Validation of the Greek Version of the Diabetes Management Self-Efficacy Scale (GR-DMSES)

Health Literacy, Self-Efficacy and Glycemic Control in Patients With Diabetes Type 2 in a Greek Population

Aim  To investigate the relationship between health literacy (HL), self-efficacy (SE), and achievement of treatment goals in patients with type 2 diabetes mellitus (T2DM). Method The cross-sectional study was conducted with a random sample of patients with T2DM attending the diabetology clinic and the Home Care department of the General Hospital of Drama, Greece. They completed two questionnaires: the short form of the European Health Literacy Survey Questionnaire (HLS-EU-Q16) to measure HL and the Diabetes Management Self-Efficacy Scale (DMSES) for people with T2DM to measure SE. Medical history, demographic characteristics, and values related to glycemic control were also recorded. Linear regression analysis was used to search for the dependence of glycosylated hemoglobin (A1C) values with HL and SE and the dependence between them. Result About 120 patients with T2DM (response rate of 92.3%) were enrolled in the study. The mean age of the participants was 62.5 years [standard deviation (SD) = 10.6 years] and most of them were female (53.3%). A1C was found to be significantly negatively associated with diet, physical activity, and SE score. Also, a statistically significant positive correlation was found between HL and SE. HL was correlated with age, gender, education level, and A1C, with women and older people having lower HL, while conversely higher education level was significantly associated with higher HL. Higher A1C was significantly associated with lower HL. Also, SE partially mediates the relationship between HL and A1C, in a significant way. Conclusion The results of the study confirm the important role of HL and SE in the successful management of T2DM. Multi-level educational interventions for diabetic patients could improve HL and SE and promote diabetes self-management.

Translation and psychometric validation of the Arabic Gestational Diabetes Management Self-Efficacy Scale (GDMSES)

INTRODUCTION

The assessment of self-efficacy for adherence to healthy behaviours among women with gestational diabetes (GDM) is undermined by the unavailability of validated tools. Therefore, this study aimed at translating, culturally adapting and assessing the psychometric properties of the Arabic version of Gestational Diabetes Management Self-Efficacy Scale (GDMSES).

MATERIALS AND METHODS

This methodological study was conducted in the Antenatal Clinic at Sultan Qaboos University Hospital in Oman between October 2016 and January 2017. A total of 90 forms of the Arabic GDMSES tool were completed by Omani pregnant women with gestational diabetes. The study has a multiphase design: (1) cultural and linguistic validation; (2) content and face validity; (3) construct validity; (4) internal validity.

RESULTS

The Arabic GDMSES showed satisfactory content validity (CVI between .8 and 1), acceptable overall scale internal consistency reliability (Cronbach's alpha=0.85) and stability overtime (Pearson correlation coefficient>.6). Four factors emerged for construct validity using exploratory factor analysis: nutrition and body weight, adaptation to healthy eating, physical activity and treatment and blood sugar. Our sample size of 90 was considered adequate in determining these factors (Kaiser-Meyer-Olkin=.78).

CONCLUSIONS

GDMSES is a valid and reliable tool, thus providing a quick and easy self-efficacy assessment tool for antenatal nurses dealing with pregnant women with GDM.

Measurement Properties of Patient-Reported Outcome Measures for Diabetes: Systematic Review

BACKGROUND

The management of diabetes is complex. There is growing recognition of the use of patient-reported outcome measures (PROMs) as a standardized method of obtaining an outlook on patients' functional status and well-being. However, no systematic reviews have summarized the studies that investigate the measurement properties of diabetes PROMs.

OBJECTIVE

Our aims were to conduct a systematic review of studies investigating the measurement properties of diabetes PROMs by evaluating the methodological quality and overall level of evidence of these PROMs and to categorize them based on the outcome measures assessed.

METHODS

This study was guided by the PRISMA (Preferred Reporting Items for Systematic Review and Meta-Analysis) guidelines. Relevant articles were retrieved from the Embase, PubMed, and PsychINFO databases. The PROMs were evaluated with the COSMIN (COnsensus-based Standards for the selection of health Measurement Instruments) guidelines.

RESULTS

A total of 363 articles evaluating the measurement properties of PROMs for diabetes in the adult population were identified, of which 238 unique PROMs from 248 studies reported in 209 articles were validated in the type 2 diabetes population. PROMs with at least a moderate level of evidence for ≥5 of 9 measurement properties include the Chinese version of the Personal Diabetes Questionnaire (C-PDQ), Diabetes Self-Management Instrument Short Form (DSMI-20), and Insulin Treatment Appraisal Scale in Hong Kong primary care patients (C-ITAS-HK), of which the C-PDQ has a "sufficient (+)" rating for >4 measurement properties. A total of 43 PROMs meet the COSMIN guidelines for recommendation for use.

CONCLUSIONS

This study identified and synthesized evidence for the measurement properties of 238 unique PROMs for patients with type 2 diabetes and categorized the PROMs according to their outcome measures. These findings may assist clinicians and researchers in selecting appropriate high-quality PROMs for clinical practice and research.

TRIAL REGISTRATION

PROSPERO International Prospective Register of Systematic Reviews CRD42020180978; https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42020180978.

Psychological Outcomes in Children and Early Adolescents With Type 1 Diabetes Following Pediatric Diabetes Summer Camp: A 3-Month Follow-Up Study

Objective: The aim of this study was to assess general psychosocial adjustment to diabetes and perceived disease management among patients with type 1 diabetes (T1D) and their parents before and after patients' participation in a diabetes summer camp. Methods: In this follow-up study, 20 children and adolescents with T1D (eight boys; mean age = 11.01 ± 0.94 years; mean diabetes duration = 3.02 ± 2.27) attending a southern Italian diabetic center, along with their parents, were assessed prior to and 3 months after the youths participated in a 1 week camp-based intervention involving didactic and interactive child-centered education and recreational activities. Patients and their parents completed measures assessing patients' quality of life and strategies employed by patients to cope with pain. Patients also completed measures evaluating their diabetes psychosocial adjustment, diabetes self-efficacy management, and illness perception; also, their parents completed measures of caregivers' perceived diabetes burden and treatment satisfaction. Youths' glycated hemoglobin (HbA1c) and standardized body mass index (z-BMI) values were also assessed. Within-subjects repeated-measures analyses of variance evaluated pre- and post-camp changes. Results: Camp attendance showed no beneficial effects on glycemic control, as indicated by HbA1c values both before (7.02%) and after (7.28%) camp being lower than 7.5%. HbA1c values were found to have increased after camp (pre-camp = 7.02%, post-camp = 7.28%; p = 0.010), but since they still fell within an acceptable range, they did not reveal clinically relevant changes in glycemic control. No substantial significant improvement in psychosocial measures was observed in children or parents (all p > 0.05). According to the parents' evaluation, social support-seeking as a patient pain-coping strategy was slightly increased (p = 0.044) after attending the camp. Conclusions: This study does not provide empirical evidence of benefits of participating in a diabetes camp for either patients or their parents. These findings suggest that healthcare providers rethink such camps as an experience for youths with T1D that actively involves parents and that includes both youth- and parent-focused psychological interventions.

Self-efficacy instruments for type 2 diabetes self-care: A systematic review of measurement properties

AIMS

To identify currently available self-efficacy instruments for type 2 diabetes self-care and to evaluate the evidence for their measurement properties.

DESIGN

Systematic review of measurement properties.

DATA SOURCES

The PubMed, Embase and CINAHL databases were searched from their inception to 27 May 2019.

REVIEW METHODS

The updated COnsensus-based Standards for the selection of health Measurement INstruments methodology were applied.

RESULTS

Twelve instruments were identified from 3,665 records. Eight instruments were related to self-efficacy in performing a comprehensive set of the tasks/behaviours for diabetes self-care and the other four addressed specific behaviours related to diabetes self-care, such as insulin management. Most of the 12 instruments were developed based on Bandura's self-efficacy theory as their theoretical background. Overall, sufficient high-quality evidence for measurement properties was seldom identified. The Diabetes Management Self-Efficacy Scale is currently the best instrument, with particularly the 4-factor, 16-item version being demonstrated to have sufficient high-quality evidence for structural and internal consistency and sufficient moderate-quality evidence for reliability and convergent validity.

CONCLUSIONS

None of the instruments evaluated all of the relevant measurement properties. The Diabetes Management Self-Efficacy Scale is currently the most suitable instrument for potential use in practice and research. The measurement invariance across languages, measurement error and responsiveness of this instrument still need be evaluated.

IMPACT

This systematic review provides clinicians and researchers with a comprehensive list of available instruments for measuring self-efficacy in diabetes self-care, as well as evidence for helping them to select the most appropriate instrument. Using a psychometrically sound instrument will accurately inform practitioners about the levels of self-efficacy in self-care among patients with type 2 diabetes in practice and avoid threatening the credibility of research studies on self-efficacy in diabetes self-care.

A Danish version of self-efficacy in diabetes self-management: A valid and reliable questionnaire affected by age and sex

BACKGROUND

Managing the chronic illness type 1 diabetes (T1D) is extremely demanding, especially during adolescence. Self-efficacy is belief in one's own capabilities and this is crucial for diabetes management. Having a valid method for measuring self-efficacy is important.

OBJECTIVE

Our aims were to psychometrically validate a Danish version of the self-efficacy in diabetes management (SEDM) questionnaire, and to examine the relationship between background variables and self-efficacy.

METHODS

All Danish adolescents with T1D (n = 1075) were invited to participate in our study. In total, 689 agreed to participate and 602 completed the study. Data were collected using a web-based survey. All participants were asked to provide a blood sample for HbA1c measurement. Graphical log-linear Rasch modeling (GLLRM) was used to validate the questionnaire and its reliability was assessed using Monte Carlo simulation.

RESULTS

We found the questionnaire to be valid and reliable, but it had a dual structure that suggested a need for 2 separate subscales. One subscale related to practical (SEDM1) and the other to emotional (SEDM2) aspects of diabetes management. Both subscales were targeted toward adolescents with lower self-efficacy and were associated with HbA1c. SEDM1 was influenced by treatment modality and age. In SEDM2 we found an interaction between age and sex.

CONCLUSION

The Danish version of the SEDM questionnaire should be divided into two parts, each with a valid and reliable subscale for self-efficacy measurement. The relationship between self-efficacy and age seems to differ between boys and girls.

Assessing self-efficacy in type 2 diabetes management: validation of the Italian version of the Diabetes Management Self-Efficacy Scale (IT-DMSES)

Background

Being highly self-efficacious is a key factor in successful chronic disease self-management. In the context of measuring self-efficacy in type 2 diabetes management, the Diabetes Management Self-Efficacy Scale (DMSES) is the most widely used scale. The aim of this study was to adapt the English version of the scale to Italian and to evaluate the psychometric properties of the Italian version of DMSES in type 2 diabetes (IT-DMSES).

Methods

We conducted a cross-sectional study of people with type 2 diabetes attending the Endocrine-Metabolic Disease Care Unit of the Internal Medicine Department of San Marino State Hospital between October 2016 and February 2017.

Patients completed a socio-demographic and clinical data form, the IT-DMSES and 3 self-report questionnaires measuring diabetes distress (PAID-5), psychological well-being (WHO-5) and depression (PHQ-9).

Psychometric testing included construct validity (principal component analysis), internal consistency (Cronbach’s α coefficient) and convergent/discriminant validity (Spearman’s correlation coefficient).

Decision tree analysis was performed to classify patients into homogeneous subgroups of self-efficacy based on their demographic and clinical characteristics.

Results

Participants were 110 males and 55 females, mean age of 65.2 years (SD ± 9), 56.9% had been diagnosed for 1–15 years, 63% had HbA1c level > 53 mmol/mol. Two main factors underlain the construct of self-efficacy in diabetes management: ‘Disease Management’ and “Lifestyles Management”. Disease Management had a good reliability (α = .849) and Lifestyle Management had an excellent reliability (α = .902) indicating that the instrument is internally consistent. A negative and weak correlation was found between Lifestyle management, PAID-5 (r = − 0.258, p = < 0.01) and PHQ-9 (r = − 0.274, p = < 0.01) and a positive one with WHO-5 (r = 0.325, p < 0.01) supporting convergent validity. Disease management was uncorrelated with PAID-5 (r = − 0.142, p = 0.083), PHQ-9 (r = − 0.145, p = 0.076) and weekly correlated with WHO-5 (r = 0.170, p = 0.037) confirming discriminant validity. Higher levels of self-efficacy in lifestyle management were found in patients diagnosed for at least 1 year up to 15 years and aged > 65 years and the poorest self-efficacy was found in males < 65 years.

Conclusions

Results support the validity and reliability of IT-DMSES. The scale can be used in research and clinical practice to monitor type 2 diabetes self-management over time.

Electronic supplementary material

The online version of this article (10.1186/s12955-018-0901-3) contains supplementary material, which is available to authorized users.

Psychometric Properties of Diabetes Management Self-Efficacy in Thai Type 2 Diabetes Mellitus Patients: A Multicenter Study

OBJECTIVE

The aims of this study were to translate and psychometrically evaluate the Thai version of diabetes management self-efficacy scale (T-DMSES) and to examine its association with HbA1c control in diabetic individuals.

METHODS

This study recruited patients from outpatient diabetes clinics of both community and university hospitals. The first phases of this study involved translation of the existing DMSES into Thai, and in the second phase, we evaluated its psychometric properties. The construct validity was evaluated using confirmatory factor analysis. Criterion validity of DMSES was subsequently evaluated by examining DMSES's association with HbA1c control.

RESULTS

The T-DMSES contains 20 items across four factors. Confirmatory factor analysis demonstrated the construct validity of T-DMSES (χ² = 645.142, df = 164, p < 0.001, CFI = 0.98, RMSEA = 0.065, TLI = 0.977, and AGFI = 0.981). The T-DMSES was also shown to be criterion valid with most subscales highly associated with HbA1c control.

CONCLUSION

The T-DMSES was shown to have good psychometric properties. It is likely to provide valuable insights into the epidemiology of diabetes management self-efficacy and may also prove useful in evaluating interventions for raising diabetes management self-efficacy, which in turn, improve both patient self-management and blood sugar control.