New Zealand Population Norms for the EQ-5D-5L Constructed From the Personal Value Sets of Participants in a National Survey

Estimated health and economic effects associated with over- and under-exposure to solar ultraviolet radiation in Australia and New Zealand using the SUNEX simulation model

Multiple health problems are associated with either over- or under-exposure to ultraviolet (UV) radiation. Using an agent-based microsimulation model, we examined the joint health and economic effects of conditions arising from over-exposure to sunlight (i.e., melanoma, keratinocyte skin carcinoma (KC) and cataract) and under-exposure to sunlight via vitamin D deficiency (i.e., fragility fractures and multiple sclerosis). We developed an agent-based model to estimate and compare incident cases, disease-specific deaths, healthcare costs and losses in quality-adjusted life years (QALYs) attributable to over- or under-exposure to UV radiation. Simulations were performed over a 20-year period for populations in 14 locations across Australia and New Zealand. Conditions caused by over-exposure to UV radiation were predicted to result in 6.0 and 1.2 million new cases compared with 0.12 and 0.08 million cases from under-exposure in Australia and New Zealand, respectively. However, the number of deaths due to under-exposure (Australia: 58,503; New Zealand: 20,104) were higher than those arising from over-exposure (Australia: 49,320; New Zealand: 7136), but this was dependent on the definition of vitamin D deficiency used. The expected healthcare costs from over-exposure to UV radiation were AU$12.4 billion in Australia and NZ$5.2 billion in New Zealand, three-fold higher than costs for conditions attributable to under-exposure in both countries. Despite the enormous burden of skin cancers, highlighting the importance of sun protection, avoidable deaths and healthcare costs of fragility fractures due to a lack of UV radiation requires a reduction in vitamin D deficiency in Australians and New Zealanders.

Cost-effectiveness analysis of hydrophilic coated catheters for intermittent catheterisation in traumatic spinal cord injury in New Zealand

BACKGROUND

Intermittent catheterisation is the standard treatment for incomplete bladder emptying in spinal cord injuries (SCI), but urinary tract infections (UTI) remain a common and costly complication. Hydrophilic-coated catheters have been shown to decrease infection rates; however, they are more expensive compared to uncoated catheters. The aim was to model the cost-effectiveness of hydrophilic-coated catheters (HCIC) compared to uncoated catheters in New Zealand (NZ) patients with traumatic SCI who intermittently catheterise.

METHODS

A probabilistic economic Markov model adapted to NZ costing and demographics modelled economic and quality-of-life benefits for the two catheter types in SCI patients using intermittent catheters. Inputs included UTI rates, severity of infection, utility values, SCI demographics, catheter costs and UTI treatment in New Zealand dollars. The model output reports UTI rates, life years gained, quality-adjusted life-years and incremental cost-effectiveness ratios for the two catheter types.

RESULTS

HCIC use is predicted to reduce UTIs by 11%, resulting in a 7% increase in quality adjusted life years (QALY). Over a patient's lifetime, it is estimated that 3.8 simple infections and 2.1 prolonged infections treated in primary care could be avoided, and it is predicted to avoid 1.3 severe complex infections that require hospitalization. The incremental cost-effectiveness ratio of $27 919/QALY falls within NZ Government willingness to pay threshold for therapeutic interventions.

CONCLUSION

Reducing UTI's with HCIC has quality of life and economic benefits to the patient and healthcare system, as it is a common and costly complication in New Zealand. This model demonstrates that HCIC is likely to be cost-effective in New Zealand SCI patients.

Population norms for the EQ-5D-5L for Hungary: comparison of online surveys and computer assisted personal interviews

BACKGROUND AND OBJECTIVES

The aims of this study were to provide population norms for EQ-5D-5L in Hungary and investigate the differences in EQ-5D-5L normative data by survey mode, i.e. online surveys and computer assisted personal interviews (CAPI).

METHODS

A pooled database was built comprising six online (N = 7,034) and two CAPI (N = 3,020) population-based studies with the EQ-5D-5L. Descriptive statistics were performed. Multinominal logistic and linear regression analyses were applied to compare the online and CAPI samples. Traditional and machine learning regression tools were used to investigate the determinants of EQ-5D-5L index values.

RESULTS

'No problems' in any of the five EQ-5D-5L domains were reported by 33.9% (online) and 58.9% (CAPI) of the participants. Most problems were reported on the pain/discomfort domain in both study types (51.9% and 33.6%, respectively). Men and more educated respondents had significantly higher average EQ-5D-5L index values. EQ-5D-5L index values and EQ VAS scores were significantly higher in the CAPI sample, except in age groups 65-74 (no difference) and 75+ (online scores were significantly higher). Only 7-10% of variance in the EQ-5D-5L index values was explained by the variables survey mode, education, sex and age, with age having the largest and sex the smallest effect.

CONCLUSIONS

EQ-5D-5L population norms derived from online and CAPI studies may differ significantly from each other. It is recommended to consider the survey mode, sampling and sociodemographic characteristics of the participants when choosing population norms as reference set. Further comparative studies investigating EQ-5D-5L population norms by different study designs and administration modes are encouraged.

A safety and feasibility randomized placebo controlled trial exploring electroencephalographic effective connectivity neurofeedback treatment for fibromyalgia

Fibromyalgia is a chronic pain condition contributing to significant disability worldwide. Neuroimaging studies identify abnormal effective connectivity between cortical areas responsible for descending pain modulation (pregenual anterior cingulate cortex, pgACC) and sensory components of pain experience (primary somatosensory cortex, S1). Neurofeedback, a brain-computer interface technique, can normalise dysfunctional brain activity, thereby improving pain and function. This study evaluates the safety, feasibility, and acceptability of a novel electroencephalography-based neurofeedback training, targeting effective alpha-band connectivity from the pgACC to S1 and exploring its effect on pain and function. Participants with fibromyalgia (N = 30; 15 = active, 15 = placebo) received 12 sessions of neurofeedback. Feasibility and outcome measures of pain (Brief Pain Inventory) and function (Revised Fibromyalgia Impact Questionnaire) were collected at baseline and immediately, ten-days, and one-month post-intervention. Descriptive statistics demonstrate effective connectivity neurofeedback training is feasible (recruitment rate: 6 participants per-month, mean adherence: 80.5%, dropout rate: 20%), safe (no adverse events) and highly acceptable (average 8.0/10) treatment approach for fibromyalgia. Active and placebo groups were comparable in their decrease in pain and functional impact. Future fully powered clinical trial is warranted to test the efficacy of the effective connectivity neurofeedback training in people with fibromyalgia with versus without chronic fatigue.

Population Norms and Disutility Catalog for Chronic Conditions in Sri Lanka

OBJECTIVES

This study aimed to produce Sri Lankan population norms of utility values, EuroQol visual analog scale scores, and reported problems in each domain of the EQ-5D-5L, as well as a disutility catalog, based on a representative set of Sri Lankan preferences.

METHODS

Data from a nationally representative sample of 6415 adults from the Sri Lanka Health and Ageing Study in 2018 to 2019 were used. Sri Lankan preferences were applied to EQ-5D-5L scores to produce utility values. Descriptive statistics were produced for responses by EQ-5D-5L dimension, mean utility values, and EuroQol visual analog scale scores, disaggregated by demographic and disease group. Multivariable logistic regression assessed associations with problems in each dimension, and demographic and chronic diseases. Robust ordinary least squares and tobit regressions were performed to estimate the marginal disutility of demographic covariates and disease conditions.

RESULTS

The mean utility value for the overall population was 0.867. Utility values decreased with age and increased with increasing education and richer socioeconomic quintiles. Males had higher utility values than females (0.89 vs 0.84; P < .001). Utility values declined by 0.007 with each year increase in age (P < .001) and statistically significant differences (P < .05) in utility were found by ethnicity, socioeconomic quintile, and disease conditions such as stroke, diabetes, cancer, depression, and musculoskeletal conditions, using a tobit regression.

CONCLUSIONS

This study provides the first nationally representative set of population norms based on a local value set for key demographic groups and selected chronic disease conditions for Sri Lanka. It also provides a catalog that can be easily used to calculate quality-adjusted life-years for cost-utility analysis when modeling public health interventions.

Norms for the EQ-5D-5L among the general adult population in Alberta, Canada

PURPOSE

To present EQ-5D-5L population norms for the general adult population in Alberta, Canada.

METHODS

We analyzed data from 11 population-based surveys conducted in Alberta between 2012 and 2021. By applying appropriate sampling weights, we estimated normative data for the EQ-5D-5L dimensions, index scores, and visual analogue scale (VAS) scores. This analysis was conducted for the overall population as well as for subgroups categorized by age, sex, provincial health zones, and 17 chronic conditions.

RESULTS

The analysis included data from 60,447 respondents (ages 18-99; 51.4% female) across various survey waves, revealing minimal variations in sample characteristics and EQ-5D-5L scores over time. The most frequently reported problems were pain/discomfort (62.2%) and anxiety/depression (41.7%), while 22.5% of respondents reported no issues on any dimension. The mean (SD) EQ-5D-5L index score was 0.845 (0.137), and the mean EQ VAS score was 77.4 (16.7). There was a notable increase in the proportion of reported problems across all dimensions with age, except for anxiety/depression, which showed a decline with advancing age. Females reported slightly more problems across all dimensions compared to males. Individuals with chronic pain had the lowest EQ-5D-5L index scores, followed by those with anxiety and depression, while the lowest EQ VAS scores were observed in individuals with congestive heart failure, kidney disease, and chronic obstructive pulmonary disease.

CONCLUSION

This study provides EQ-5D-5L norms for the adult population in Alberta. These reference values can be used to benchmark patients' outcomes as well as to establish burden of illness in this population and facilitate the interpretation of EQ-5D-5L scores in various applications.

The immediate effects of mobilization with movement on shoulder range of motion and pain in patients with rotator cuff-related shoulder pain: A randomized controlled trial (Evolution Trial)

BACKGROUND

Mobilization with movement (MWM) is commonly used to treat patients with rotator cuff-related shoulder pain (RCRSP). However, the evidence supporting MWM efficacy for improving range of motion (ROM) and pain in patients with RCRSP is limited.

OBJECTIVES

To assess the immediate effects of MWM on the angular onset of pain in patients with RCRSP.

METHODS

Sixty-three participants with RCRSP were randomized to receive 3 sets of 10 repetitions of MWM or sham MWM with a minute rest between each set. The angular onset of pain (primary outcome), and pain intensity at rest and during shoulder abduction to the onset of pain were measured at baseline, and after receiving the 1st and 3rd sets of 10 repetitions of interventions. Other secondary outcomes were measured at baseline and after receiving 3 sets of 10 repetitions of interventions or 1, 2, 3, 5, and 7 days after interventions.

RESULTS

Compared with the sham MWM group, the MWM group had an additional improvement of 6.5° (95% CI -0.9, 13.9) and 13.7° (95% CI 6.3, 21.1) (from baseline) after receiving the 1st and 3rd sets of 10 repetitions of interventions, respectively.

CONCLUSION

MWM improves the angular onset of pain after 3 sets of 10 repetitions of MWM in patients with RCRSP. This study provides preliminary support for the use of MWM in treating patients with RCRSP and provides some guidance for clinicians to decide the MWM dosage to be used in clinical practice.

EQ-5D-5L Population Scores in Mainland China: Results From a Nationally Representative Survey 2021

OBJECTIVES

There is a lack of monitoring changes in the population scores of the most recent version, EQ-5D-5L, in mainland China. This study aimed to address this knowledge gap by assessing the EQ-5D-5L scores in mainland China using a nationally representative sample.

METHODS

Data were extracted from the 2021 Survey of Health Index of Chinese Families, which covered 31 provinces/autonomous regions/municipalities in mainland China. The survey used a multistage quota sampling strategy encompassing 120 prefecture-level cities. Quotas were allocated to each prefecture-level city in accordance with the 2020 China Population Census. This approach resulted in a final sample of 11 030 eligible questionnaires. The utility index (UI) and EuroQol Visual Analog Scale (EQ VAS) scores were reported for the entire sample (age-gender-urban/rural weighted) and by the characteristics of the study participants.

RESULTS

The study participants had a weighted mean UI of 0.939 (SD 0.135) and EQ VAS score of 80.19 (SD 18.39). The most commonly reported problem was anxiety/depression (26.37%), whereas self-care was the least reported problem (6.18%). Those who were male, were younger, lived without chronic conditions and disabilities, had higher levels of education, earned higher monthly household income, and were covered by basic medical insurance for urban employees had higher scores in both the UI and EQ VAS.

CONCLUSION

This study revealed slightly lower UI scores despite a much higher drop in EQ VAS scores whereas China maintained minimum cases of COVID-19 in 2021 compared with the population norms recorded in 2019. Further studies are warranted to unveil the full impacts of COVID-19 outbreaks.

Health-related quality of life assessed by EQ-5D-5L and its determinants among Chinese adults

Background

Due to the rising standard of living and advances in public health and medical care in recent years in China, the health-related quality of life (HRQoL) has been increasingly acknowledged as an important part of health management of adults. This study aimed to analyze the HRQoL of Chinese adults and identify the influencing factors, proposing specific recommendations for improvement.

Methods

A cross-sectional study was conducted among 1,291 selected adults from four provinces spanning different regions in China aged ≥18 years from July 2021 and January 2022. The EuroQol-5D-5L (EQ-5D-5L) was used to conduct the HRQoL survey, and a general questionnaire was administered to collect demographic characteristics, general information, and health behaviors of participants. The health utility value was measured, and one-way analysis of variance was performed. The Tobit regression model was employed to analyze the factors influencing the HRQoL of Chinese adults.

Results

The mean health utility values and visual analog scale scores for adults were 0.9400 ± 0.1197 and 84.09 ± 14.392, respectively. Notably, 60.3% of respondents reported no difficulties in any of the five dimensions of EQ-5D. However, a substantial proportion faced challenges in anxiety/depression (27%) and pain/discomfort (26.2%). Tobit regression model revealed that age, marital status, educational level, diet, sleep, mental state, mood, and chronic diseases significantly impact the HRQoL of Chinese adults.

Conclusion

The HRQoL among Chinese adults is generally satisfactory, but pay particular attention on areas such as pain, psychological anxiety, chronic diseases, and negative emotions is needed. The factors such as stress associated with marriage and the demands of high-skilled occupations might influence the overall health of the population. According to our findings, public health strategies to improve HRQoL should be developed to promote relatively healthy environments and lifestyles for older adults. Moreover, proactive measures are crucial for mitigating the potential health impacts associated with marital stress and high-skilled employment.

EQ-5D-5L Population Norms for China Derived From a National Health Survey

OBJECTIVES

To develop the EQ-5D-5L (5L) population norms for China and to assess the relationship between various factors and 5L data.

METHODS

This study used data derived from the Psychology and Behavior Investigation of Chinese Residents, a national sample survey of 21 909 representative participants aged 12 years and above. Participants' health-related quality of life (HRQoL) was measured by the 5L. Their socioeconomic characteristics, behavioral factors, and health conditions were also obtained from the survey. Norm scores were generated and compared for different socioeconomic variables. Multiple linear and logistic regressions were used to assess the relationships of the 3 kinds of variables with the 5L utility, visual analog scale (VAS) scores and 5L health problems.

RESULTS

The mean (SD) age of participants was 39.4 (18.9) years, and 50.0% of them were female. The mean (SD) utility and VAS scores were 0.940 (0.138) and 73.4 (21.6), respectively. Participants reported considerably more problems in anxiety/depression (26.2%) and pain/discomfort (22.2%) dimensions. The gender difference in HRQoL is attenuated. The participants older than 75 years suffered from a sharp decline in HRQoL; the participants in Shanghai and Tibet provinces reported lower utility and VAS scores and more health problems. Those who were younger, with better socioeconomic status and healthier lifestyles, and without diseases tended to report higher utility and VAS scores and fewer health problems.

CONCLUSIONS

This study derived the 5L population norms for China based on a representative population sample.

Health outcomes and healthcare utilization associated with four undiagnosed chronic conditions: evidence from nationally representative survey data in Sri Lanka

Background

Low awareness of chronic conditions raises the risk of poorer health outcomes and may result in healthcare utilization and spending in response to symptoms of undiagnosed conditions. Little evidence exists, particularly from lower-middle-income countries, on the health and healthcare use of undiagnosed people with an indication of a condition. This study aimed to compare health (physical, mental, and health-related quality of life (HRQoL)) and healthcare (inpatient and outpatient visits and out-of-pocket (OOP) medical spending) outcomes of undiagnosed Sri Lankans with an indication of coronary heart disease (CHD), hypertension, diabetes, and depression with the outcomes of their compatriots who were diagnosed or had no indication of these conditions.

Methods

This study used a nationally representative survey of Sri Lankan adults to identify people with an indication of CHD, hypertension, diabetes, or depression, and ascertain if they were diagnosed. Outcomes were self-reported measures of physical and mental functioning (12-Item Short Form Survey (SF-12)), HRQoL (EQ-5D-5L), inpatient and outpatient visits, and OOP spending. For each condition, we estimated the mean of each outcome for respondents with (a) no indication, (b) an indication without diagnosis, and (c) a diagnosis. We adjusted the group differences in these means for socio-demographic covariates using ordinary least squares (OLS) regression for physical and mental function, Tobit regression for HRQoL, and a generalized linear model (GLM) for healthcare visits and OOP spending.

Results

An indication of each of CHD and depression, which are typically symptomatic, was associated with a lower adjusted mean of physical (CHD -2.65, 95% CI -3.66, -1.63; depression -5.78, 95% CI -6.91, -4.64) and mental functioning (CHD -2.25, 95% CI -3.38, -1.12; depression -6.70, 95% CI -7.97, -5.43) and, for CHD, more annual outpatient visits (2.13, 95% CI 0.81, 3.44) compared with no indication of the respective condition. There were no such differences for indications of hypertension and diabetes, which are often asymptomatic.

Conclusions

Living with undiagnosed CHD and depression was associated with worse health and, for CHD, greater utilization of healthcare. Diagnosis and management of these symptomatic conditions can potentially improve health partly through substitution of effective healthcare for that which primarily responds to symptoms.

Supplementary Information

The online version contains supplementary material available at 10.1186/s44263-024-00075-0.

Health-related quality of life measured using the EQ-5D-3L: iranian population norms

BACKGROUND

Normative values are valuable for comparing a specific population with the general population, making them particularly useful in disease burden studies and cost-effectiveness analysis. The objective of this study was to estimate HRQoL normative values for the EQ-5D measure in Iran.

METHODS

The analysis was performed using a sample (n = 27,704) of the Iranian adult population, which was extracted from a nationwide survey conducted in 2021. Participants assessed their health-related quality of life using the EQ-5D-3 L instrument and a visual analogue scale (EQ VAS). Multivariable regression analyses were performed to examine the relationships between utility scores, EQ VAS scores, and various socio-demographic factors.

RESULTS

The mean utility and EQ VAS scores of the total sample were 0.87 (95% CI: 0.86, 0.88) and 72.9 (95% CI: 72.7, 73.1), respectively. Almost half of the respondents (46.8%) reported a health state without any problems. The most prevalent problems were pain/discomfort (38.3%) and anxiety/depression (35.2%). Furthermore, EQ-5D values and EQ VAS scores were associated with gender, age, employment status, education level, marital status, and chronic illness.

CONCLUSIONS

This study provided normative values for the general population in Iran. Policymakers and researchers can use these values as a reference for population norms in economic assessments and studies focusing on the population's health.

EQ-5D-3L and EQ-5D-5L population norms for Thailand

BACKGROUND

The previous Thai norm-based scores for the EQ-5D-5L were established with Thai general population samples aged 20-70 years in 2019. Nevertheless, these values need to be updated after the COVID-19 pandemic because of its effects on both physical and mental health. This study therefore aimed to establish population norms of the Thai EQ-5D-3L, EQ-5D-5L and EQ-VAS scores as well as to estimate disutility values associated with self-reported main diseases.

METHODS

Individual face-to-face interviews were conducted with 2000 adult (age ≥ 18 years) members of the general Thai population to estimate norm-based scores. Each participant completed the EQ-5D-3L and EQ-5D-5L as well as questions related to their sociodemographic factors and self-reported main diseases. Responses to the two instruments were converted to health utility (HU) scores on the basis of available value sets. Descriptive statistics were used to report the norm-based scores stratified by age and sex categories. Response redistribution determining the response consistency between EQ-5D versions was investigated. The HU score agreement from those two instruments was investigated using intraclass correlation coefficient (ICC). Tobit regression models were employed to investigate the relationships between sociodemographic factors and HU and EQ-VAS scores. Moreover, it was used to estimate the disutility values associated with self-reported main diseases.

RESULTS

The means (percentage of ceiling effects) of EQ-5D-3L, EQ-5D-5L, and EQ-VAS scores were 0.845 (57.80%), 0.923 (49.05%), and 79.83 (3.20%), respectively. The average percentage of inconsistent response was 1.09%. A good agreement level was found between both EQ-5D versions with the ICCs of 0.789 (95% CI: 0.558-0.878). Female, older, and unemployed participants and those with BMI ≥ 30 reported lower EQ-5D-3L and EQ-5D-5L than their counterparts. Bone/Joint disorder and stroke contributed to the largest disutility value for those two instruments.

CONCLUSIONS

The Thai norm-based scores from those two instruments were diminished when advancing age and among female, unemployed, and obese (BMI ≥ 30) participants. It is expected to provide information to policy makers to better allocate health care resources to those with diminished norm-based scores.

Australian population norms for health-related quality of life measured using the EQ-5D-5L, and relationships with sociodemographic characteristics

BACKGROUND

Measuring health related quality-of-life (HRQoL) of the general population is essential to establish a reference for health outcome evaluations. This study sought to establish EQ-5D-5L population norms in Australia and to investigate the heterogeneity of HRQoL between sociodemographic variables.

METHODS

A cross-sectional study comprising of a representative sample of Australia's general population (n = 9958) aged 18 or older. Recruitment quotas were set for the Australian census population by age, sex, state/territory of residence and rurality. Participants were recruited by Qualtrics through its database of over 800,000 registered panel members and asked to value their own state of health using the EQ-5D-5L domains and the EuroQol-Visual Analogue Scale (EQ-VAS). An Australian value set developed using Discreet Choice Experiment was used to calculate utility scores.

RESULTS

The estimated mean EQ-5D-5L index for Australia's general population was 0.86 (standard deviation [SD] 0.19), and the EQ-VAS score was estimated as 73.2 (SD 21.7). 23.9% of the study population reported being in the best health state (11,111). Younger people, current smokers, people who are unemployed and people with more financial stress reported a lower EQ-5D-5L index score (p < 0.001). Residents in the major cities, inner regional and outer regional Australia reported higher health utility scores than those residing in remote and very remote Australia.

CONCLUSIONS

This is the first Australian study to apply the EQ-5D-5L in a nationally representative sample. The EQ-5D-5L Australian population norms obtained can be used as reference scores for future population health evaluations and comparisons. The findings facilitate a national reference for clinical, economic, and policy decision-making processes and provide a fuller understanding of the Australian population's HRQoL.

Health-related quality of life assessed by EQ-5D-5L and its determinants among rural adults: result from the Henan rural cohort study

OBJECTIVES

Evidence on the health-related quality of life (HRQoL) among Chinese rural populations and its influence factors were limited. This study aimed to describe the distribution of HRQoL assessed by EQ-5D-5L and its determinants among a Chinese rural population.

METHODS

A total of 23,510 eligible participants (9542 men and 13,968 women) from the Henan rural cohort study were included. Tobit regression and generalized linear models were performed to investigate the associations between demographic characteristics, lifestyle factors, common chronic diseases, and HRQoL.

RESULTS

Of all respondents, the most frequently reported problem was pain/discomfort dimension (23.05%), followed by mobility (12.72%), anxiety/depression (7.77%), and usual activities (6.45%), while the least reported was the self-care dimension (3.84%). The more problems reported in all dimensions with age increased except anxiety/depression. The mean (standard deviation) utility index and VAS score were 0.954 (0.111) and 78.34 (14.80), respectively. The regression analysis indicated that increasing age, former drinkers, poor sleep quality, and suffering from common chronic diseases were significantly associated with low HRQoL, while high education level, average monthly income, and physical activity were significantly associated with high HRQoL.

CONCLUSION

This study described the distribution of HRQoL and its influence factors among the Chinese rural population, which was helpful for medical institutions and policymakers to allocate medical resources and better understand HRQoL among the Chinese rural population.

Canada population norms for the EQ-5D-5L

OBJECTIVE

In Canada, population norms are only available for 2 provinces, Alberta and Quebec. The objective of this study was to derive the population norms for the EQ-5D-5L based on a representative sample of the Canadian general population.

METHODS

Data from the Canadian EQ-5D-5L valuation study, a cross-sectional study, were used. A quota sampling method was used to recruit a representative sample of the Canadian general population in terms of age, sex, and education. EQ-5D-5L utilities and EQ VAS were summarized using descriptive statistics and the impact of demographic characteristics on the EQ-5D-5L utilities was evaluated using statistical hypothesis testing and Tobit regression.

RESULTS

1207 eligible participants were included in the analysis. Pain/discomfort (53.1%) was the most frequently reported domain with any problem, and self-care (7.6%) domain was the least. The mean (standard deviation [SD]) EQ-5D-5L utility was 0.864 (0.121) and the mean (SD) EQ VAS was 82.3 (14.23). The highest mean EQ-5D-5L utility was 0.881 in age group 25-34 while the lowest was 0.839 in age group 55-64. Participants who had full-time employment, were married, a higher annual household income and no chronic health conditions had significantly higher EQ-5D-5L utilities.

CONCLUSION

This article reports the first Canadian population norms for the EQ-5D-5L and can be used as population references for economic evaluations and clinical research.

Development and validation of TreatHSP-QoL: a patient-reported outcome measure for health-related quality of life in hereditary spastic paraplegia

BACKGROUND

Hereditary spastic paraplegia (HSP) is a rare neurodegenerative disease that lacks specific and validated patient-centered outcome measures (PCOMs). We aimed to develop and validate a health-related quality of life (HRQoL) questionnaire specific to HSP ("TreatHSP-QoL") that could be used as a PCOM.

RESULTS

The pilot-items of the TreatHSP-QoL (45 five-level Likert scale items, with values per item between 0 and 4) were developed based on a qualitative data analysis of 54 semi-structured interviews, conducted in person with 36 HSP patients and 18 caregivers. It was then reduced and modified through the validation process to 25 items. The main validation was performed using the online questionnaire in 242 HSP patients and 56 caregivers. The exploratory factor analysis defined five subdomains. Cronbach's alpha ranged from 0.57 to 0.85 for the subdomains and reached 0.85 for the total score. The test-retest Pearson correlation reached 0.86 (95% Confidence Interval (CI) [0.79, 0.91]). Pearson correlations with the EuroQol-5 Dimension (5 levels) (EQ-5D-5L) and Friedreich Ataxia Rating Scale-Activities of Daily Living (FARS-ADL) questionnaires varied strongly among the subdomains, with the total scores reaching 0.53 (95% CI [0.42, 0.61]) and -0.45 (95% CI [- 0.55, - 0.35]), respectively. The caregiver-patient response Pearson correlation ranged between 0.64 and 0.82 for subdomains and reached 0.65 (95% CI [0.38, 0.81]) for the total score.

CONCLUSIONS

TreatHSP-QoL can be used in high-quality clinical trials and clinical practice as a disease-specific PCOM (i.e., HRQoL measure) and is also applicable as a proxy questionnaire. Score values between 0 and 100 can be reached, where higher value represents better HRQoL. The Pearson correlations to the EQ-5D-5L and FARS-ADL support the additional value and need of HSP-specific PCOM, while non-specific QoL-assessment and specific clinical self-assessment tools already exist. All in all, the results demonstrate good validity and reliability for this new patient-centered questionnaire for HSP.

EQ-5D-5L Portuguese population norms

OBJECTIVES

The EQ-5D-5L is a generic preference-based quality-of-life measure for which the corresponding Portuguese population value set was only recently developed. This study sought to establish EQ-5D-5L population norms for Portugal and to identify significant relationships with sociodemographic variables.

METHODS

The research was based on a representative sample of Portugal's general population (n = 1006) aged 18 or older. The sample was stratified by gender, age group, and geographical region. The respondents were interviewed by telephone and asked to value their own state of health using both the EQ-5D-5L description system and the EuroQol-Visual Analogue Scale (EQ VAS).

RESULTS

The estimated mean EQ-5D-5L index for Portugal's general population is 0.887 (standard error [SE] = 0.0051), and the EQ VAS score was estimated as 76.0 (SE = 0.640). One-third of the population reported being in the best health state (11111). Women, individuals 70 years old or more and people with low education or a chronic disease reported a lower EQ-5D-5L index score (p < 0.001). Residents in the Azores and the Algarve reported higher health utility scores.

CONCLUSIONS

The EQ-5D-5L Portuguese population norms obtained can be used as reference scores. These norms are consistent with other countries' population norms. The findings facilitate clinical, economic, and policy decision-making processes and provide a fuller understanding of the Portuguese population's health-related quality of life.

Decomposing income-related inequality in health-related quality of life in mainland China: a national cross-sectional study

INTRODUCTION

Health equity is an important indicator measuring social development and solidarity. However, there is a paucity in nationwide studies into the inequity in health-related quality of life (HRQoL) in mainland China, in particular using the most recent data measuring HRQoL using the EuroQol 5-Dimension-5 Level (EQ-5D-5L). This study aimed to address the gap in the literature by estimating and decomposing income-related inequality of the utility index (UI) of EQ-5D-5L in mainland China.

METHODS

Data were extracted from the Psychology and Behaviour Investigation of Chinese Residents (2022), including 19 738 respondents over the age of 18 years. HRQoL was assessed by the UI of the EQ-5D-5L. Concentration index (CI) was calculated to measure the degree of income-related inequality in the UI. The contributions of individual, behavioural and context characteristics to the CI were estimated using the Wagstaff decomposition method.

RESULTS

The CI of the EQ-5D-5L UI reached 0.0103, indicating pro-rich inequality in HRQoL. Individual characteristics made the greatest contribution to the CI (57.68%), followed by context characteristics (0.60%) and health behaviours (-3.28%). The contribution of individual characteristics was mainly attributable to disparities in the enabling (26.86%) and need factors (23.86%), with the chronic conditions (15.76%), health literacy (15.56%) and average household income (15.24%) as the top three contributors. Educational level (-5.24%) was the top negative contributor, followed by commercial (-1.43%) and basic medical insurance (-0.56%). Higher inequality was found in the least developed rural (CI=0.0140) and western regions (CI=0.0134).

CONCLUSION

Pro-rich inequality in HRQoL is evident in mainland China. Targeted interventions need to prioritise measures that aim at reducing disparities in chronic conditions, health literacy and income.

Health-related quality of life and willingness to pay measurement among patients on warfarin in Thailand

BACKGROUND

Complex dosage regimens and the high incidence of adverse events associated with warfarin therapy can affect the health-related quality of life (HRQoL) and willingness to pay (WTP) among patients on warfarin. No such previous study has been conducted to assess the HRQoL and WTP among Thai patients on warfarin; therefore, this study aimed to measure these parameters and identify some sociodemographic factors associated with those aspects among patients on warfarin in Thailand.

METHODS

This cross-sectional survey study involving 260 patients on warfarin between June 2022 and June 2023 used a quantitative method for data collection. Face-to-face interviews with well-trained interviewers were conducted and patients were required to complete the questionnaires of both World Health Organization Quality of Life-BREF (WHOQOL-BREF) and EQ-5D-5L to assess and measure their HRQoL levels. WTP was assessed using a bidding game technique. Descriptive statistics with mean and standard deviations were used to report HRQoL scores and WTP, whereas a generalized linear model was employed to identify factors associated with both HRQoL and WTP.

RESULTS

The mean EQ-5D index and mean EQ-VAS score were 0.89 ± 0.15 and 76.92 ± 15.95, respectively, whereas the mean WHOQOL-BREF domain scores were 59.18 ± 14.13, 68.56 ± 15.47, 59.13 ± 19.64, and 65.23 ± 14.04 for the physical, psychological, social, and environmental domains, respectively. Elderly participants (age > 60 years) and those with comorbidities had lower HRQoL scores than their counterparts. The mean WTP was 22.25 ± 32.19 USD for one patient's visit. The presence of comorbidities was the only factor significantly associated with WTP values.

CONCLUSIONS

Thai patients on warfarin have lower mean EQ-5D indexes and EQ-VAS scores than members of the general Thai population. Patients on warfarin with comorbidities have diminished HRQoL and WTP values. Therefore, all healthcare professionals should pay more attention to this group of patients on warfarin to achieve better outcomes.

Initial effect of high-volume mobilisation with movement on shoulder range of motion and pain in patients with rotator cuff-related shoulder pain: protocol for a randomised controlled trial (Evolution Trial)

INTRODUCTION

Mobilisation with movement (MWM) is commonly used for treating patients with rotator cuff-related shoulder pain (RCRSP). However, the evidence supporting MWM efficacy for improving shoulder range of motion (ROM) and pain in patients with RCRSP is limited. It is also unclear whether higher volume MWM leads to better clinical outcomes compared with lower volume MWM in patients with RCRSP. The primary aim of this study is to assess the effect of MWM on the angular onset of pain during shoulder abduction in patients with RCRSP.

METHODS AND ANALYSIS

Sixty participants with RCRSP will be randomised to receive either MWM or sham MWM intervention. The primary outcome is the angular onset of pain during shoulder abduction, and secondary outcomes are pain intensity at the angular onset of pain during shoulder abduction, maximum shoulder ROM, pain intensity during maximum shoulder abduction, pressure pain threshold, mechanical temporal summation, global rating of change scale (GROC) and Brief Pain Inventory-Short Form (BPI-SF). The angular onset of pain and the pain intensity at that range will be assessed at baseline, after 1 set and 3 sets of 10 repetitions of MWM or sham MWM. The GROC will be measured immediately after receiving 3 sets of interventions and on day 3 after interventions. The BPI-SF will be measured on days 1, 3, 5 and 7 after interventions. Other secondary outcomes will be assessed at baseline and after 3 sets of interventions. A linear mixed effects model with a random intercept will be used to compare changes in the outcome measures between MWM and sham MWM interventions.

ETHICS AND DISSEMINATION

This study has been approved by the University of Otago Ethics Committee (Ref. H21/117). Findings from this study will be disseminated through presentations at international and national conferences and will be submitted for publication in a peer-reviewed journal.

TRIAL REGISTRATION NUMBER

ACTRN 12621001723875.

Test-retest reliability of movement-evoked pain and sensitivity to movement-evoked pain in patients with rotator cuff-related shoulder pain

BACKGROUND

The number of researchers and clinicians using movement-evoked pain and sensitivity to movement-evoked pain to assess shoulder pain has increased. However, the intrarater test-retest reliability of movement-evoked pain and sensitivity to movement-evoked pain in people with rotator cuff-related shoulder pain (RCRSP) is still unknown.

OBJECTIVE

We examined the intrarater test-retest reliability of movement-evoked pain and sensitivity to movement-evoked pain in participants with RCRSP.

METHODS

Seventy-four participants with RCRSP performed five trials of active shoulder abduction to elicit pain under two experimental conditions: active shoulder abduction to the onset of pain and maximum range of motion (ROM). The primary outcome measures were pain intensity and ROM. Test-retest reliability of movement-evoked pain and sensitivity to movement-evoked pain was examined using intraclass correlation coefficient (ICC3,1) and minimal detectable change (MDC90).

RESULTS

The reliability of movement-evoked pain under both experimental conditions was good to excellent (ICC: 0.81 to 0.95), while the reliability of sensitivity to movement-evoked pain was poor in both conditions (ICC≤0.45). The MDC90 for pain intensity was 1.6 and 1.8 during shoulder abduction to the onset of pain and maximum ROM, respectively. The MDC90 for ROM was 17.5° and 11.2° during shoulder abduction to the onset of pain and maximum ROM condition, respectively.

CONCLUSION

This study confirms movement-evoked pain testing during active shoulder abduction to the onset of pain or maximum ROM condition is reliable to assess pain associated with movement in patients with RCRSP. The minimal detectable change score of movement-evoked pain can guide clinicians and researchers on how to interpret changes in these outcomes.

Health-related quality of life 12 years after injury: prevalence and predictors of outcomes in a cohort of injured Māori

PURPOSE

Studies have found that many people who sustain an injury can experience adverse outcomes for a considerable time thereafter. Māori, the Indigenous peoples of Aotearoa me Te Waipounamu (New Zealand; NZ), are no exception. The Prospective Outcomes of Injury Study (POIS) found that almost three-quarters of Māori participants were experiencing at least one of a range of poor outcomes at two years post-injury. The aim of this paper was to estimate the prevalence, and identify predictors, of adverse health-related quality of life (HRQoL) outcomes in the POIS-10 Māori cohort, 12 years after participants sustained an injury.

METHODS

Interviewers reached 354 individuals who were eligible to participate in a POIS-10 Māori interview, to be conducted a decade after the last phase of POIS interviews (held 24 months post-injury). The outcomes of interest were responses to each of the five EQ-5D-5L dimensions at 12 years post-injury. Potential predictors (i.e., pre-injury sociodemographic and health measures; injury-related factors) were collected from earlier POIS interviews. Additional injury-related information was collected from administrative datasets proximate to the injury event 12 years prior.

RESULTS

Predictors of 12-year HRQoL outcomes varied by EQ-5D-5L dimension. The most common predictors across dimensions were pre-injury chronic conditions and pre-injury living arrangements.

CONCLUSION

An approach to rehabilitation where health services proactively enquire about, and consider the broader aspects of, patient health and wellbeing throughout the injury recovery process, and effectively coordinate their patients' care with other health and social services where necessary, may help improve long-term HRQoL outcomes for injured Māori.

Describing the health-related quality of life of Māori adults in Aotearoa me Te Waipounamu (New Zealand)

PURPOSE

In Aotearoa me Te Waipounamu (New Zealand; NZ) there are considerable inequities in health status and outcomes for Māori, the Indigenous peoples of NZ. It is therefore important that the health status and preferences of Māori are specifically considered in healthcare policy and decision making. This paper describes the health-related quality of life of 390 Māori adults who took part in the NZ EQ-5D-5L valuation study.

METHODS

Responses on the five dimensions of the EQ-5D-5L were dichotomised into "no problems" and "any problems", summarised and disaggregated by age group. Mean preference weights were reported by age group and overall. Mean utility values (calculated by applying each participant's preference weights to their EQ-5D-5L profile) were summed and respective means and standard deviations reported by age, chronic disease status and disability.

RESULTS

The EQ-5D-5L dimensions with the highest proportion of participants reporting any problems were pain/discomfort (61.5%) and anxiety/depression (50%). The most commonly-reported chronic disease was mental illness/distress (24.6%). Anxiety/depression ranked as the most important dimension, with usual activities, the least important. The mean utility value was 0.83 with the lowest value (0.79) found in the 18-24 and 45-54 age groups. For participants with at least one chronic disease the mean utility value was 0.76 compared to 0.91 for those with none.

CONCLUSION

To reduce inequities experienced by Māori it is crucial that the health status of Māori and the values Māori place on health-related quality of life are properly understood. This can only be achieved using Māori-specific data.

EQ-5D-5L Population Norms for Italy

OBJECTIVES

This study aimed to provide normative data obtained in response to the EQ-5D-5L questionnaire in Italy and compare this with data from other countries.

METHODS

A sample of the Italian adult population (aged ≥ 18 years) was recruited and interviewed online using videoconferencing software (Zoom) between November 2020 and February 2021. The distribution of answers was estimated as per the descriptive system of the EQ-5D-5L, and descriptive statistics were calculated for the EQ VAS score and EQ-5D-5L index value in the whole sample and relevant subgroups. An ordinary least square (OLS) regression was performed to evaluate the impact of sociodemographic variables on EQ-5D-5L results. Lastly, a comparison was made with EQ-5D-5L population norms of other countries. Data analysis was performed using Microsoft Excel and Stata 13.

RESULTS

Overall, 1182 people representative of the Italian population (2020) in terms of sex and geographical area responded to the survey. Of the 3125 potential EQ-5D-5L health states, only 106 (3.4%) were selected, and the '11111' and '11112' states were chosen by half of the participants. In terms of EQ-5D-5L dimensions, the frequency of any problems (from slight to extreme) associated with anxiety and depression was high among the very young (18-24 years, 56.0%) and in women of all ages (49.7%). The mean index value (± standard deviation [SD]) was 0.93 (± 0.11) for the entire sample and gradually decreased with age, moving from 0.95 (± 0.06) in the youngest group (18-24 years) to 0.91 (± 0.13) in the oldest age group (≥ 75 years). Similarly, the mean EQ VAS score (± SD) was 81.8 (± 13.5), and decreased from 87.0 (± 8.9) in the 18-24 years age group to 75.1 (± 16.4) among participants > 75 years of age. The existence of self-reported chronic conditions (e.g., cardiovascular disease), female sex, and social assistance recipiency were negatively associated with the EQ-5D index value, while the EQ VAS score was significantly lower in people with chronic conditions and aged > 55 years. Conversely, higher income levels had a positive impact on both the EQ-5D index value and the EQ VAS score. Lastly, both the EQ-5D index value and EQ VAS score in Italy were, on average, higher than in most European countries.

CONCLUSIONS

EQ-5D-5L population norms provide useful insights into the health status of the Italian population and can be used as a reference for other surveys using the same instrument.

Using the EQ-5D-5L to investigate quality-of-life impacts of disease-modifying therapy policies for people with multiple sclerosis (MS) in New Zealand

BACKGROUND

Health state utilities (HSU) are a health-related quality-of-life (HRQoL) input for cost-utility analyses used for resource allocation decisions, including medication reimbursement. New Zealand (NZ) guidelines recommend the EQ-5D instruments; however, the EQ-5D-5L may not sufficiently capture psychosocial health. We evaluated HRQoL among people with multiple sclerosis (MS) in NZ using the EQ-5D-5L and assessed the instrument's discriminatory sensitivity for a NZ MS cohort.

METHODS

Participants were recruited from the NZ MS Prevalence Study. Participants self-completed a 45-min online survey that included the EQ-5D-5L/EQ-VAS. Disability severity was classified using the Expanded Disability Status Scale (EDSS) to categorise participant disability as mild (EDSS: 0-3.5), moderate (EDSS: 4.0-6.0) and severe (EDSS: 6.5-9.5). Anxiety/depression were also measured using the Hospital Anxiety and Depression Score (HADS). In the absence of an EQ-5D-5L NZ tariff, HSUs were derived using an Australian tariff. We evaluated associations between HSUs and participant characteristics with linear regression models.

RESULTS

254 participants entered the study. Mean age was 55.2 years, 79.5% were female. Mean (SD) EQ-5D-5L HSU was 0.58 (0.33). Mean (SD) HSUs for disability categories were: mild 0.80 ± 0.17, moderate 0.57 ± 0.21 and severe 0.14 ± 0.32. Twelve percent reported HSU = 1.0 (i.e., no problems in any domain). Participants who had never used a disease-modifying therapy reported a lower mean HSU. Multivariable modelling found that the HADS anxiety score was not associated with EQ-5D-5L.

CONCLUSIONS

HRQoL for people with MS in NZ was lower than comparable countries, including Australia. We suggest a comparison with other generic tools that may have improved sensitivity to mental health.

Population Norms for SF-6Dv2 and EQ-5D-5L in China

OBJECTIVES

To derive the population norms for EQ-5D-5L and SF-6Dv2 among the Chinese general population.

METHODS

Data collected alongside the Chinese SF-6Dv2 valuation study conducted between June and September 2019 were used. SF-6Dv2 and EQ-5D-5L, as well as social-demographic characteristics and self-reported chronic conditions, were collected through face-to-face interviews among a representative sample of the general population stratified by age, gender, education, and area of residence (urban/rural) in China. SF-6Dv2 and EQ-5D-5L responses were converted to utility values using the corresponding Chinese value sets. Utility values for both measures and EQ VAS scores were summarized by age and gender, and then described by different social-demographic characteristics and chronic conditions.

RESULTS

A total of 3397 respondents (51.2% male, age range 18-90 years) were included. 420 (12.4%) and 1726 (50.8%) respondents reported no problems on all SF-6Dv2 and EQ-5D-5L dimensions, respectively. The mean [standard deviation (SD)] utility values were 0.827 (0.143) for SF-6Dv2 and 0.946 (0.096) for EQ-5D-5L. The mean (SD) EQ VAS score was 87.1 (11.5). Respondents who resided in rural areas, were married, and were employed had higher utility values. Respondents with memory-related diseases or stroke had lower utility values than those with other chronic conditions. Utility values decreased with the increase in the number of chronic conditions.

CONCLUSION

This study reports the first Chinese population norms for the EQ-5D-5L and SF-6Dv2 derived using a representative sample of the Chinese general population. The norms can be used as references for economic evaluations and healthcare decision-making in China.