific Quality-of-Life Scale in U.K. English for Adults With Type 1 Diabetes.

Cooke, D, O'Hara, MC, Beinart, N, Heller, S, La Marca, R, Byrne, M, Mansell, P, Dinneen, SF, Clark, M, Bond, R, Speight, J and for the U.K. NIHR DAFNE Study Group, (2012) Linguistic and Psychometric Validation of the Diabetes-Specific Quality-of-Life Scale in U.K. English for Adults With Type 1 Diabetes. Diabetes Care.

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Abstract

OBJECTIVE To develop a linguistically and psychometrically validated U.K. English (U.K./Ireland) version of the Diabetes-Specific Quality-of-Life Scale (DSQOLS) for adults with type 1 diabetes.RESEARCH DESIGN AND METHODS. We conducted independent forward and backward translation of the validated German DSQOLS. An iterative interview study with health professionals (n = 3) and adults with type 1 diabetes (n = 8) established linguistic validity. The DSQOLS was included in three Dose Adjustment for Normal Eating (DAFNE) studies (total N = 1,071). Exploratory factor analysis (EFA) was undertaken to examine questionnaire structure. Concurrent and discriminant validity, internal consistency, and reliability were assessed. RESULTS EFA indicated a six-factor structure for the DSQOLS (social aspects, fear of hypoglycemia, dietary restrictions, physical complaints, anxiety about the future, and daily hassles). High internal consistency reliability was found for these factors and the weighted treatment satisfaction scale (α = 0.85-0.94). All subscales were moderately, positively correlated with the Audit of Diabetes-Dependent Quality-of-Life (ADDQoL) measure, demonstrating evidence of concurrent validity. Lower DSQOLS subscale scores [indicating impaired quality of life (QoL)] were associated with the presence of diabetes-related complications.CONCLUSIONSThe DSQOLS captures the impact of detailed aspects of modern type 1 diabetes management (e.g., carbohydrate counting and flexible insulin dose adjustment) that are now routine in many parts of the U.K. and Ireland. The U.K. English version of the DSQOLS offers a valuable tool for assessing the impact of treatment approaches on QoL in adults with type 1 diabetes.

Item Type: Article
Divisions : Faculty of Health and Medical Sciences
Authors :
AuthorsEmailORCID
Cooke, DUNSPECIFIEDUNSPECIFIED
O'Hara, MCUNSPECIFIEDUNSPECIFIED
Beinart, NUNSPECIFIEDUNSPECIFIED
Heller, SUNSPECIFIEDUNSPECIFIED
La Marca, RUNSPECIFIEDUNSPECIFIED
Byrne, MUNSPECIFIEDUNSPECIFIED
Mansell, PUNSPECIFIEDUNSPECIFIED
Dinneen, SFUNSPECIFIEDUNSPECIFIED
Clark, MUNSPECIFIEDUNSPECIFIED
Bond, RUNSPECIFIEDUNSPECIFIED
Speight, JUNSPECIFIEDUNSPECIFIED
for the U.K. NIHR DAFNE Study Group, UNSPECIFIEDUNSPECIFIED
Date : 18 December 2012
Identification Number : 10.2337/dc12-0076
Additional Information : © 2013 by the American Diabetes Association. Readers may use this article as long as the work is properly cited, the use is educational and not for profit, and the work is not altered. See http://creativecommons.org/licenses/by-nc-nd/3.0/ for details.
Depositing User : Symplectic Elements
Date Deposited : 28 Jan 2016 16:06
Last Modified : 28 Jan 2016 16:06
URI: http://epubs.surrey.ac.uk/id/eprint/809585

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