Journal article
Validation of Measures of Satisfaction with and Impact of Continuous and Conventional Glucose Monitoring
Diabetes technology & therapeutics, Vol.12(9), pp.679-684
09/2010
DOI: 10.1089/dia.2010.0015
PMCID: PMC3045572
PMID: 20799388
Abstract
Background: The evaluation of patient-reported outcomes (e.g. impact, satisfaction) is important in trials of continuous glucose monitoring (CGM). We evaluated psychometric properties of the CGM Satisfaction Scale (CGM-SAT) and the Glucose Monitoring Survey (GMS).
Methods: CGM-SAT is a 44-item scale on which patients (n=224) or parents (n=102) rated their experience with CGM over the prior 6 months. GMS is a 22-item scale on which patients (n=447) or parents (n=221) rated the blood glucose monitoring system they were using (home glucose meter with or without CGM) at baseline and 6 months.
Results: The alpha coefficient for the CGM-SAT was > or = 0.94 for all respondents and for the GMS was > or = 0.84 for all respondents at baseline and 6 months. Parent-youth agreement was 0.52 for the CGM-SAT at 6 months and 0.24 and 0.20 for the GMS at baseline and 6 months for the Standard Care Group, respectively. Test-retest reliability of the GMS at 6 months for controls was r=0.76 for adult patients, 0.63 for pediatric patients, and 0.43 for parents. Factor analysis isolated measurement factors for the CGM-SAT labeled Benefits of CGM and Hassles of CGM, accounting for 33% and 9% of score variance, respectively. For the GMS, two factors emerged: Glucose Control and Social Complications, accounting for 28% and 9% of variance, respectively. Significant correlations of CGM-SAT with frequency of CGM use between 6 months and baseline and GMS with frequency of conventional daily self-monitoring of blood glucose at baseline support their convergent validity.
Conclusions: The CGM-SAT and GMS are reliable and valid measures of patient-reported CGM outcomes.
Details
- Title: Subtitle
- Validation of Measures of Satisfaction with and Impact of Continuous and Conventional Glucose Monitoring
- Creators
- Juvenile Diabetes Research Foundation Continuous Glucose Monitoring Study Group
- Contributors
- Eva Tsalikian (Contributor) - University of Iowa, Stead Family Department of Pediatrics
- Resource Type
- Journal article
- Publication Details
- Diabetes technology & therapeutics, Vol.12(9), pp.679-684
- DOI
- 10.1089/dia.2010.0015
- PMID
- 20799388
- PMCID
- PMC3045572
- NLM abbreviation
- Diabetes Technol Ther
- ISSN
- 1520-9156
- eISSN
- 1557-8593
- Publisher
- Mary Ann Liebert, Inc
- Language
- English
- Date published
- 09/2010
- Academic Unit
- Stead Family Department of Pediatrics
- Record Identifier
- 9984093459902771
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