Development and validation of the self-management profile for type 2 diabetes (SMP-T2D)

Peyrot Mark, Bushnell, Best, Martin, Cameron Ann, Pat Rick

Description

This study evaluated the measurement properties of a newly developed instrument – the Self-Management Profile for Type 2 Diabetes (SMP-T2D). Methods The 18-item SMP-T2D assesses 12 constructs: level and perceived ease of performance in five self-care domains (blood glucose monitoring, medication-taking, healthy eating, being physically active, and coping), and two global constructs (ease of weight management, confidence with ability to manage diabetes). Validation analyses were based on two studies involving 240 patients with T2D, Study 1 (Clinicaltrials.gov #NCT00637273) with SMP-T2D administration supplemented by SMP-T2D retest one week later, and Study 2 (Clinical trials.gov #NCT00877890) with SMP-T2D administration supplemented by 24-week SMP-T2D follow-up after medication change. Validation included clinical indicators and measures of patient reported quality of life, psychological well-being and treatment outcomes. Results All multi-item SMP-T2D measures showed acceptable internal consistency (alphas = 0.71 to 0.87); ten measures had test-retest reliability >0.75. Correlations among SMP-T2D measures and between SMP-T2D measures and validation measures, which were as hypothesized, provided evidence of convergent and discriminant validity. Scores for six SMP-T2D measures improved significantly during Study 2. Multiple regression analysis showed independent associations between change in SMP-T2D measures and change in trial outcomes from baseline to end-of-study. Conclusions Two studies provide preliminary evidence regarding the reliability, validity and responsiveness of the SMP-T2D. Further research on the utility of the instrument is needed.

Informations

• Publié par: biomed
• Publié le: 01 janvier 2012
• Nombre de lectures: 24
• Langue: English

Extrait

Peyrotet al. Health and Quality of Life Outcomes2012,10:125 http://www.hqlo.com/content/10/1/125

R E S E A R C HOpen Access Development and validation of the selfmanagement profile for type 2 diabetes (SMPT2D) 1* 23 23 4 Mark Peyrot, Donald M Bushnell , Jennie H Best , Mona L Martin , Ann Cameronand Donald L Patrick

Abstract Background:This study evaluated the measurement properties of a newly developed instrument–the SelfManagement Profile for Type 2 Diabetes (SMPT2D). Methods:The 18item SMPT2D assesses 12 constructs: level and perceived ease of performance in five selfcare domains (blood glucose monitoring, medicationtaking, healthy eating, being physically active, and coping), and two global constructs (ease of weight management, confidence with ability to manage diabetes). Validation analyses were based on two studies involving 240 patients with T2D, Study 1 (Clinicaltrials.gov #NCT00637273) with SMPT2D administration supplemented by SMPT2D retest one week later, and Study 2 (Clinical trials.gov #NCT00877890) with SMPT2D administration supplemented by 24week SMPT2D followup after medication change. Validation included clinical indicators and measures of patient reported quality of life, psychological wellbeing and treatment outcomes. Results:All multiitem SMPT2D measures showed acceptable internal consistency (alphas = 0.71 to 0.87); ten measures had testretest reliability >0.75. Correlations among SMPT2D measures and between SMPT2D measures and validation measures, which were as hypothesized, provided evidence of convergent and discriminant validity. Scores for six SMPT2D measures improved significantly during Study 2. Multiple regression analysis showed independent associations between change in SMPT2D measures and change in trial outcomes from baseline to endofstudy. Conclusions:Two studies provide preliminary evidence regarding the reliability, validity and responsiveness of the SMPT2D. Further research on the utility of the instrument is needed.

Background Type 2 diabetes mellitus can have substantial effects on patients’physical and psychosocial wellbeing. People with diabetes, their families and health care providers, and health policymakers are interested in improving dia betes outcomes, which requires both medical care and patient selfmanagement. As such, the American Dia betes Association (ADA) Standards of Medical Care has identified selfmanagement education and ongoing sup port as integral components of diabetes care, and recommends monitoring selfmanagement behaviors in patients receiving treatment for diabetes [1].

* Correspondence: [e-mail] 1 Department of Sociology, Loyola University Maryland, Baltimore, MD, USA Full list of author information is available at the end of the article

Given the importance of patient selfmanagement in the control of diabetes, evaluations of effectiveness in clinical trials of behavioral and pharmacologic treatments should include an assessment of diabetes selfmanage ment, augmenting physiological outcomes such as blood glucose and patient reported outcomes (PROs) such as healthrelated quality of life. Better selfmanagement is expected to lead to improved glycemic control and better patient outcomes in weight management and diabetes related distress. Therefore, we initiated a project to de velop and validate a new patient selfreport instrument, the SelfManagement Profile for Type 2 Diabetes (SMP T2D), which would assess multiple domains and dimen sions of selfmanagement and would be brief enough for use in clinical trials.

© 2012 Peyrot et al.; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.