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Self-efficacy scale for Brazilians with type 1 diabetes
Daniela Alves Gastal1, Ricardo Tavares Pinheiro, Débora Potter Vazquez
1Universidade Católica de Pelotas, Pelotas, Rio Grande do Sul, Brazil. dagastal@terra.com.br
Sao Paulo Medical Journal = Revista Paulista De Medicina
|July 13, 2007
Summary
The Insulin Management Diabetes Self-Efficacy Scale (IMDSES) is a valid and reliable tool for assessing self-efficacy in type 1 diabetes patients. It can effectively measure outcomes of diabetes education programs and inform interventions.
Area of Science:
- Endocrinology
- Psychology
- Public Health
Background:
- Diabetes mellitus poses a significant public health challenge, with effective glycemic control crucial for preventing complications.
- Self-efficacy is a critical determinant of successful behavior change in managing chronic conditions like diabetes.
Purpose of the Study:
- To validate the psychometric properties of the Insulin Management Diabetes Self-Efficacy Scale (IMDSES).
- To assess the reliability and validity of the IMDSES in a population of type 1 diabetes patients in southern Brazil.
Main Methods:
- A validation study was conducted with 213 type 1 diabetes patients within the Brazilian public healthcare system.
- Principal component analysis was used to develop subscales, and Cronbach's alpha assessed reliability.
- Criterion validity was examined using glycohemoglobin levels and adherence data.
Main Results:
- The IMDSES, comprising 20 items and three subscales (diet, insulin, general management), explained 53% of the variance.
- Reliability coefficients (Cronbach's alpha) were 0.83 for diet, 0.92 for insulin, and 0.78 for general management.
- Significant associations were found between glycohemoglobin and insulin self-efficacy (p=0.04), and between adherence and self-efficacy on two subscales (p<0.05).
Conclusions:
- The IMDSES demonstrates strong validity and reliability for measuring diabetes self-efficacy.
- The scale is suitable for evaluating the effectiveness of diabetes educational interventions.
- Findings support the use of IMDSES for guiding future diabetes management strategies and interventions.
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