Health-related quality of life and health preference of Chinese patients with diabetes mellitus managed in primary care and secondary care setting: decrements associated with individual complication and number of complications

Temporal associations of diabetes-related complications with health-related quality of life decrements in Chinese patients with type 2 diabetes: A prospective study among 19 322 adults-Joint Asia Diabetes Evaluation (JADE) register (2007-2018)

BACKGROUND

Patients with type 2 diabetes (T2D) are at high risk of developing multiple complications, affecting their health-related quality of life (HRQoL). Existing studies only considered impact of complication on HRQoL in the year of occurrence but not its residual impacts in subsequent years. We investigated temporal impacts of diabetes-related complications on HRQoL in a 12-year prospective cohort of ambulatory Chinese patients with T2D enrolled in the clinic-based Joint Asia Diabetes Evaluation (JADE) Register.

METHODS

HRQoL utility measures were derived from EuroQol five-dimensional three-level questionnaire (EQ-5D-3L) questionnaires completed by 19 322 patients with T2D in Hong Kong (2007-2018). Temporal EQ-5D utility decrements associated with subtypes of cardiovascular-renal events were estimated using generalized linear regression model after stepwise selection of covariates with p < .01 as cutoff.

RESULTS

In this cohort (mean ± SD age:61.2 ± 11.5 years, 55.3% men, median [interquartile range] duration of diabetes:10.1 [3.0-15.0] years, glycated hemoglobin [HbA1C] 7.5 ± 1.5%), EQ-5D utility was 0.860 ± 0.163. The largest HRQoL decrements were observed in year of occurrence of hemorrhagic stroke (-0.230), followed by ischemic stroke (-0.165), peripheral vascular disease (-0.117), lower extremity amputation (-0.093), chronic kidney disease (CKD) G5 without renal replacement therapy (RRT) (-0.079), congestive heart failure (CHF) (-0.061), and CKD G3-G4 without RRT (-0.042). Residual impacts on HRQoL persisted for 2 years after occurrence of CHF or ischemic stroke and 1 year after hemorrhagic stroke or CKD G3-G4 without RRT.

CONCLUSION

This is the first comprehensive report on temporal associations of HRQoL decrements with subtypes of diabetes-related complications in ambulatory Asian patients with T2D. These data will improve the accuracy of cost-effectiveness analysis of diabetes interventions at an individual level in an Asian setting.

Health state utility values ranges across varying stages and severity of type 2 diabetes-related complications: A systematic review

INTRODUCTION

Health state utility values (HSUV) for Type 2 diabetes mellitus (T2DM) complications are useful in economic evaluations to determine cost effectiveness of an intervention. However, there is a lack of reference ranges for different severity and stages of individual complications. This study aimed to provide an overview of HSUV decrement ranges for common T2DM complications focusing on different severity and stages of complications.

METHOD

A systematic search was conducted in MEDLINE, SCOPUS, WEB OF SCIENCE. (Jan 2000 to April 2022). Included studies for HSUV estimates were from outpatient setting, regardless of treatment types, complication stages, regions and HRQoL instruments. Health Related Quality of Life (HRQoL) outcomes was to be presented as HSUV decrement values, adjusted according to social demographics and comorbidities. Adjusted HSUV decrements were extracted and compiled according to individual complications. After which, subsequently grouped into mild or severe category for comparison.

RESULTS

Searches identified 35 studies. The size of the study population ranged from 160 to 14,826. The HSUV decrement range was widest for cerebrovascular disease (stroke): -0.0060 to -0.0780 for mild stroke and -0.035 to -0.266 for severe stroke; retinopathy: mild (-0.005 to -0.0862), moderate (-0.0030 to -0.1845) and severe retinopathy (-0.023 to -0.2434); amputation: (-0.1050 to -0.2880). Different nature of complication severity defined in studies could be categorized into: those with acute nature, chronic with lasting effects, those with symptoms at early stage or those with repetitive frequency or episodes.

DISCUSSION

Overview of HSUV decrement ranges across different stages of each T2DM diabetes-related complications shows that chronic complications with lasting impact such as amputation, severe stroke with sequelae and severe retinopathy with blindness were generally associated with larger HSUV decrement range. Considerable heterogeneities exist across the studies. Promoting standardized complication definitions and identifying the most influential health state stages on HSUV decrements may assist researchers for future cost-effectiveness studies.

Diabetic Retinopathy and Quality of Life: A Systematic Review and Meta-Analysis

Importance

The association between diabetic retinopathy (DR) and quality of life (QoL) has not been thoroughly investigated.

Objective

To investigate the association between DR and both vision-related QoL (VRQoL) and general health-related QoL (HRQoL).

Data Sources

MEDLINE, EBSCO, Embase, and Web of Science were searched from their inception to April 2022.

Study Selection

Studies included adults with DR and a measure of QoL.

Data Extraction and Synthesis

Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were followed. Two assumption-free meta-analyses were conducted. Analysis 1 included studies with participants without DR as the referent group to which QoL scores of participants with DR, grouped according to DR severity, were compared. Analysis 2 included all studies with participants with DR and a measure of QoL. QoL scores were pooled within categories of DR severity, and comparisons were made between these categories.

Main Outcome and Measures

QoL measured using HRQoL and VRQoL scales.

Results

A total of 93 articles were included: 79 in the meta-analyses and 14 in the narrative results. VRQoL was recorded in 54 studies, HRQoL in 26, and both in 13 studies. The most commonly used scales were the National Eye Institute 25-item Visual Function Questionnaire (VFQ-25) (n = 49) for VRQoL and the Short Form (SF) Health Survey (n = 18) for HRQoL. Thirty-five studies reported VFQ-25 composite scores. Analysis 1 consisted of 8 studies including 1138 participants with DR and 347 participants without DR. Compared with participants without DR, the composite VFQ-25 score was 3.8 (95% CI, 1.0-6.7) points lower in those with non-vision-threatening DR (NVTDR), 12.5 (95% CI, 8.5-16.5) lower in those with any DR, and 25.1 (95% CI, 22.8-27.2) lower in VTDR (P < .001 for trend). Analysis 2 consisted of 35 studies including 6351 participants with DR. The pooled mean VFQ-25 composite score was 91.8 (95% CI, 91.0-92.7) for participants with NVTDR, 77.6 (95% CI, 76.9-78.3) for any DR, and 73.2 (95% CI, 72.6-73.7) for VTDR (P < .001 for trend). HRQoL scores had weak or no associations with NVTDR and strong associations with VTDR.

Conclusions and Relevance

This study found that VRQoL declined with the presence and severity of DR. Interventions to reduce progression of DR at both early and more advanced stages could improve VRQoL.

Health-related quality of life and economic burden of childhood pneumonia in China: a multiregion study

OBJECTIVE

To systematically investigate the health-related quality of life (HRQOL) and economic burden of children with pneumonia in different regions of China.

STUDY DESIGN

The study recruited a series of children under 5 years hospitalised for pneumonia in Shanghai, Zhengzhou and Kunming from January to October 2019.Health utility was assessed using the proxy version of EQ-5D-Y by interviewing patients' guardians face to face. The assessment was administered twice at patients' admission and discharge. Cost incurred for receiving the hospitalisation was collected. Multiple linear regression and quantile regression were used to explore factors of EQ-5D-Y Health Utility Score (HUS) and costs, respectively.

RESULTS

A total of 501 paediatric patients with a median age (IQR) of 1.5 (0.83-2.71) years were included in the analysis. The mean HUS (SD) of the patients was 0.78 (0.18) at admission, and increased to 0.96 (0.10) at discharge. Some patients (14.2%) still felt worried, sad or unhappy after hospitalisation. The mean hospitalisation cost and total cost were RMB5859 (€773) and RMB6439, respectively. The HUS was lower and the economic burden was heavier for the children in Zhengzhou. Apart from region, type of work, insurance status and hospital days were also related to the baseline HUS or HUS increment after treatment; insurance status, Visual Analogue Scale score at discharge, guardians' employment and hospitalisation days were associated with the costs.

CONCLUSION

The children with pneumonia have poor baseline HRQOL, and many of them still have psychological well being problems after treatment. The economic burden varied significantly across regions and is heavy for the patients' families in less developed areas (ie, Zhengzhou and Kunming).

Quantifying health-related quality of life in Malaysian type 2 diabetes: focusing on complication types and severity

PURPOSE

There is a knowledge gap of health utility values for Type 2 Diabetes Mellitus (T2DM) complications in Malaysia. This study aimed to estimate EQ-5D-5L utility values and evaluate health-related quality of life (HRQoL) for Malaysian T2DM associated with complications and clinical characteristics.

METHODS

A cross-sectional study was conducted on T2DM patients at a tertiary hospital outpatient using the Malay and English version of the EQ-5D-5L questionnaire. Health utility values were derived using the Malaysian EQ-5D-5L value set. Ordinary least squares (OLS) multivariable regression model was used to estimate the health utility decrements associated with T2DM-related complications and clinical characteristics.

RESULTS

A total of 513 T2DM patients were recruited. Overall, pain was the most affected of all five EQ-5D-5L dimensions. Patients with foot ulcer, amputation, severe heart failure and frequent hypoglycemia reported more problems collectively in all EQ-5D-5L dimensions. Older age, lower education level, longer duration of T2DM, urine protein creatine index (UPCI) > 0.02 g/mmol, and injection therapy were significantly associated with lower EQ-5D-5L utility values (p < 0.004, Bonferroni adjusted). The lowest unadjusted utility values were reported for severe heart failure 0.65 (interquartile range, IQR 0.50), frequent hypoglycemia 0.74 (0.22) and being amputated 0.78 (0.47). In the multivariable regression model after controlling for sociodemographic and clinical characteristics, the largest utility value decrement was observed for amputation (- 0.158, SE 0.087, p = 0.05), frequent hypoglycemia (- 0.101, SE 0.030, p = 0.001), myocardial infarction (-0.050, SE 0.022, p = 0.022) and obesity (-0.034, SE 0.016, p = 0.029).

CONCLUSION

Larger utility value decrements were found for severe stages of complications. These findings suggest the value of defining severity of complications in utility elicitation studies. The utility decrement quantified for different T2DM complication severity will be useful for economic evaluations within diabetic-related fields.

STYLCONNECT Study: An Assessment of Automatic Data Collection Devices by People Living with Diabetes and Using an Insulin Pen

INTRODUCTION

The use of devices to connect insulin pens could facilitate management and improve glycaemic control in people with type 1 (PwT1D) and type 2 diabetes (PwT2D). However, their acceptance seems little studied. We conducted an online survey with the main objective of assessing the level of interest among insulin-treated people with diabetes (PwD) in a device connected to a disposable pen and secondary objectives of assessing the perceived benefits and important features expected of a connected device and identifying factors associated with interest scores.

METHODS

An ad-hoc questionnaire, validated by PwD, was used. Responses from 1798 PwD (975 PwT1D and 823 PwT2D) were analysed.

RESULTS

The mean interest rating was 7.4/10 (PwT1D: 7.2 vs PwT2D: 7.7; p < 0.001). PwD perceived that the device would make it easier to record their diabetes-related information (7.7/10) and keep all insulin and diabetes data in a single location (7.7/10). It was particularly important for PwD that this type of device could integrate data from glucose-measuring devices (7.8/10) and could set an alarm when all insulin in the body had been metabolised (7.7/10).

CONCLUSION

Our study highlighted PwD's strong interest in automating the collection of their insulin therapy data, with significantly more interest among PwT2D than PwT1D, and the importance of interoperability between glucose measurement devices and interchangeability between the different brands of insulin. More generally, for the first time and on a large scale, our study provided a greater understanding of the expectations of PwD regarding these devices.

Health-related quality of life of Chinese AIDS patients: a multi-region study

OBJECTIVE

To assess the health-related quality of life (HRQOL) of Chinese AIDS patients in three regions (Shanghai, Zhejiang, and Henan) and to examine the relationship between region and the HRQOL.

METHOD

A cross-sectional study was conducted from 2017 to 2018. Multistage stratified sampling was employed to recruit 1,273 AIDS patients from local Centers for Disease Control and Prevention. Data were collected by means of face-to-face interview using a structured questionnaire including the SF-12 and various rating scales. The multivariate linear and logistic regression models were performed to analyze the relationship of region and a variety of factors with the HRQOL and health utility.

RESULTS

The three most affected dimensions were mental health, general health, and vitality as 18.2%, 18.0%, and 16.4% of the patients reported problems respectively. The mean (SD) scores of physical component summary (PCS) and mental component summary (MCS), were 48.19 (8.02) and 46.74 (10.71) respectively. The mean (SD) health utility score was 0.75 (0.13) assessed by the SF-6D derived from the SF-12. Region, age, employment status, individual income, government assistance and stigma significantly affected the patients' HRQOL (P < 0.01). BMI, opportunistic infection, treatment compliance and time of treatment were also found to be significant factors of the HRQOL.

CONCLUSION

This study comprehensively estimated the HRQOL and health utility for the AIDS population in China, their HRQOL was mainly deteriorated in psychological dimensions, and geographical area may be closely related. Hence, close attention needs to be paid on the regional differences in HRQOL and the psychological problems of the patients.

Investigating patients' preferences for new anti-diabetic drugs to inform public health insurance coverage decisions: a discrete choice experiment in China

Background

Diabetes is a major public health concern with a considerable impact on healthcare expenditures. Deciding on health insurance coverage for new drugs that meet patient needs is a challenge facing policymakers. Our study aimed to assess patients’ preferences for public health insurance coverage of new anti-diabetic drugs in China.

Methods

We identified six attributes of new anti-diabetic drugs and used the Bayesian-efficient design to generate choice sets for a discrete choice experiment (DCE). The DCE was conducted in consecutive samples of type 2 diabetes patients in Jiangsu Province. The mixed logit regression model was applied to estimate patient-reported preferences for each attribute. The interaction model was used to investigate preference heterogeneity.

Results

Data from 639 patients were available for analysis. On average, the most valued attribute was the improvement in health-related quality of life (HRQoL) (β = 1.383, p < 0.001), followed by positive effects on extending life years (β = 0.787, p < 0.001), and well-controlled glycated haemoglobin (β = 0.724, p < 0.001). The out-of-pocket cost was a negative predictor of their preferences (β = -0.138, p < 0.001). Elderly patients showed stronger preferences for drugs with a lower incidence of serious side effects (p < 0.01) and less out-of-pocket costs (p < 0.01). Patients with diabetes complications favored more in the length of extended life (p < 0.01), improvement in HRQoL (p < 0.05), and less out-of-pocket costs (p < 0.001).

Conclusion

The new anti-diabetic drugs with significant clinical effectiveness and long-term health benefits should become the priority for public health insurance. The findings also highlight the value of accounting for preference heterogeneity in insurance policy-making.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12889-022-14244-z.

Social Support, Self-Care Behaviour and Self-Efficacy in Patients with Type 2 Diabetes during the COVID-19 Pandemic: A Cross-Sectional Study

Diabetes mellitus is a major public health issue that considerably impacts mortality, morbidity, and healthcare costs worldwide. The COVID-19 pandemic has created havoc in diabetes management, too, like other spectrums of life. A descriptive, cross-sectional study was adopted to determine the effect of Social Support, Self-Care Behaviour and Self-Efficacy in Type 2 Diabetes Mellitus (T2D) during this COVID-19 pandemic. Two hundred T2D patients who satisfied the inclusion criteria were chosen using a convenient sampling procedure. The tool consists of four sections, including socio-demographic characteristics, Multidimensional Scale of Perceived Social Support (MSPSS), revised Summary of Diabetes Self-Care Activities (SDSCA) Scale and modified Diabetes Management Self-Efficacy Scale (DMS). Descriptive and inferential statistics were used to analyze the obtained data. The mean and SD of diabetic management self-efficacy is 5.74 (1.95) and 4.37 (1.4), respectively, for patients with HbA1c < 6.5% and HbA1c ≥ 6.5%. The self-care activities of the patients who had good glycemic control were 4.31 (2.06) compared to 3.50 (1.73) who did not. The social support received by the patients was 6.13 (2.13) vs. 5.31 (1.67) among patients with glycemic control vs. no control. The results show that social support (p = 0.04), self-efficacy (p =0.01) and self-care activities (p = 0.001) were significantly related to the level of glycemic control of the T2D patients. A significant relationship was also identified between gender (p = 0.036), age (p = 0.001) and education status (p = 0.000) with HbA1c control of the participants. This study demonstrates a significant relationship between social support, self-care behaviours, self-efficacy and glycemic management in T2D patients. During this COVID-19 pandemic, interventions to enhance the self-care activities like exercise and social support to boost their self-efficacy; for better diabetes management, reducing diabetes complications or prolonging their onset are the need of the hour.

Valuing health states of people with type 2 diabetes: Analyses of the nationwide representative linked databases

AIMS/INTRODUCTION

To estimate preference-based measures of health-related quality of life associated with sociodemographic and clinical characteristics in type 2 diabetes patients.

MATERIALS AND METHODS

Individuals with EuroQol-5 dimensions-3 levels data were identified from Taiwan's National Health Interview Survey in 2009 and 2013. Status of diabetes, comorbidities, complications and treatments were ascertained through data linkage to Taiwan's National Health Insurance Research Database. Multivariable ordinary least squares, Tobit and median regression analyses were used to estimate the coefficients that represented independent impacts of patients' characteristics on health-related quality of life.

RESULTS

The mean health utility score for 2,104 participants was 0.838. Being female, aging, divorced/widowed, never worked or underweight, or having a lower monthly household income, injectable glucose-lowering therapy, comorbid connective tissue disease or depression were associated with lower health utilities. Having an amputation led to the largest reduction by 0.288 in health utilities, followed by debilitating stroke (0.266), heart failure (0.237), other coronary heart disease (0.185), kidney dialysis/transplant (0.148), coronary revascularizations (0.093), transient ischemic attack/stroke (0.078), diabetic neuropathy (0.062), polyneuropathy (0.055) and other neuropathy (0.043).

CONCLUSIONS

Major vascular complications, connective tissue disease and depression are associated with considerably worse health-related quality of life. These health utility estimates can facilitate health economic evaluations to determine cost-effective strategies for diabetes management.

Health State Utility Values for Type 2 Diabetes and Related Complications in East and Southeast Asia: A Systematic Review and Meta-Analysis

OBJECTIVES

East and Southeast Asia has the greatest burden of diabetes in the world. We sought to derive a reference set of utility values for type 2 diabetes without complication and disutility (utility decrement) values for important diabetes-related complications to better inform economic evaluation.

METHODS

A systematic review to identify utility values for diabetes and related complications reported in East and Southeast Asia. We searched MEDLINE (OVID) from inception to May 26, 2020 for utility values elicited using direct and indirect methods. Identified studies were assessed for quality based on the National Institute of Health and Care Excellence guidelines. Utility and disutility estimates were pooled by meta-analyses with subgroup analyses to evaluate differences by nationality and valuation instrument. (PROSPERO: CRD42020191075).

RESULTS

We identified 17 studies for the systematic review from a total of 13 035 studies in the initial search, of which 13 studies met the quality criteria for inclusion in the meta-analyses. The pooled utility value for diabetes without complication was 0.88 (95% CI 0.83-0.93), with the pooled utility decrement for associated complications ranged from 0.00 (for excess BMI) to 0.18 (for amputation). The utility values were consistently more conservative than previous estimates derived in Western populations. Utility decrements were comparable for SF-6D and EQ-5D valuation instruments and for Chinese and other Asian groups.

CONCLUSIONS

A reference set of pooled disutility and utility values for type 2 diabetes and its complications in East and Southeast Asian populations yielded more conservative estimates than Western populations.

The impact of comorbid chronic kidney disease and diabetes on health-related quality-of-life: a 12-year community cohort study

BACKGROUND

Quality-of-life is an essential outcome for clinical care. Both chronic kidney disease (CKD) and diabetes have been associated with poorer quality-of-life. The combined impact of having both diseases is less well understood. As diabetes is the most common cause of CKD, it is imperative that we deepen our understanding of their joint impact.

METHODS

This was a prospective, longitudinal cohort study of community-based Australians aged ≥25 years who participated in the Australian Diabetes, Obesity and Lifestyle study. Quality-of-life was measured by physical component summary (PCS) and mental component summary sub-scores of the Short Form (36) Health Survey. Univariate and multivariate linear mixed effect regressions were performed.

RESULTS

Of the 11 081 participants with quality-of-life measurements at baseline, 1112 had CKD, 1001 had diabetes and of these 271 had both. Of the 1112 with CKD 421 had Stage 1, 314 had Stage 2, 346 had Stage 3 and 31 had Stages 4/5. Adjusted linear mixed effect models showed baseline PCS was lower for those with both CKD and diabetes compared with either disease alone (P < 0.001). Longitudinal analysis demonstrated a more rapid decline in PCS in those with both diseases.

CONCLUSIONS

The combination of CKD and diabetes has a powerful adverse impact on quality-of-life, and participants with both diseases had significantly poorer quality-of-life than those with one condition.

The association between diabetic complications and health-related quality of life in patients with type 2 diabetes: a cross-sectional study from Iran

INTRODUCTION

This study aimed to investigate the health-related quality of life (HRQoL) of type 2 diabetic patients and its relationship with the complications of diabetes in Farashband County, Fars, Iran.

METHODS

Data of this cross-sectional study were collected by a researcher-made demographic questionnaire, EuroQol-5 Dimensions questionnaire (EQ-5D) and Visual Analog Scale (VAS) and also from patient records. Multivariate regression model was used to investigate the net effect of diabetes complications on HRQoL after controlling for other independent variables.

RESULTS

A total of 685 patients with a mean age of 58.36 and a disease duration of 7.64 years participated in the study. The mean EQ-5D and EQ-VAS scores of all patients were 0.64 and 56.53, respectively. The HRQoL dimensions in which the largest portions of the population had problems were Pain/Discomfort (77.23%) and Anxiety/Depression (63.50%). Among the studied diabetic patients, women, divorcees, and widows were more likely to report problems in all dimensions of HRQoL, and people without complications, people with university degrees, and employed people were more likely to report fewer problems in these dimensions (P < 0.05). After controlling for the effect of all independent variables in the multivariate regression model, a significant negative relationship was found between diabetes complications and EQ-5D: β =  - 0.149 (95% CI - 0.186, - 0.112) and EQ-VAS: β =  - 6.697 (95% CI - 9.947, - 3.747). This indicates that for each additional diabetic complication, 0.149 and 6.697 units of EQ-5D Index and EQ-VAS were reduced, respectively.

CONCLUSION

This study indicated that type 2 diabetic patients in the studied region, especially those with complications, suffer from poor HRQoL. Therefore, more attention should be paid to the main determinants of HRQoL when adopting policies for diabetes management in order to ultimately improve the HRQoL of these patients.

Health utility of type 2 diabetes patients using basal insulin in China: results from the BEYOND II study

OBJECTIVE

To derive the health utility scores of type 2 diabetes (T2D) patients using basal insulin (BI) with diverse characteristics in China.

METHODS

The study used the data of insulin-using T2D patients on BI treatment enrolled in the BEYOND II study, which is a multi-center, observational study from 78 hospitals nationwide. The 3-level EQ-5D (EQ-5D-3L) questionnaire was administered to each patient to derive their health utility scores using the EQ-5D-3L value set for China. Patients' clinical and sociodemographic information were retrieved from their electronic case report form (eCRF). Ordinary least-square models with different specifications were explored to identify the best-fitting model to predict the utility scores.

RESULTS

The sample (n = 12,583) achieved a mean (standard deviation) EQ-5D-3L utility score of 0.936 (0.120). According to the model, a Chinese male who was younger than 59 years, not underweight, diagnosed with T2D shorter than 10 years, with controlled plasma glucose and free of diabetes complications/comorbidities, would have a mean utility of 0.993. Being female, older age, underweight, and higher plasma glucose, longer diabetes duration was negatively related to EQ-5D-3L scores. Comorbidities and seven of eleven complications were associated with utility decrement. Interactions between some complications were also discovered.

CONCLUSIONS

The derived health utility scores for diabetes complications could facilitate the assessment of the cost-effectiveness of health interventions for Chinese insulin-using T2D patients.

Health-related quality of life among Chinese primary care patients with different lower urinary tract symptoms: a latent class analysis

PURPOSE

No previous study has used a data-driven approach to explore symptom subclasses among patients with lower urinary tract symptoms (LUTS). The objectives of this study were to use latent class analysis (LCA) to identify distinct classes of LUTS among primary care patients and to assess the class differences in health-related quality of life (HRQOL).

METHODS

In this cross-sectional study, 500 patients were randomly recruited, and 18 symptoms according to the International Continence Society 2002 criteria were assessed. Classes were identified by LCA. Patient HRQOL was measured using the 12-item Short Form Health Survey (version 2), the modified Incontinence Impact Questionnaire-Short Form and the HRQOL item from the International Prostate Symptom Score.

RESULTS

Six distinct LUTS classes were identified: "asymptomatic" (26.0%), "mild symptoms" (22.6%), "moderate multiple symptoms" (17.0%), "urgency symptoms" (13.8%), "urinary incontinence" (12.0%) and "severe multiple symptoms" (8.6%). Multinomial regression analysis found differences in the gender distribution and prevalence of heart diseases across classes, and multiple linear regression found that patients with "severe multiple symptoms" and "urinary incontinence" had the poorest HRQOL.

CONCLUSION

Almost three quarters of the primary care patients in this study were suffering from varying degrees of LUTS. The poor HRQOL in "severe multiple symptoms" and "urinary incontinence" implies that patients in these classes require additional attention and treatments.

Health care access and health-related quality of life among people with diabetes in the Southern Cone of Latin America-a cross-sectional analysis of data of the CESCAS I study

PURPOSE

Little is known on the association of health care access and health-related quality of life (HRQoL) in people with diabetes in the Southern Cone of Latin America (SCLA).

METHODS

We analyzed data of 1025 participants of CESCAS I. To determine HRQoL, we used the SF-12 physical (PCS-12) and mental component summary (MCS-12). We compared four groups regarding HRQoL: (a) insured people without self-reported barriers to health care, (b) uninsured people without self-reported barriers to health care, (c) insured people with self-reported barriers to health care, and (d) uninsured people with self-reported barriers to health care. We conducted linear regressions with PCS-12 and MCS-12 as outcome. We adjusted for sociodemographic and disease-related factors and having access to a primary physician.

RESULTS

In the first group, there were 407, in the second 471, in the third 44, and in the fourth group 103 participants. Compared to the first group, PCS-12 was 1.9 points lower (95% Confidence Interval, CI: - 3.5, - 0.3) in the second, 4.5 points (95% CI: - 8.1, - 1) lower in the third, and 6.1 points lower (95% CI: - 8.7, - 3.6) in the fourth group. Compared to the first group, MCS-12 was 0.6 points lower (95% CI: - 2.7, 1.4) in the second, 4.8 points lower (95% CI: - 9.3, - 0.3) in the third, and 5.8 points lower (95% CI: - 9.1, - 2.5) in the fourth group.

CONCLUSION

In the SCLA, impeded access to care is common in people with diabetes. Self-reported barriers to care may be more important than insurance status in determining HRQoL.

Evaluation of the application of the Diabetes Quality of Life Questionnaire in patients with diabetes mellitus

Objective Diabetes mellitus (DM) is a chronic disease with great impact on patients' quality of life (QoL). This variable can be measured using reliable, standardized, and validated instruments. The purpose of this study was to evaluate the application and reporting of the Diabetes Quality of Life Measure (DQOL) or the Diabetes Quality of Life for Youths Measure (DQOLY), an adapted version for young patients with DM. Materials and methods A systematic review of interventional and observational studies using the DQOL or DQOLY was performed. Searches were conducted in the electronic databases Medline, Scopus, Web of Science, Lilacs, and SciELO. Results After conducting the searches, 111 studies met the inclusion criteria and were included in the qualitative analysis. Of these, 32 studies were classified as interventional and 79 as observational, with 27,481 patients. The DQOL was applied in 82 studies, the DQOLY in another 27, and two studies used both instruments. DM was classified as type 1 DM in 69 studies and type 2 DM in 35 studies. Six studies included both patients. Improvement in patients' QoL after an intervention was observed in 13 interventional studies. Most of the studies (90%) provide a detailed description of the instrument and 52% the previous validation. The interpretation of the scores obtained varies among the studies, probably due to the differences inherent in cultural validations, translations, and adaptations. Conclusion The application of the instruments in clinical practice must be rigorously standardized and requires an accurate understanding of psychometric and statistical concepts. Arch Endocrinol Metab. 2020;64(1):59-65.

Factors associated with quality of life in patients with diabetic hypoglycaemia

AIMS AND OBJECTIVES

To identify determinants of quality of life among patients who had experienced hypoglycaemia and who were undergoing insulin treatment.

BACKGROUND

Patients with diabetes receiving insulin treatment are at high risk for hypoglycaemia, which tends to affect their quality of life.

DESIGN

With a cross-sectional and observational study design (see the STROBE checklist and Appendix S1).

METHODS

One hundred and fifty patients with type 2 diabetes who had received insulin treatment and had experienced hypoglycaemia (<70 mg/dl) in the last 6 months were recruited. Data were collected from May 2016-February 2018 using the Knowledge of Hypoglycaemia Scale, Fear of Hypoglycaemia Scale, Social Support Scale and the simplified Taiwanese version of the Quality of Life Scale developed by the World Health Organization.

RESULTS

Factors found to be associated with quality of life in patients with hypoglycaemia included having an educational level of senior high school or above, being on an insulin regimen only, engaging in regular exercise, diabetes complications, fear of hypoglycaemia and greater social support, which accounted for 28.5% of the total variance.

CONCLUSIONS

During the process of glycaemic control, patients inevitably experience hypoglycaemic episodes. Therefore, healthcare providers should assist patients with disease management to improve their quality of life. Future studies should also recruit patients who claim to have experienced hypoglycaemic symptoms, rather than considering only those with blood glucose levels below 70 mg/dl, to expand the generalisability of the findings. Future studies may also focus on the management of hypoglycaemia in patients on an insulin regimen, and on examining the effect of health education programmes on prevention of hypoglycaemia.

RELEVANCE TO CLINICAL PRACTICE

The present findings could provide a reference for healthcare providers to consolidate nursing care guidelines and to improve such patients' quality of life.

Effects of Diabetic Complications on Health-Related Quality of Life Impairment in Vietnamese Patients with Type 2 Diabetes

Complications of type 2 diabetes mellitus (T2DM) adversely influence patients' health-related quality of life (HRQOL). This study is aimed at examining HRQOL of T2DM patients, as well as the effects of diabetic complications and comorbidities on HRQOL in this population. This was a hospital-based cross-sectional study on 214 T2DM patients in Hanoi, Vietnam. Short-form 12 version 2 (SF-12v2) and EuroQOL-5 Dimensions-5 Levels (EQ-5D-5L) were employed to measure the HRQOL. The median physical component summary score (PCS), mental component summary score (MCS), and EQ-5D index were 45.6, 56.3, and 0.94, respectively. Having at least one diabetic complication was associated with the reduction of SF-12 scores in social functioning (Diff. = -5.69, 95%CI = -9.24; -2.13), role emotional (Diff. = -1.81, 95%CI = -3.12; -0.51), and MCS (Diff. = -2.55, 95%CI = -5.01; -0.1). Significant decrement of physical functioning, role physical, social functioning, role emotional, and MCS was found in patients having diabetic heart diseases compared to those without diabetic complications. The study revealed that HRQOL of Vietnamese patients with diabetic complications was moderately low, especially in social and mental health perspectives. Strategies to prevent the onset of diabetic complications should be developed as a priority in diabetes management.

Cost-effectiveness of a primary care multidisciplinary Risk Assessment and Management Program for patients with diabetes mellitus (RAMP-DM) over lifetime

PURPOSE

The multidisciplinary Risk Assessment and Management Program for patients with diabetes mellitus (RAMP-DM) was found to be cost-saving in comparison with usual primary care over 5 years' follow-up. This study aimed to estimate the cost-effectiveness of RAMP-DM over lifetime.

METHODS

We built a Discrete Event Simulation model to evaluate the cost-effectiveness of RAMP-DM over lifespan from public health service provider's perspective. Transition probabilities among disease states were extrapolated from a cohort of 17,140 propensity score matched participants in RAMP-DM and those under usual primary care over 5-year's follow-up. The mortality of patients with specific DM-related complications was estimated from a cohort of 206,238 patients with diabetes. Health preference and direct medical costs of DM patients referred to our previous studies among Chinese DM patients.

RESULTS

RAMP-DM individuals gained 0.745 QALYs and cost US$1404 less than those under usual care. The probabilistic sensitivity analysis found that RAMP-DM had 86.0% chance of being cost-saving compared to usual care under the assumptions and estimates used in the model. The probability of RAMP-DM being cost-effective compared to usual care would be over 99%, when the willingness to pay threshold is HK$20,000 (US$ 2564) or higher.

CONCLUSION

RAMP-DM added to usual primary care was cost-saving in managing people with diabetes over lifetime. These findings support the integration of RAMP-DM as part of routine primary care for all patients with diabetes.

Long-term cost-effectiveness of a Patient Empowerment Programme for type 2 diabetes mellitus in primary care

AIM

To evaluate the long-term cost-effectiveness of a Patient Empowerment Programme (PEP) for type 2 diabetes mellitus (DM) in primary care.

MATERIALS AND METHODS

PEP participants were subjects with type 2 DM who enrolled into PEP in addition to enrolment in the Risk Assessment and Management Programme for DM (RAMP-DM) at primary care level. The comparison group was subjects who only enrolled into RAMP-DM without participating in PEP (non-PEP). A cost-effectiveness analysis was conducted using a patient-level simulation model (with fixed-time increments) from a societal perspective. We incorporated the empirical data from a matched cohort of PEP and non-PEP groups to simulate lifetime costs and outcomes for subjects with DM with or without PEP. Incremental cost-effectiveness ratios (ICER) in terms of cost per quality adjusted life year (QALY) gained were calculated. Probabilistic sensitivity analysis was conducted with results presented as a cost-effectiveness acceptability curve.

RESULTS

With an assumption that the PEP effect would last for 5 years as shown by the empirical data, the incremental cost per subject was US $197 and the incremental QALYs gained were 0.06 per subject, which resulted in an ICER of US $3290 per QALY gained compared with no PEP across the lifetime. Probabilistic sensitivity analysis showed 66% likelihood that PEP is cost-effective compared with non-PEP when willingness-to-pay for a QALY is ≥US $46 153 (based on per capita GDP 2017).

CONCLUSIONS

Based on this carefully measured cost of PEP and its potentially large benefits, PEP could be highly cost-effective from a societal perspective as an adjunct intervention for patients with DM.

Annual direct medical costs associated with diabetes-related complications in the event year and in subsequent years in Hong Kong

AIM

To develop models to estimate the direct medical costs associated with diabetes-related complications in the event year and in subsequent years.

METHODS

The public direct medical costs associated with 13 diabetes-related complications were estimated among a cohort of 128 353 people with diabetes over 5 years. Private direct medical costs were estimated from a cross-sectional survey among 1825 people with diabetes. We used panel data regression with fixed effects to investigate the impact of each complication on direct medical costs in the event year and subsequent years, adjusting for age and co-existing complications.

RESULTS

The expected annual public direct medical cost for the baseline case was US$1,521 (95% CI 1,518 to 1,525) or a 65-year-old person with diabetes without complications. A new lower limb ulcer was associated with the biggest increase, with a multiplier of 9.38 (95% CI 8.49 to 10.37). New end-stage renal disease and stroke increased the annual medical cost by 5.23 (95% CI 4.70 to 5.82) and 5.94 (95% CI 5.79 to 6.10) times, respectively. History of acute myocardial infarction, congestive heart failure, stroke, end-stage renal disease and lower limb ulcer increased the cost by 2-3 times. The expected annual private direct medical cost of the baseline case was US$187 (95% CI 135 to 258) for a 65-year-old man without complications. Heart disease, stroke, sight-threatening diabetic retinopathy and end-stage renal disease increased the private medical costs by 1.5 to 2.5 times.

CONCLUSIONS

Wide variations in direct medical cost in event year and subsequent years across different major complications were observed. Input of these data would be essential for economic evaluations of diabetes management programmes.