Use of the visual analogue scale for health state valuation: a scoping review

OBJECTIVES

The visual analogue scale (VAS) has been used in the context of health and healthcare for various purposes, for example, to measure pain and to provide a single-index measure of health-related quality of life (HRQoL). This scoping review aims to describe how the VAS has been used for health state valuation in the published literature.

METHODS

The search was carried out in Medline, Web of Science and PsycInfo. The findings of the included articles were tabulated and presented descriptively using frequencies and proportions.

RESULTS

The database search yielded 4856 unique articles, out of these, 308 were included. In 83% of the articles, the main purpose for using a VAS was to value health states. The two most common perspectives when valuing health states with a VAS were hypothetical (44%) and own health (34%). Some (n = 14) articles used the VAS in the context of economic evaluations, including calculating quality-adjusted life years (QALYs). A large variation in the design of the VAS was found, including the description of the lower and upper anchors. Advantages and disadvantages with using a VAS were mentioned in 14% of the included articles.

CONCLUSION

The VAS has been a common method for valuing health states, both as a stand-alone method and in combination with other valuation methods. Despite its widespread use, the design of the VAS has been inconsistent which makes comparison of results across studies challenging. Further research on the role of using the VAS in economic evaluations is warranted.

Experience-based health state valuation using the EQ VAS: a register-based study of the EQ-5D-3L among nine patient groups in Sweden

BACKGROUND

The EQ VAS component of the EQ-5D questionnaire has been used to assess patients' valuation of their own health besides its use for self-reporting of overall health status. The objective of the present study was to identify patients' valuation of EQ-5D-3L health states using the EQ VAS in different patient groups over time and in comparison to the general population.

METHODS

Data were obtained from patients from nine National Quality Registers (n = 172,070 patients) at baseline and at 1-year follow-up and compared with data from the general population (n = 41,761 participants). The correlation between EQ VAS scores and EQ-5D-3L index based on the Swedish experience-based VAS value set was assessed. Ordinary least squares (OLS) regression models were used to determine the association between EQ-5D-3L dimensions and EQ VAS valuation.

RESULTS

EQ VAS scores showed consistency with severity of health states both at baseline and at 1-year follow-up in the nine selected EQ-5D-3L health states. The regression models showed mostly consistent decrements by severity levels in each dimension at both time points and similar to the general population. The dimension mainly associated with inconsistency was the self-care severity level three. Problems in the anxiety/depression dimension had the largest impact on overall health status in most of the patient groups and the general population.

CONCLUSION

The study has demonstrated the important role EQ VAS can play in revealing patients' valuation of their health and showed the variation in valuation of EQ-5D-3L dimensions and levels of severity across different patient groups.

Socio-demographic indicators of self-reported health based on EQ-5D-3L: A cross-country analysis of population surveys from 18 countries

Background

Generic health-related quality of life instruments, such as the EQ-5D, are increasingly used by countries to monitor population health via general population health surveys. Our aim was to demonstrate analytic options to measure socio-demographic differences in self-reported health using the EuroQol Group's archive of EQ-5D-3L population surveys that accumulated over the past two decades.

Methods

Analyses captured self-reported EQ-5D-3L data on over 100,000 individuals from 18 countries with nationally representative population surveys. Socio-demographic indicators employed were age, sex, educational level and income. Logistic regression odds ratios and the health concentration index methodology were used in the socio-demographic analysis of EQ-5D-3L data.

Results

Statistically significant socio-demographic differences existed in all countries (p < 0.01) with the EQ VAS based health concentration index varying from 0.090 to 0.157 across countries. Age had generally the largest contributing share, while educational level also had a consistent role in explaining lower levels of self-reported health. Further analysis in a subset of 7 countries with income data showed that, beyond educational level, income itself had an additional significant impact on self-reported health. Among the 5 dimensions of the EQ-5D-3L descriptive system, problems with usual activities and pain/discomfort had the largest contribution to the concentration of overall self-assessed health measured on the EQ VAS in most countries.

Conclusion

The EQ-5D-3L was shown to be a powerful multi-dimensional instrument in the analyses of socio-demographic differences in self-reported health using various analytic methods. It offered a unique insight of inequalities by health dimensions.

Patient-reported outcomes among patients undergoing total hip replacement in an integrated care system and in a standard care system in Region Stockholm, Sweden

BACKGROUND

Coordination, cooperation and efficient use of resources is vital for the health- and social care sector if it is to meet the needs of an aging population. Integrated care is a patient-centred approach to provision of care aiming to improve quality of care and overcome fragmented care through co-productive partnerships and may positively affect quality of care and health outcomes, especially among those in need of highly coordinated care services.

AIM

To compare patient-reported outcomes (PROs) among patients undergoing total hip replacement (THR) in the integrated care system in Norrtälje Municipality and in the standard care system in other municipalities in Region Stockholm, Sweden.

METHODS

Swedish Hip Arthroplasty Register PRO data during 2008-2015 were compared 1 year after THR among patients (≥50 years) in integrated care (n = 407) and standard care (n = 3501) systems using linear (EQ VAS score), logistic (EQ-5D-3L dimensions) and negative binomial (hip pain VAS score) regressions. Analyses were adjusted for the preoperative factors age, sex, BMI, ASA class and type of incision.

RESULTS

1-year postoperatively, patients in the integrated care system did not report their health significantly different from patients receiving standard care. Exceptions: Female patients in integrated care reported less problems with self-care (OR:0.52; 0.29-0.96) and patients above 70 years reported more problems with mobility (OR: 1.37; 1.01-1.87).

CONCLUSION

No significant differences were found between the two care systems for postoperative PROs. A longer follow-up time and analyses by socioeconomic groups would be valuable.

Exploring EQ-5D-Y-3L Experience-Based VAS Values Derived Among Adolescents

OBJECTIVES

The EQ-5D-Y-3L is a generic health-related quality of life (HRQoL) instrument, developed from the adult version to be suitable for children and adolescents aged 8-15 years. To derive values for the EQ-5D-Y-3L different valuation methods and perspectives have been applied. The aim of this study was to explore EQ-5D-Y-3L experience-based visual analogue scale (VAS) values derived among adolescents.

METHODS

Data were derived from a cross-sectional population survey administered via schools in 2014 to adolescents aged 13-18 years, in Sweden. Regression analyses were performed on individual data with the VAS value as dependent variable. Ordinary least-squares (OLS) and generalised linear models (GLM) were estimated with two dummy variables for each of the EQ-5D-Y-3L dimensions. Interaction variables were tested. One way of anchoring VAS at dead and full health by using the predicted values for worst and best health states defined by the EQ-5D-Y-3L descriptive system was explored.

RESULTS

Of the 243 possible health states in EQ-5D-Y-3L, 92 were reported by the 6,468 respondents. The largest decrements in VAS values were observed for the dimension 'feeling worried, sad or unhappy' followed by 'doing usual activities'. All models performed similarly in terms of monotonicity and goodness of fit but in terms of simplicity and understandability, the OLS main effect model was superior.

CONCLUSIONS

We have explored experience-based VAS values for the EQ-5D-Y-3L derived among adolescents. The findings suggest that it is possible for adolescents to value their own health state using the VAS, which makes it possible to capture aspects that are important for young people.

EQ-5D-3L Health Status Among Homeless People in Stockholm, Sweden, 2006 and 2018

Background: Homeless people are a socially excluded group whose health reflects exposures to intersecting social determinants of health. The aim of this study was to describe and compare the demographic composition, certain social determinants of health, and self-reported health among homeless people in Stockholm, Sweden, in 2006 and 2018. Methods: Analysis of data from face-to-face interviews with homeless people in Stockholm 2006 (n = 155) and 2018 (n = 148), based on a public health survey questionnaire adapted to the group, including the EQ-5D-3L instrument. The chi-squared test was employed to test for statistical significance between groups and the independent t-test for comparison of mean scores and values. Ordinary Least Squares (OLS) regression, with Robust Standard Errors (RSE) was performed on merged 2006 and 2018 data with mean observed EQ VAS score as outcome variable. Results: In 2018 more homeless people originated from countries outside Europe, had temporary social assistance than long-term social insurance, compared to in 2006. In 2018 more respondents reported lack of social support, exposure to violence, and refrained from seeking health care because of economic reasons. Daily smoking, binge drinking, and use of narcotic drugs was lower 2018 than 2006. In 2018 a higher proportion reported problems in the EQ-5D-3L dimensions, the mean TTO index value and the VAS index value was significantly lower than in 2006. In the regression analysis of merged data there was no significant difference between the years. Conclusions: Homeless people are an extremely disadvantaged group, have high rates of illness and disease and report poor health in all EQ-5D-3L dimensions. The EQ VAS score among the homeless people in 2018 is comparable to the score among persons aged 95-104 years in the general Swedish population 2017. The EQ-5D-3L instrument was easily administered to this group, its use allows comparison with larger population groups. Efforts are needed regarding housing, but also intensified collaboration by public authorities with responsibilities for homeless people's health and social welfare. Further studies should evaluate the impact of such efforts by health and social care services on the health and well-being of homeless people.

'Like holding the axe on who should live or not': adolescents' and adults' perceptions of valuing children's health states using a standardised valuation protocol for the EQ-5D-Y-3L

Purpose

There is an increasing interest for using qualitative methods to investigate peoples’ cognitive process when asked to value health states. A standardised valuation protocol for the EQ-5D-Y-3L instrument was recently developed. Little is known regarding how people think, reason, and feel when asked to value health states for children. The aim was to explore how adolescents and adults perceive the task of valuing children’s health states using the standardised valuation protocol.

Methods

This was a qualitative study where adults (n = 10) and adolescents (n = 10) from the general population participated in individual video-interviews. Initially, participants reported their own health with the EQ-5D-3L instrument. Then they were asked to complete several valuations tasks for a 10-year-old child according to the standardised valuation protocol, followed by a semi-structured interview with open-ended questions to further explore participants’ perceptions. A qualitative content analysis was performed.

Results

The two main categories that emerged from the data were ‘Thoughts and feelings when valuing children’s health states’ and ‘Strategies when valuing children’s health states’. Participants expressed feeling doubt, awfulness and being reluctant to trade-off life years, and questioned who has the right to value health states for children. Experience and point of view were strategies participants used to complete the valuation tasks.

Conclusion

The findings from the present study can contribute to the understanding and interpretation of quantitative results where the standardised valuation protocol has been used to derive values for the EQ-5D-Y-3L. Furthermore, results of the study support the feasibility of including adolescents in valuation studies.

Supplementary Information

The online version contains supplementary material available at 10.1007/s11136-022-03107-0.

Longitudinal study of patients' health-related quality of life using EQ-5D-3L in 11 Swedish National Quality Registers

OBJECTIVE

To compare problems reported in the five EQ-5D-3L dimensions and EQ VAS scores at baseline and at 1-year follow-up among different patient groups and specific diagnoses in 11 National Quality Registers (NQRs) and to compare these with the general population.

DESIGN

Longitudinal, descriptive study.

PARTICIPANTS

2 66 241 patients from 11 NQRs and 49 169 participants from the general population were included in the study.

PRIMARY AND SECONDARY OUTCOME MEASURES

Proportions of problems reported in the five EQ-5D-3L dimensions, EQ VAS scores of participants' own health and proportions of participants and mean/median EQ VAS score in the Paretian Classification of Health Change (PCHC) categories.

RESULTS

In most of the included registers, and the general population, problems with pain/discomfort were the most frequently reported at baseline and at 1-year follow-up. Mean EQ VAS score (SD) ranged from 45.2 (22.4) among disc hernia patients to 88.1 (15.3) in wrist and hand fracture patients at baseline. They ranged from 48.9 (20.9) in pulmonary fibrosis patients to 83.3 (17.4) in wrist and hand fracture patients at follow-up. The improved category of PCHC, improvement in at least one dimension without deterioration in any other, accounted for the highest proportion in several diagnoses, corresponding with highest improvement in mean EQ VAS score.

CONCLUSIONS

The study documented self-reported health of several different patient groups using the EQ-5D-3L in comparing with the general population. This demonstrated the important role of patient-reported outcomes in routine clinical care, to assess and follow-up health status and progress within different groups of patients. The EQ-5D-3L descriptive system and EQ VAS have an important role in providing a 'common denominator', allowing comparisons across NQRs and specific diagnoses.

TRIAL REGISTRATION NUMBER

ClinicalTrials.gov (NCT04359628).

Inequality and heterogeneity in health-related quality of life: findings based on a large sample of cross-sectional EQ-5D-5L data from the Swedish general population

Purpose

This study aimed to investigate inequality and heterogeneity in health-related quality of life (HRQoL) and to provide EQ-5D-5L population reference data for Sweden.

Methods

Based on a large Swedish population-based survey, 25,867 respondents aged 30‒104 years, HRQoL is described by sex, age, education, income, economic activity, health-related behaviours, self-reported diseases and conditions. Results are presented by EQ-5D-5L dimensions, respondents rating of their overall health on the EQ visual analogue scale (EQ VAS), VAS index value and TTO (time trade-off) index value allowing for calculation of quality-adjusted life years (QALYs). Ordinary Least Squares and multivariable logistic regression analyses were used to study inequalities in observed EQ VAS score between socioeconomic groups and the likelihood to report problems on the dimensions, respectively, adjusted for confounders.

Results

In total, 896 different health states were reported; 24.1% did not report any problems. Most problems were reported with pain/discomfort. Women reported worse HRQoL than men, and health deteriorated with age. The strongest association between diseases and conditions and EQ VAS score was seen for depression and mental health problems. There was a socioeconomic gradient in HRQoL; adjusting for health-related behaviours, diseases and conditions slightly reduced the differences between educational groups and income groups, but socioeconomic inequalities largely remained.

Conclusion

EQ-5D-5L population reference (norms) data are now available for Sweden, including socioeconomic differentials. Results may be used for comparisons with disease-specific populations and in health economic evaluations. The observed socioeconomic inequality in HRQoL should be of great importance for policy makers concerned with equity aspects.

Supplementary Information

The online version contains supplementary material available at 10.1007/s11136-021-02982-3.

Variations in Patients' Overall Assessment of Their Health Across and Within Disease Groups Using the EQ-5D Questionnaire: Protocol for a Longitudinal Study in the Swedish National Quality Registers

BACKGROUND

EQ-5D is one of the most commonly used questionnaires to measure health-related quality of life. It is included in many of the Swedish National Quality Registers (NQRs). EQ-5D health states are usually summarized using "values" obtained from members of the general public, a majority of whom are healthy. However, an alternative, which remains to be studied in detail, is the potential to use patients' self-reported overall health on the visual analog scale (VAS) as a means of capturing experience-based perspective.

OBJECTIVE

The aim of this study is to assess EQ VAS as a valuation method with an experience-based perspective through comparison of its performance across and within patient groups, and with that of the general population in Sweden.

METHODS

Data on nearly 700,000 patients from 12 NQRs covering a variety of diseases/conditions and nearly 50,000 individuals from the general population will be analyzed. The EQ-5D-3L data from the 12 registers and EQ-5D-5L data from 2 registers will be used in the analyses. Longitudinal studies of patient-reported outcomes among different patient groups will be conducted in the period from baseline to 1-year follow-up. Descriptive statistics and analyses comparing EQ-5D dimensions and observed self-assessed EQ VAS values across and within patient groups will be performed. Comparisons of the change in health state and observed EQ VAS values at 1-year follow-up will also be undertaken. Regression models will be used to assess whether EQ-5D dimensions predict observed EQ VAS values to investigate patient value sets in each patient group. These will be compared across the patient groups and with the existing Swedish experience-based VAS and time trade-off value sets obtained from the general population.

RESULTS

Data retrieval started in May 2019 and data of patients in the 12 NQRs and from the survey conducted among the general population have been retrieved. Data analysis is ongoing on the retrieved data.

CONCLUSIONS

This research project will provide information on the differences across and within patient groups in terms of self-reported health status through EQ VAS and comparison with the general population. The findings of the study will contribute to the literature by exploring the potential of self-assessed EQ VAS values to develop value sets using an experience-based perspective.

TRIAL REGISTRATION

ClinicalTrials.gov NCT04359628; https://clinicaltrials.gov/ct2/show/NCT04359628.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

DERR1-10.2196/27669.

Acceptability of the health-related quality of life instrument EQ-5D-Y-5L among patients in child and adolescent psychiatric inpatient care

Aim

The generic EuroQol 5 Dimensions Youth 5 Level (EQ‐5D‐Y‐5L) measures health‐related quality of life among children from 8 years. Respondents report their health on five dimensions with five severity levels and rate their overall health on a visual analogue scale (EQ VAS). The aim of the study was to explore acceptability of the EQ‐5D‐Y‐5L instrument among patients in child and adolescent psychiatric inpatient care.

Methods

A convenience sample of patients within a psychiatric inpatient care clinic in Region Stockholm, Sweden, was used. Follow‐up questions were answered directly after filling in the EQ‐5D‐Y‐5L. Conventional qualitative content analysis was chosen to analyse the open‐ended questions on how they perceived answering the instrument.

Results

In total, 52 patients (83% girls), mean age 15.4 years (range 13‐17), were included. Three themes emerged: generic content of the EQ‐5D‐Y‐5L descriptive system; design and wording of the EQ‐5D‐Y‐5L descriptive system and the EQ VAS; self‐reporting health with the EQ‐5D‐Y‐5L descriptive system and the EQ VAS.

Conclusion

The inclusion of physical health dimensions was perceived as positive, but some patients considered the descriptive system too generic. The results indicate that these patients in general could self‐report their health in a meaningful way with the EQ‐5D‐Y‐5L instrument.

Money matters - primary care providers' perceptions of payment incentives

PURPOSE

Payments to healthcare providers create incentives that can influence provider behaviour. Research on unit-level incentives in primary care is, however, scarce. This paper examines how managers and salaried physicians at Swedish primary healthcare centres perceive that payment incentives directed towards the healthcare centre affect their work.

DESIGN/METHODOLOGY/APPROACH

An interview study was conducted with 24 respondents at 13 primary healthcare centres in two cities, located in regions with different payment systems. One had a mixed system comprised of fee-for-service and risk-adjusted capitation payments, and the other a mainly risk-adjusted capitation system.

FINDINGS

Findings suggested that both managers and salaried physicians were aware of and adapted to unit-level payment incentives, albeit the latter sometimes to a lesser extent. Respondents perceived fee-for-service payments to stimulate production of shorter visits, up-coding of visits and skimming of healthier patients. Results also suggested that differentiated rates for patient visits affected horizontal prioritisations between physician and nurse visits. Respondents perceived that risk-adjustments for diagnoses led to a focus on registering diagnosis codes, and to some extent, also up-coding of secondary diagnoses.

PRACTICAL IMPLICATIONS

Policymakers and responsible authorities need to design payment systems carefully, balancing different incentives and considering how and from where data used to calculate payments are retrieved, not relying too heavily on data supplied by providers.

ORIGINALITY/VALUE

This study contributes evidence on unit-level payment incentives in primary care, a scarcely researched topic, especially using qualitative methods.

Validation of the patient-reported experience measure for care in Chinese hospitals (PREM-CCH)

BACKGROUND

A psychometrically validated instrument to measure patient experience in Chinese public hospitals would be useful and is currently lacking. Our research team developed the Patient-Reported Experience Measure for Care in Chinese Hospitals (PREM-CCH). We aimed to validate this PREM-CCH in the present study.

METHODS

Data were drawn from a cross-sectional patient survey in 2016. Complete responses from 2293 outpatients and 1510 inpatients were included. Separate psychometric evaluation was carried out on outpatient and inpatient PREM-CCHs in terms of exploratory factor analysis, internal consistency, construct validity and criterion validity.

RESULTS

The validated outpatient PREM-CCH contained 22 items and five Factors, i.e. Communication and information, Professional competence, Medical costs, Efficiency, and Hospital recommendation. The validated inpatient PREM-CCH contained 19 items and six Factors, i.e. Communication and information, Professional competence, Medical costs, Efficiency, Health outcomes, and Hospital recommendation. The PREM-CCH showed satisfactory internal consistency, construct validity and criterion validity.

CONCLUSIONS

The PREM-CCH is one of the first validated instruments capturing patient experience of care in the context of Chinese public hospitals. It performed well in the psychometric evaluation. It consists of a basic set of items important to patients that could be applicable to public hospitals in China and actionable to inform quality improvement initiatives.

Reporting and valuing one's own health: a think aloud study using EQ-5D-5L, EQ VAS and a time trade-off question among patients with a chronic condition

Background

The EQ-5D-5L, the EQ VAS, and the time trade-off (TTO) are commonly used to report and value health. Still, there is a need to better understand how these questionnaires and methods are perceived by the respondents, as well as the thoughts and motives behind their responses. The aim of this study was to increase knowledge of how individuals think and reason when reporting and valuing their own current health, using EQ-5D-5L, EQ VAS, and an open-ended TTO question.

Methods

Twenty patients with type 1 diabetes participated in qualitative individual think aloud interviews in Stockholm, Sweden. Participants were asked to describe their thoughts when responding to three assessments. The interviews were transcribed verbatim and analyzed using thematic analysis.

Results

The analysis showed that participants conducted the assessments by contextualizing and interpreting instructions, relating the questions to their own health, using different recall periods and time perspectives, and using personal, interpersonal, or normative comparators. It was challenging to reduce the experience of everyday life into a response option, and the thoughts behind the responses differed between the assessments. Before deciding on what to include, participants thought of the purpose and context of the assessments. Current health or past experiences of health were applied in the EQ-5D descriptive system and in EQ VAS, while participants focused on the future in the TTO. Thoughts about the impact on others, personal goals, and expectations on future health were more clearly integrated in the TTO assessment. All participants considered the trade-off between life years and health. However, despite the use of different comparators, the concept of ‘full health’ was found difficult to imagine or relate to.

Conclusions

This study provides insights as to how responses to the EQ-5D-5L, EQ VAS, and TTO assessments are complementary and where these assessments differ in adults with a chronic condition. The findings may contribute to a better understanding when interpreting the quantitative results and contribute to the literature pertaining to possible explanations for differences in health state values depending on the valuation method.

Impact of an educational intervention in primary care on fasting blood glucose levels and diabetes knowledge among patients with type 2 diabetes mellitus in rural China

OBJECTIVE

To assess the impact of an educational intervention for type 2 diabetes mellitus (T2DM) in primary care in rural China, on fasting blood glucose (FBG) level and diabetes knowledge.

METHODS

Patients with T2DM (n = 1,589) in 18 township health centres in three counties in Jiangsu Province were randomly divided into an intervention group receiving educational intervention and follow-up visits, and a control group with standard care. Questionnaires and medical records, including FBG level and diabetes knowledge score, were compared, at baseline and follow-up. Propensity score matching and Difference-in-Difference analysis were used.

RESULTS

The FBG level decreased significantly in the intervention group compared to the control group, DID=-0.53 mmol/l, (CI95 % -0.90 to -0.16). The diabetes knowledge score increased significantly in the intervention group compared to the control group, DID = 0.91, (CI95 % 0.64-1.18). The FBG level and diabetes knowledge score improved significantly in the intervention group in all counties.

CONCLUSIONS

The educational intervention and increased collaboration between hospitals and primary care improved the FBG level and diabetes knowledge score in the intervention group compared to the control group after one year.

PRACTICE IMPLICATIONS

Educational intervention and increased collaboration between hospitals and primary care may improve diabetes care in rural China.

Healthcare utilisation and measles, mumps and rubella vaccination rates among children with an extended postnatal home visiting programme in a disadvantaged area in Stockholm, Sweden-A 3-year follow-up

AIM

To follow up healthcare utilisation and measles, mumps and rubella (MMR) vaccination rates among children 0-36 months, receiving an extended postnatal home visiting programme in a disadvantaged area with poorer child health, and in control groups, in Stockholm, Sweden.

METHODS

We analysed electronic child health records regarding outpatient visits, inpatient episodes and MMR vaccination for children 0-36 months receiving the home visiting programme (Intervention Group) and in control groups (Control Group and Rinkeby Comparison Group).

RESULTS

Children in the Intervention Group had significantly higher MMR vaccination rate than children in the Rinkeby Comparison Group. Healthcare utilisation was similar in the Intervention Group and the control groups. In stratified analyses by number of home visits received, children receiving the recommended six home visits had significantly fewer inpatient episodes and somewhat fewer emergency visits than those receiving fewer home visits.

CONCLUSION

The extended home visiting programme had a positive impact on the MMR vaccination rate. Children receiving the recommended six home visits had lower use of inpatient care. In addition to being positively perceived by parents in an area with greater healthcare needs, the programme may have a positive impact on their children's healthcare utilisation.

Experience-Based Swedish TTO and VAS Value Sets for EQ-5D-5L Health States

BACKGROUND AND OBJECTIVE

Although value sets for the five-level version of the generic health-related quality-of-life instrument EQ-5D are emerging, there is still no value set available in the literature based on time trade-off valuations made by individuals experiencing the valued health states. The aim of this study was to estimate experience-based value sets for the EQ-5D-5L for Sweden using time trade-off and visual analogue scale valuation methods.

METHODS

In a large, cross-sectional, population-based, self-administered postal health survey, the EQ-5D-5L descriptive system, EQ visual analogue scale and a time trade-off question were included. Time trade-off and visual analogue scale valuations of the respondent's current health status were used in statistical modelling to estimate a single-index value of health for each of the 3125 health states. Ordinary least-squares and generalised linear models were estimated with the main effect within each of the five dimensions represented by 20 dummy variables reflecting the additional decrement in value for levels 2-5 when the severity increases by one level sequentially beginning from having no problem. Interaction variables representing the occurrence of severity levels in at least one of the dimensions were tested: severity level 2 or worse (N2); severity level 3 or worse (N3); severity level 4 or worse (N4); severity level 5 (N5).

RESULTS

A total of 896 health states (28.7% of the 3125 possible EQ-5D-5L health states) were reported by the 25,867 respondents. Visual analogue scale (n = 23,899) and time trade-off (n = 13,381) responders reported valuations of their currently experienced health state. The preferred regression models used ordinary least-squares estimation for both time trade-off and visual analogue scale values and showed consistency in all coefficients after combining certain levels. Levels 4 and 5 for the dimensions of mobility, self-care and usual activities were combined in the time trade-off model. Including the interaction variable N5, indicating severity level 5 in at least one of the five dimensions, made it possible to distinguish between the two worst severity levels where no other dimension is at level 5 as this coefficient is applied only once. In the visual analogue scale regression model, levels 4 and 5 of the mobility dimension were combined. The interaction variables N2-N4 were included, indicating that each of these terms reflect a statistically significant decrement in visual analogue scale value if any of the dimensions is at severity level 2, 3 or 4, respectively.

CONCLUSIONS

Time trade-off and visual analogue scale value sets for the EQ-5D-5L are now available for Sweden. The time trade-off value set is the first such value set based on experience-based time trade-off valuation. For decision makers with a preference for experience-based valuations of health states from a representative population-based sample, the reported value sets may be considered fit for purpose to support resource allocation decision as well as evaluating population health and healthcare performance.

Predictive ability of the American Society of Anaesthesiologists physical status classification system on health-related quality of life of patients after total hip replacement: comparisons across eight EQ-5D-3L value sets

Background

American Society of Anaesthesiologists (ASA) physical status classification system and its association with postoperative outcomes has been studied in different diseases. However, there is a paucity of studies on the relationship between ASA class and postoperative health-related quality of life (HRQoL) outcomes following total hip replacement (THR).

The aim of this study was to assess the discriminative abilities of EQ-5D-3L value sets from Sweden, Germany, Denmark and the United Kingdom in relation to ASA classes and these value sets’ abilities to show the predictive performance of ASA classes on HRQoL among THR patients in Sweden.

Methods

A longitudinal study was conducted using data of patients in the Swedish Hip Arthroplasty Register who underwent THR between 2008 and 2016. We included 69,290 pre- and 1-year postoperative records and 21,305 6-year postoperative records. The study examined three experience-based EQ-5D-3L value sets (the Swedish VAS and TTO and the German VAS) and five hypothetical value sets (TTO from Germany and VAS and TTO value sets from Denmark and the UK each). Using linear models, the abilities of the value sets to discriminate among ASA classes and to show the predictive performance of ASA classes on HRQoL score were assessed.

Results

All value sets differentiated among ASA classes and showed the predictive effect of ASA classes on HRQoL. ASA classes were found to predict HRQoL consistently for all value sets investigated, with small variations in prediction error among the models.

Conclusion

ASA classes of patients undergoing THR predicted HRQoL scores significantly and consistently, indicating their importance in tailoring care for patients.

EQ-5D-Y-5L as a patient-reported outcome measure in psychiatric inpatient care for children and adolescents - a cross-sectional study

Background

Psychiatric disorders have a major individual and societal impact. Until now, the association between health-related quality of life and physical disorders has been far more investigated than the association with psychiatric disorders. Patient-reported outcome measures makes it possible to capture the patient perspective to improve treatments and evaluate treatment outcomes. The aim of this study is to measure health-related quality of life with the EQ-5D-Y-5L among patients in child and adolescent psychiatric inpatient care and to test the instrument’s psychometric properties in terms of feasibility and construct validity.

Methods

Data were collected at the child and adolescent psychiatric inpatient facility in Region Stockholm. A questionnaire including the EQ-5D-Y-5L instrument, the Strengths and Difficulties Questionnaire with an impact supplement and a self-rated health question, was administered for self-completion using paper and pencil, with an interviewer present. The Chi-square test was used to investigate differences in proportion of reported problems in the EQ-5D-Y-5L dimensions and the Mann-Whitney U test was used for differences in mean EQ VAS scores. Feasibility was assessed by investigating proportion of missing and ambiguous answers and Spearman’s and Pearson’s correlation were used to examine construct validity.

Results

In total 52 adolescents participated in the study and the majority were girls. The most common diagnosis at admission was depressive episode/recurrent depressive disorder. All participants reported problems on at least one dimension. Most problems were reported in the dimension ‘feeling worried, sad or unhappy’, where 64% reported severe or extreme problems. Mean EQ VAS score was 29.2. Feasibility was supported and construct validity indicated as some of the hypothesised correlations between the EQ-5D-Y-5 L and the Strengths and Difficulties Questionnaire were found, however, for ‘doing usual activities’ and ‘having pain or discomfort’ the correlations were weaker than hypothesised.

Conclusions

This is the first study where the newly developed EQ-5D-Y-5L instrument has been used in psychiatric inpatient care for youth. Participants reported problems in all severity levels in most of the EQ-5D-Y-5L dimensions; mean EQ VAS score was considerably low. Feasibility of the EQ-5D-Y-5L was supported, however other psychometric properties need to be further tested in a larger sample.

How do EQ-5D-3L and EQ-5D-5L compare in a Swedish total hip replacement population?

Background and purpose - To better detect small changes in postoperative outcome following total hip replacement (THR), the Swedish Hip Arthroplasty Register (SHAR) has decided to change from the EQ-5D-3L (3L) to the EQ-5D-5L (5L). To enable comparison of results obtained with use of the 2 versions of EQ-5D, transferal of results between the questionnaires used is necessary. We assessed the measurement properties of the EQ-5D-5L compared with the EQ-5D-3L, preoperatively and 1-year postoperatively in a Swedish THR population.Patients and methods - Patients eligible for elective THR during 2015 in Western Sweden were invited to the study. With a 2-week separation, the 3L and 5L questionnaires were administered to patients before and 1 year after surgery. Comparing the 2 versions of the EQ-5D, we investigated redistribution of responses, ceiling and floor effects, EQ VAS correlations (Spearman's rank correlation coefficient, r_s), and EQ VAS scores for different severity levels by dimension (univariable ordinary least square regression).Results - The additional severity levels of the 5L version were frequently used on both measurement occasions (preoperative mobility 5%, self-care 17%, usual activities 20%, pain 5% and anxiety 3%, postoperative mobility 6%, self-care 5%, usual activities 8%, pain 9%, and anxiety 5%). Ceiling effects of the 3L version diminished overall by 7% using the 5L version. The correlations between the 2 EQ VAS scores obtained with the 3L and 5L instruments were strong both pre- (r_s = 0.71) and postoperatively (r_s = 0.87). Estimated EQ VAS scores for different levels of severity were consistent for all dimensions except for the mobility dimension of the preoperative 5L version and the anxiety dimension in the postoperative 5L version.Interpretation - Our findings support that the 5L has a higher resolution than the 3L version regarding description of health-related quality of life in patients undergoing THR in Sweden. The EQ VAS scores for different levels of severity agree well between the EQ-5D versions. This could potentially be used to develop a crosswalk value set for transforming 3L to 5L responses in this patient group.

EQ-5D-Y-5L: developing a revised EQ-5D-Y with increased response categories

Purpose

EQ-5D-Y is a generic measure of health status for children and adolescents aged 8–15 years. Originally, it has three levels of severity in each dimension (3L). This study aimed to develop a descriptive system of EQ-5D-Y with an increased number of severity levels and to test comprehensibility and feasibility.

Methods

The study was conducted in Germany, Spain, Sweden and the UK. In Phase 1, a review of existing instruments and focus group interviews were carried out to create a pool of possible labels for a modified severity classification. Participants aged 8–15 rated the severity of the identified labels in individual sorting and response scaling interviews. In Phase 2, preliminary 4L and 5L versions were constructed for further testing in cognitive interviews with healthy participants aged 8–15 years and children receiving treatment for a health condition.

Results

In Phase 1, a total of 233 labels was generated, ranging from 37 (UK) to 79 labels (Germany). Out of these, 7 to 16 possible labels for each dimension in the different languages were rated in 255 sorting and response scaling interviews. Labels covered an appropriate range of severity on the health continuum in all countries. In Phase 2, the 5L version was generally preferred (by 68–88% of the participants per country) over the 4L version.

Conclusions

This multinational study has provided a version of the EQ-5D-Y with 5 severity levels in each dimension. This extended version (EQ-5D-Y-5L) requires testing its psychometric properties and its performance compared to that of the original EQ-5D-Y-3L.

Electronic supplementary material

The online version of this article (10.1007/s11136-019-02115-x) contains supplementary material, which is available to authorized users.

Exploring pathways to outpatients' satisfaction with health care in Chinese public hospitals in urban and rural areas using patient-reported experiences

Background

This study aimed to measure outpatients’ general satisfaction with and experiences of different aspects of health care in Chinese public hospitals and to investigate to what extent general satisfaction could be explained by patients’ experiences in public hospitals located at urban and rural areas.

Methods

Data on 4782 outpatients were derived from a patient survey in 9 city-level (urban) and 16 county-level (rural) public hospitals across China in 2016. According to Donabedian’s model, questions on patients’ experiences were categorized into six aspects under “structure” and “process”, with general satisfaction representing “outcome”. The Chi-square tests were used to test the differences in patients’ experiences and general satisfaction between urban and rural areas. The Partial Least Squares Structural Equation Modeling (PLS-SEM) was used to estimate effects of patients’ experiences on general satisfaction.

Results

Compared with respondents in rural areas, there were significantly higher percentages of respondents in urban areas reporting satisfaction and positive experiences in most aspects. As manifested by the path coefficients in PLS models, the positive effect of professional competence (0.197) on general satisfaction was the most significant in respondents at urban areas, followed by communication and information (0.183), and caring attitudes and emotional support (0.174). Among respondents at rural areas, the positive effect of environment facilities (0.199) was the most significant, followed by caring attitudes and emotional support (0.188), and professional competence (0.179). The PLS models explained 44.9 and 46.0% of variations in patient satisfaction at urban and rural areas, respectively.

Conclusions

Levels of patient satisfaction and experiences at Chinese public hospitals were higher in urban than in rural areas. Outpatients’ experiences of professional competence, caring attitudes and emotional support were strongly related to their satisfaction in both settings. However, among respondents in urban areas, experiences of communication and information were more strongly related to satisfaction, whereas among respondents in rural areas, experiences of environment and facilities were more strongly related to satisfaction.

Electronic supplementary material

The online version of this article (10.1186/s12939-019-0932-3) contains supplementary material, which is available to authorized users.

Experience-Based Values: A Framework for Classifying Different Types of Experience in Health Valuation Research

Whether health values should be elicited from the perspective of patients or the general public is still an open debate. The overall aim of this paper is to increase knowledge on the role of experience in health preference-based valuation research. The objectives of this paper are threefold. First, we elaborate the idea of experience-based (EB) values under the informed value or knowledge viewpoint. We think the whole scope of knowledge about the health states involved in valuation exercises is not fully integrated in the previous literature. For instance, personal knowledge based on past experiences, contemplating the health state as a likely future condition, knowing someone who is currently experiencing the state, or just receiving detailed information about the health states; all these situations capture different nuances of health-related experience which are not explicitly referred to in valuation tasks. Second, we propose a framework where the extended factor of experience is detached from other factors interwoven into the valuation exercise. Third, we examine how experience is tackled in different value sets (EB or non-EB) identified via a literature review. We identified the following elements (and items) in a value set: health state (without description, described using a multi-attribute instrument, described using other method), reference person (the respondent; other person, similar/known/hypothetical), time frame (past, present, future), raters (public, representative/convenience; vested interest, patients/other) and experience (personal experience, past/present/future; vicarious experience, affective/non-affective; no experience). Forty-nine valuation exercises were extracted from 22 reviewed papers and classified following our suggested set of elements and items. The results show that the role of experience reported in health valuation-related papers is frequently disregarded or, at most, minimised to the item of personal experience (present)-linked to self-reported health.

Population health status based on the EQ-5D-Y-3L among adolescents in Sweden: Results by sociodemographic factors and self-reported comorbidity

Purpose

The EQ-5D-Y-3L is a generic health-related quality of life (HRQoL) measure developed for youth from 8 years old. The aim of this study is to present population health status, based on the EQ-5D-Y-3L, among adolescents in Sweden, by sex, age, self-reported comorbidity and parents’ occupational status.

Methods

Data were obtained from a cross-sectional total survey among students, aged 13–18 years, in a Swedish County year 2014. The survey included EQ-5D-Y-3L, questions regarding self-reported health, disease, functional impairment and mental distress. Parents’ occupational status was used as a proxy for socio-economic status.

Results

A total of 6574 participants answered all the EQ-5D-Y-3L dimensions (mean age was 15.9 years, same proportion of boys and girls). Girls reported more problems than boys in the dimensions ‘doing usual activities’, ‘having pain or discomfort’ and ‘feeling worried, sad or unhappy’, and lower mean VAS score. Respondents with one or both parents unemployed reported more problems with usual activities, pain/discomfort and in the mood dimension than those with both parents employed. Those with comorbidity had in general more problems in all dimensions and lower mean VAS score. The highest impact on VAS score was found for adolescents who reported that they always felt depressed.

Conclusions

Sex, age, self-reported comorbidity and parents’ occupational status were associated with HRQoL determined by the EQ-5D-Y-3L in the general population of adolescents. The ability of EQ-5D-Y-3L to distinguish adolescents’ health status based on these factors confirms the instrument’s usefulness in assessment of HRQoL and as guidance for prioritization.

Electronic supplementary material

The online version of this article (10.1007/s11136-018-1985-2) contains supplementary material, which is available to authorized users.

What do patients care most about in China's public hospitals? Interviews with patients in Jiangsu Province

BACKGROUND

Evaluations on different aspects of the performance of public hospitals in China have been conducted, usually based on indicators developed by literature review and expert suggestions. The patient perspective was not always considered. This study aims to identify what patients care most about in China's public hospitals exclusively from a patient perspective.

METHODS

A mix of stratified sampling and typical sampling was used to select 15 public hospitals in Jiangsu Province of China. In each sampled hospital, a convenient sample of six outpatients and six inpatients was selected to conduct face-to-face individual interviews. An interview guide consisting of six open-ended questions was designed. Donabedian's quality of care framework was applied to categorize themes and subthemes, which were generated from patients' interviews by using the conventional content analysis approach. Frequencies of themes and subthemes were counted.

RESULTS

Nine key themes were identified regarding patients' concerns about hospital care, which were environment and facilities, professional competence, hospital reputation, and morals of medical staff in the "structure" category of Donabedian's framework, caring attitudes and emotional support, medical costs, communication and information, and efficiency and coordination of care in the "process" category, and health outcomes in the "outcome" category.

CONCLUSIONS

This study has identified and prioritized the aspects that patients care most about in China's public hospitals in Jiangsu Province exclusively from a patient perspective. A measurement tool of patient-reported experiences in public hospitals could be built based on this study. Efforts should be made to represent the patient perspective to further improve the reform of public hospitals in China.

Effectiveness, costs and cost-effectiveness of chiropractic care and physiotherapy compared with information and advice in the treatment of non-specific chronic low back pain: study protocol for a randomised controlled trial

Background

Low back pain is a global public health problem and a leading cause of disability all over the world. The lifetime prevalence of low back pain is 70–80% and a significant proportion of people affected develop chronic low back pain (CLBP). Besides a severe negative impact on people’s health and health-related quality of life, CLBP is associated with substantial costs for society. Medical costs for the management of CLBP and costs for production losses due to absenteeism from work are sizeable. Pharmaceuticals, physical activity, manipulation, and multidisciplinary rehabilitation interventions are examples of widely used treatments for CLBP. However, the scientific basis to recommend the use of one treatment over another is limited and more research is needed to study the effects, costs and cost-effectiveness of treatments for CLBP in clinical practice.

The aim of the study is to evaluate the effectiveness (back pain-related functional limitation, back pain intensity, general health, health-related quality of life, and working status), costs (medical costs and costs for production losses) and cost-effectiveness of chiropractic care and physiotherapy when added to information and advice in the treatment of patients with non-specific CLBP in Sweden.

Methods/design

This is a pragmatic randomised controlled trial, where participants are recruited through six primary care rehabilitation units (PCRUs) in Stockholm County Council, Sweden. Individuals with non-specific CLBP are individually randomised to one of four treatment groups: ‘information and advice’; ‘physiotherapy, and information and advice’; ‘chiropractic care, and information and advice’; or ‘chiropractic care, physiotherapy, and information and advice’. A sample size of 600 participants will be recruited during a period of 33 months. A computer-based questionnaire is used to collect data on back pain-related functional limitation (Oswestry Disability Index), pain intensity (Numeric Rating Scale), general health (self-rated health), health-related quality of life (EQ-5D-3L), and working status (measured as percentage of full-time work). Data will be collected at baseline, and at 3, 6, and 12 months after baseline.

Discussion

The results from our study should be considered when producing evidence-based guidelines and recommendations on which treatment strategies to use for CLBP.

Trial registration

ISRCTN registry, ID: ISRCTN15830360. Registered prospectively on 2 February 2017.

Electronic supplementary material

The online version of this article (doi:10.1186/s13063-017-2351-3) contains supplementary material, which is available to authorized users.

Association between social capital and health-related quality of life among left behind and not left behind older people in rural China

BACKGROUND

The association between social capital and health-related quality of life (HRQoL) has not been thoroughly studied among older persons in rural China, especially among those who were left behind or not. This study investigates the association between social capital and HRQoL and examines possible differences of this association between being left behind or not in rural China.

METHODS

A cross-sectional survey of 825 people aged 60 years and older, residing in three rural counties in Jiangsu Province in China, was conducted in 2013. Factor analysis was performed to measure social capital. EQ-5D was used to measure HRQoL. Tobit regression analysis with upper censoring was conducted to explore the association between social capital and EQ-5D index.

RESULTS

After controlling for individual characteristics, low social capital and being left behind were significantly associated with low HRQoL. Old people with low social capital had 0.055 lower EQ-5D index compared to those with high social capital. Old people being left behind had 0.040 lower EQ-5D index compared to those who were not left behind. For different dimensions of social capital, the main effects came from the domain of trust and reciprocity. There was a significant interaction between low social capital and being left behind on HRQoL, suggesting that low social capital was associated with low HRQoL among persons left behind.

CONCLUSIONS

Our findings indicate that the left behind old people with low social capital were a potentially vulnerable group in rural China. Formulating and implementing initiatives and strategies which increase social capital may foster better HRQoL, especially for old people who were left behind.

The External Validity of Mapping MSIS-29 on EQ-5D Among Individuals With Multiple Sclerosis in Sweden

Background: Mapping can be performed to predict utility values from condition-specific measures when preference-based measures are absent. A previously developed algorithm that predicts EQ-5D-3L index values from the Multiple Sclerosis Impact Scale (MSIS-29) has not yet been externally validated. Aim: To examine the external validity of a previously developed mapping algorithm by testing the accuracy of predicting EQ-5D-3L index values from MSIS-29 among multiple sclerosis (MS) patients in Sweden. Methods: Cross-sectional individual-level data were collected from population-based Swedish registers between 2011 and 2014. Health-related quality of life was assessed through MSIS-29 and EQ-5D-3L at one point in time among 767 individuals with known disability level of MS. A previously developed mapping algorithm was applied to predict EQ-5D index values from MSIS-29 items, and the predictive accuracy was assessed through mean absolute error and root mean square error. Results: When applying the algorithm, the predicted mean EQ-5D-3L index value was 0.77 compared to the observed mean index value of 0.75. Prediction error was higher for individuals reporting EQ-5D values <0.5 compared to individuals reporting EQ-5D values ≥0.5. Mean absolute error (0.12) and root mean square error (0.18) were smaller or equal to the prediction errors found in the original mapping study. Conclusion: The mapping algorithm had similar predictive accuracy in the two independent samples although results showed that the highest predictive performance was found in groups with better health. Varied predictive accuracy in subgroups is consistent with previous studies and strategies to deal with this are warranted.

Equity aspects of the Primary Health Care Choice Reform in Sweden - a scoping review

Background

Good health and equal health care are the cornerstones of the Swedish Health and Medical Service Act. Recent studies show that the average level of health, measured as longevity, improves in Sweden, however, social inequalities in health remain a major issue. An important issue is how health care services can contribute to reducing inequalities in health, and the impact of a recent Primary Health Care (PHC) Choice Reform in this respect. This paper presents the findings of a review of the existing evidence on impacts of these reforms.

Methods

We reviewed the published accounts (reports and scientific articles) which reported on the impact of the Swedish PHC Choice Reform of 2010 and changes in reimbursement systems, using Donabedian’s framework for assessing quality of care in terms of structure, process and outcomes.

Results

Since 2010, over 270 new private PHC practices operating for profit have been established throughout the country. One study found that the new establishments had primarily located in the largest cities and urban areas, in socioeconomically more advantaged populations. Another study, adjusting for socioeconomic composition found minor differences. The number of visits to PHC doctors has increased, more so among those with lesser needs of health care. The reform has had a negative impact on the provision of services for persons with complex needs. Opinions of doctors and staff in PHC are mixed, many state that persons with lesser needs are prioritized. Patient satisfaction is largely unchanged. The impact of PHC on population health may be reduced.

Conclusions

The PHC Choice Reform increased the average number of visits, but particularly among those in more affluent groups and with lower health care needs, and has made integrated care for those with complex needs more difficult. Resource allocation to PHC has become more dependent on provider location, patient choice and demand, and less on need of care. On the available evidence, the PHC Choice Reform may have damaged equity of primary health care provision, contrary to the tenets of the Swedish Health and Medical Service Act. This situation needs to be carefully monitored.

Practising proportionate universalism - a study protocol of an extended postnatal home visiting programme in a disadvantaged area in Stockholm, Sweden

BACKGROUND

In spite of a well-developed welfare system in Sweden, there are important health divides between residential areas in Stockholm county, with shorter life expectancy in disadvantaged areas. These socioeconomic and health divides also affect children. Extra efforts and organized collaboration by different authorities are required to meet the greater needs of children growing up in these areas.

METHODS/DESIGN

This article reports on the programme logic and evaluation design of an extended postnatal home visiting programme in collaboration between child health services and social services in the Rinkeby area, Stockholm, Sweden, where a large proportion are recent immigrants and more than 50% are at-risk of poverty. The intervention consists of five extra home visits when the child is aged between 2-15 months, jointly by a child health nurse and a social service parental advisor, offered to all parents of first-born children attending Rinkeby child health centre. Parents of first-born children attending child health centres in neighboring areas serve as controls. The evaluation will use a mixed methods approach, including participant observation, in-depth interviews, interviews using structured questionnaires, review and analysis of child health records and records of health care utilization.

DISCUSSION

The intervention has so far been very positively received by the parents (95% participation rate), who seem to perceive that they actually benefit from participating, and also from staff in child health services and social services who find this approach to be in line with their professional intentions. The staff members interviewed also appreciate the inter-professional collaboration. The intervention has sparked activities also in other sectors (the local library, the open child day care centre) of the local area. The timing of the intervention, at the start of the child's life, may be well suited to support parents in reorienting themselves and finding a positive parenting role, to the benefit of the development of the child. The intervention may be seen as a concrete example of "proportionate universalism", as a strategy to reduce inequalities in health - applying a universal intervention with increased intensity in groups that have a greater need for it.

TRIAL REGISTRATION

The study was retrospectively registered (11 August 2016) in the ISRCTN registry ( ISRCTN11832097 DOI: 10.1186/ISRCTN11832097 ).

Measuring health-related quality of life with the EQ-5D-Y instrument in children and adolescents with asthma

AIM

Asthma is one of the most common chronic paediatric diseases worldwide and affects different dimensions of health-related quality of life. This study tested the feasibility and convergent validity of using the EQ-5D-Y instrument on children and adolescents with asthma.

METHODS

A cross-sectional design was chosen, and children with asthma, aged from 8 to 16 years, were recruited from clinics in Stockholm, Sweden. To test convergent validity, the EQ-5D-Y instrument was combined with the Paediatric Quality of Life Questionnaire.

RESULTS

The EQ-5D-Y proved feasible as nearly 96% of the 94 respondents completed all items on the questionnaire. High and moderate correlations between the two instruments were found for the dimensions of 'doing usual activities' and 'activity limitations' and for 'having pain or discomfort' and 'symptoms'. The visual analogue scale of the ED-5D-Y correlated with the Paediatric Quality of Life Questionnaire total score and the self-rated health question. The dimensions on the EQ-5D-Y with most reported problems were 'usual activities', 'pain or discomfort' and 'worried, sad or unhappy'.

CONCLUSION

The EQ-5D-Y instrument seemed to provide feasibility and convergent validity for measuring health-related quality of life in children and adolescents with asthma.

Experience-based VAS values for EQ-5D-3L health states in a national general population health survey in China

Purpose

To investigate the feasibility of deriving experience-based visual analogue scale (VAS) values for EQ-5D-3L health states using national general population health survey data in China.

Methods

The EQ-5D-3L was included in the National Health Services Survey (n = 120,709, aged 15–103 years) to measure health-related quality of life. The respondents reported their current health status on a VAS and completed the EQ-5D-3L questionnaire, enabling modelling of the association between the experience-based VAS values and self-reported problems on EQ-5D dimensions and severity levels.

Results

VAS values were generally negatively associated with problems reported on the EQ-5D dimensions, and the anxiety/depression dimension had the greatest impact on VAS values. A previously obtained value for dead allowed the values for all 243 EQ-5D-3L health states to be transformed to the 0–1 scale (0 = dead, 1 = full health).

Conclusions

This study presents the feasibility of deriving an experience-based VAS values for EQ-5D-3L health states in China. The analysis of these VAS data raises more fundamental issues concerning the universal nature of the classification system and the extent to which Chinese respondents utilise the same concepts of health as defined by this classification system.

Electronic supplementary material

The online version of this article (doi:10.1007/s11136-014-0793-6) contains supplementary material, which is available to authorized users.

EQ-5D-Y as a health-related quality of life measure in children and adolescents with functional disability in Sweden: testing feasibility and validity

AIM

The EQ-5D-Y is a newly developed generic instrument measuring health-related quality of life in children and adolescents. The aim of the study was to test the feasibility and validity of the EQ-5D-Y in a Swedish patient sample of children and adolescents with functional motor, orthopaedic and medical disabilities and to compare the results with a general population sample.

METHODS

Two samples of children and adolescents answered the EQ-5D-Y and a core set of internationally standardised instruments, variables and socio-demographic questions. Patients with functional disability (n = 71, aged seven to 17 years) and individuals from the general population (n = 407, aged eight to 16 years) were included in this study.

RESULTS

There was a low number of missing answers. Significantly more problems were reported in all dimensions in the patient sample, and the mean visual analogue scale (VAS) score was significantly lower. Any problems were reported by 83% of the patients and by 37% of the general population. In the patient sample, 21% reported problems at the most severe level, compared with 1.5% in the general population sample. By subgroup analyses by diagnoses, the frequency of reported problems in the different dimensions varied.

CONCLUSION

Even though feasibility and discriminative validity of the EQ-5D-Y were supported in our study, further studies are needed including more patients and patient groups.

Diabetes duration and health-related quality of life in individuals with onset of diabetes in the age group 15-34 years - a Swedish population-based study using EQ-5D

Background

Diabetes with onset in younger ages affects both length of life and health status due to debilitating and life-threatening long-term complications. In addition, episodes and fear of hypoglycaemia and of long-term consequences may have a substantial impact on health status. This study aims to describe and analyse health-related quality of life (HRQoL) in individuals with onset of diabetes at the age of 15—34 years and with a disease duration of 1, 8, 15 and 24 years compared with control individuals matched for age, sex and county of residence.

Methods

Cross-sectional study of 839 individuals with diabetes and 1564 control individuals. Data on socioeconomic status and HRQoL using EQ-5D were collected by a postal questionnaire. Insulin treatment was self-reported by 94% of the patients, the majority most likely being type 1.

Results

Individuals with diabetes reported lower HRQoL, with a significantly lower mean EQ VAS score in all cohorts of disease duration compared with control individuals for both men and women, and with a significantly lower EQ-5D_index for women, but not for men, 15 years (0.76, p = 0.022) and 24 years (0.77, p = 0.016) after diagnosis compared with corresponding control individuals. Newly diagnosed individuals with diabetes reported significantly more problems compared with the control individuals in the dimension usual activities (women: 13.2% vs. 4.0%, p = 0.048; men: 11.4% vs. 4.1%, p = 0.033). In the other dimensions, differences between individuals with diabetes and control individuals were found 15 and 24 years after diagnosis: for women in the dimensions mobility, self-care, usual activities and pain/discomfort and for men in the dimension mobility. Multivariable regression analysis showed that diabetes duration, being a woman, having a lower education and not being married or cohabiting had a negative impact on HRQoL.

Conclusions

Our study confirms the negative impact of diabetes on HRQoL and that the difference to control individuals increased by disease duration for women with diabetes. The small difference one year after diagnosis could imply a good management of diabetes care and a relatively quick adaptation. Our results also indicate that gender differences still exist in Sweden, despite modern diabetes treatment and management in Sweden.

Health-Related Quality of Life 10 Years After Intracranial Aneurysm Rupture

BACKGROUND:

Experiencing an aneurysmal subarachnoid hemorrhage (SAH) could affect health-related quality of life (HRQoL) several years after the onset. Long-term studies are scarce, and there is a lack of knowledge of whether HRQoL is affected &gt; 5 years after the onset and, if so, in what dimensions. In the general population, HRQoL decreases with age and with the occurrence of a disease and differs between sexes. Factors that may influence HRQoL after aneurysmal SAH include neurological outcome, perceived recovery, aneurysm treatment, and family support.

OBJECTIVE:

To measure HRQoL and to explore factors affecting HRQoL 10 years after aneurysmal SAH.

METHODS:

A consecutive sample of all patients admitted for intracranial aneurysm rupture at a neurosurgical clinic in Stockholm (n = 217, 79.5% of eligible) were followed up from 2007 to 2008, approximately 10 years after aneurysm rupture. HRQoL was measured with EQ-5D, and the results were compared with a general population sample from the Stockholm Public Health Survey 2006 matched by age and sex.

RESULTS:

Compared with the general population, the aneurysm sample reported significantly more problems in 4 of 5 EQ-5D dimensions—mobility, self-care, usual activities, and anxiety/depression—and had significantly lower EQ-5Dindex and EQ visual analog scale values. Within the aneurysm sample, HRQoL was most affected in respondents with worse Glasgow Outcome Scale values at hospital discharge, respondents with comorbidities, and respondents with low perceived recovery.

CONCLUSION:

Aneurysmal SAH affects HRQoL to a large extent, even 10 years after the onset, indicating a need for long-term follow-up and support after the onset.

Changing healthcare utilization patterns in diabetes mellitus: case-control studies 1 year and 8 years after diagnosis

AIMS

To describe healthcare utilization patterns in young and middle-aged patients with diabetes 1 year and 8 years after diagnosis and to compare with the general population at two time points, 16 years apart.

METHODS

Four cohorts with disease duration of 1 year or 8 years were selected from the Diabetes Incidence Study in Sweden, which registers all incident cases of diabetes in the 15- to 34-year age group. Control subjects were selected from the population register matched by age, sex and county of residence. A postal questionnaire was sent to the 1983 and 1992 cohorts in 1991 and 1993, and to the 1999 and 2008 cohorts in 2007 and 2009. Nine hundred and thirteen patients with diabetes and 1679 control subjects responded.

RESULTS

One year after diagnosis, 49% of patients with diabetes in the 1992 cohort compared with 4.2% in the 2008 cohort reported visits to departments of internal medicine and endocrinology. A similar pattern was seen 8 years after diagnosis. The use of day care was 4-5 times higher among patients with diabetes compared with control subjects. Utilization of outpatient hospital care was higher among patients with diabetes compared with control subjects, even when excluding visits to diabetes clinics.

CONCLUSIONS

Excess use of health care among patients with diabetes remained 16 years after the first follow-up. Utilization patterns were stable, except for a major decrease in inpatient care 1 year after diagnosis and an increase in day care 8 years after diagnosis. Observed changes probably reflect successive reforming of diabetes care in Sweden.

Health-related quality of life (EQ-5D) among homeless persons compared to a general population sample in Stockholm County, 2006

AIMS

To describe and compare health-related quality of life (HRQoL) among homeless persons with a general population sample in Stockholm County, 2006, and to analyse the importance of certain social determinants of health among the homeless.

METHODS

Face-to-face interviews with 155 homeless persons and a postal survey to a general population sample, mainly based on the same questionnaire, including questions on social determinants of health and HRQoL measured with the EQ-5D.

RESULTS

Chronic illness was three times more common among the homeless. HRQoL was worse among homeless persons than in the general population sample: the homeless reported more problems, especially more severe problems, in all the EQ-5D dimensions and had considerably lower EQ-5D(index) and EQ(VAS) score than the general population. Most problems were reported in the dimension anxiety/depression. Among the homeless, longer duration and more severe degree of homelessness lowered HRQoL, but few determinants were statistically significantly related to HRQoL. Having mental disease significantly lowered HRQoL.

CONCLUSIONS

This study was an attempt to include hard-to-reach groups in an assessment of population health. Homeless persons had considerably worse HRQoL than the general population and reported most problems in the dimension anxiety/depression. Some diseases may contribute to causing homelessness; others may be seen as consequences. Homeless persons are a vulnerable group in society. Further interview studies are needed based on larger sample of homeless persons to explore health determinants such as sex, age, socioeconomic factors, duration and degree of homelessness, and health-related behaviours among the homeless persons.

Population health status in China: EQ-5D results, by age, sex and socio-economic status, from the National Health Services Survey 2008

PURPOSE

To measure and analyse national EQ-5D data and to provide norms for the Chinese general population by age, sex, educational level, income and employment status.

METHODS

The EQ-5D instrument was included in the National Health Services Survey 2008 (n = 120,703) to measure health-related quality of life (HRQoL). All descriptive analyses by socio-economic status (educational level, income and employment status) and by clinical characteristics (discomfort during the past 2 weeks, diagnosed with chronic diseases during the past 6 months and hospitalised during the past 12 months) were stratified by sex and age group.

RESULTS

Health status declines with advancing age, and women reported worse health status than men, which is in line with EQ-5D population health studies in other countries and previous population health studies in China. The EQ-5D instrument distinguished well for the known groups: positive association between socio-economic status and HRQoL was observed among the Chinese population. Persons with clinical characteristics had worse HRQoL than those without.

CONCLUSIONS

This study provides Chinese population HRQoL data measured by the EQ-5D instrument, based on a national representative sample. The main findings for different subgroups are consistent with results from EQ-5D population studies in other countries, and discriminative validity was supported.

Testing a Swedish child-friendly pilot version of the EQ-5D instrument--initial results

BACKGROUND

There is an increasing interest in studying health-related quality of life in children and adolescents. A Swedish child-friendly pilot version of the EQ-5D instrument has been developed. The aim of this article is to report on its assessment of feasibility and discriminative validity.

METHODS

A questionnaire with the child-friendly pilot version was addressed during a clinical examination to 260 children aged 8 years and 230 children aged 12 years. Comprehensibility and acceptability were investigated and feasibility was assessed according to missing and ambiguous answers. Discriminative validity was investigated by determining whether groups that were a priori known to differ in health status (by clinical and socio-demographic characteristics) were distinguished also by the percentage of reported problems on the five health dimensions and by visual analogue scale (VAS) scores.

RESULTS

Feasibility was supported for self-completion in the presence of an interviewer. Discriminative validity was supported as children with asthma or rhinitis, severe illness or handicap, having consulted health care during the past 3 months, overweight and obesity and children with a parent born outside the Nordic countries reported more problems and had lower VAS scores.

CONCLUSIONS

The results of the initial testing of the Swedish child-friendly pilot version of the EQ-5D instrument indicate feasibility and discriminative validity. However, further research should explore alternative modes of administration and study design, and be performed in groups with a larger proportion with diseased children.

A Swedish child-friendly pilot version of the EQ-5D instrument--the development process

BACKGROUND

Revising existing health related-quality of life (HRQoL) instruments used among adults with the intention of making them child-friendly enables the collection of similar HRQoL data in children, adolescents and adults. The aim of this article is to describe and discuss the development process of a Swedish child-friendly pilot version of the EQ-5D instrument.

METHODS

We modified the existing Swedish EQ-5D adult version to make it child-friendly. Within a multidisciplinary research group, we investigated linguistic and interpretation issues by performing face-to-face and group interviews with children and adolescents aged 6-17 years.

RESULTS

The first modification of the adult language was to change single words into words intelligible to and used by children [e.g. changing 'depression' (depression) into 'ledsen' (sad)]. The second related to whole expressions (using verb-form in the headings of dimensions).

CONCLUSION

The advantage of being able to collect much the same data from children and adolescents, for example in population surveys covering all ages and in chronic childhood diseases, as for adults might outweigh possible disadvantages of modifying existing HRQoL instruments. The Swedish child-friendly EQ-5D pilot version resulting from this development process is further tested for feasibility and construct validity in a clinical interview study; initial results are reported in a subsequent paper.

Development of the EQ-5D-Y: a child-friendly version of the EQ-5D

Purpose

To develop a self-report version of the EQ-5D for younger respondents, named the EQ-5D-Y (Youth); to test its comprehensibility for children and adolescents and to compare results obtained using the standard adult EQ-5D and the EQ-5D-Y.

Methods

An international task force revised the content of EQ-5D and wording to ensure relevance and clarity for young respondents. Children’s and adolescents’ understanding of the EQ-5D-Y was tested in cognitive interviews after the instrument was translated into German, Italian, Spanish and Swedish. Differences between the EQ-5D and the EQ-5D-Y regarding frequencies of reported problems were investigated in Germany, Spain and South Africa.

Results

The content of the EQ-5D dimensions proved to be appropriate for the measurement of HRQOL in young respondents. The wording of the questionnaire had to be adapted which led to small changes in the meaning of some items and answer options. The adapted EQ-5D-Y was satisfactorily understood by children and adolescents in different countries. It was better accepted and proved more feasible than the EQ-5D. The administration of the EQ-5D and of the EQ-5D-Y causes differences in frequencies of reported problems.

Conclusions

The newly developed EQ-5D-Y is a useful tool to measure HRQOL in young people in an age-appropriate manner.

Does income-related health inequality change as the population ages? Evidence from Swedish panel data

This paper explains and empirically assesses the channels through which population aging may impact on income-related health inequality. Long panel data of Swedish individuals is used to estimate the observed trend in income-related health inequality, measured by the concentration index (CI). A decomposition procedure based on a fixed effects model is used to clarify the channels by which population aging affects health inequality. Based on current income rankings, we find that conventional unstandardized and age-gender-standardized CIs increase over time. This trend in CIs is, however, found to remain stable when people are instead ranked according to lifetime (mean) income. Decomposition analyses show that two channels are responsible for the upward trend in unstandardized CIs - retired people dropped in relative income ranking and the coefficient of variation of health increases as the population ages.

How are homeless people treated in the healthcare system and other societal institutions? Study of their experiences and trust

Aims: To elucidate the perceived treatment that the homeless have received from the healthcare and other societal organisations and to present homeless persons’ trust in the healthcare system and suggestions of necessary changes for improving it. Methods: Homeless individuals in special houses and institutions in the County of Stockholm were asked to answer a short version of a public health survey, including added questions about how they experienced the healthcare providers’ attitudes towards them and how much trust they had in the healthcare system. A total of 155 homeless persons (123 male and 32 female) were interviewed. Results: Three-quarters of the participants stated that they had fairly or very high trust in healthcare services and also felt that they had been fairly or very well treated. Fewer females than males reported being treated well and they declared a lower degree of trust in the healthcare system. The homeless suggest that extra resources be set aside to organise their healthcare, including a higher level of knowledge of the medical problems prevailing in the group. Those who felt badly treated also asked for less neglect and disrespect from the healthcare staff. Conclusions: Even though a majority experience that they are being well treated within the healthcare system, the study also indicated disadvantages in the treatment of homeless persons in Sweden. The study also reveals an imbalance between the official ethical framework in Sweden and of the specific moral of some individual healthcare providers. One way to facilitate their entry into the healthcare system might be to create special surgeries for the homeless.

Deteriorating health status in Stockholm 1998-2002: results from repeated population surveys using the EQ-5D

RATIONALE, AIM AND METHODOLOGY: In order to measure the change in health status in Sweden, the generic health-related quality of life instrument, the EQ-5D, was included in the 1998 (n = 4,950) and 2002 (n = 49,914) cross-sectional postal Public Health Surveys, a representative sample (21-84 years) of the Stockholm County population, with response rates about 63% in both years. The EQ-5D provides data on five dimensions of health as well as an overall index value (1 = full health; 0 = dead).

RESULTS

Over time the health index decreased statistically significantly from 0.858 to 0.841 for men and from 0.833 to 0.797 for women. Women had significantly more health problems in 2002 in four out of the five dimensions, with the largest increase in the dimensions anxiety/depression (33-43%) and pain/discomfort (47-53%). The health index was significantly lower in all age-groups for women. Men had significantly more health problems 2002 in two dimensions, and the largest increase in anxiety/depression (24-31%). The health index decreased significantly over time for younger men.

CONCLUSION

The observed deterioration in health status over time gives reason for concern. Investigation of reasons for the declining health status should be a research priority.

A comparison of individual and social time trade-off values for health states in the general population

This study aimed to compare directly elicited individual time trade-off (TTO) values in a general population sample with the social values derived using the UK EQ-5D index tariff. In the Stockholm County 1998 postal Public Health Survey (n=4950, 20-88 years), the EQ-5D self-classifier, a TTO and a rating scale (RS) question were included (n=2549 for all three questions). The mean TTO (EQ-5D) value was 0.943 (0.890) in the youngest age-group and 0.699 (0.733) in the oldest age-group. The difference between TTO and EQ-5D values was greater in more severe health status groups was. The same equation as for the UK EQ-5D index tariff was estimated for TTO and RS and resulted in significant and consistent coefficients for nearly all dimensions. The coefficients for moderate problems were closer to the EQ-5D index tariff than the coefficients for severe problems. Age was also significant after controlling for the EQ-5D dimensions (p<0.05). The results suggest that individual and social TTO values differ systematically and that the difference is greater the more severe the health status is. The social EQ-5D index tariff may also underestimate the severity in health status at older ages; age appears to correlate with additional health problems not captured by the EQ-5D classification.

Increasing socio-economic inequalities in life expectancy and QALYs in Sweden 1980-1997

The aim of this study was to estimate the change in socio-economic differences in life expectancy and in quality-adjusted life years (QALYs), for men and women at different ages, in Sweden 1980 to 1997. We used data from the Swedish Survey of Living Conditions (the ULF survey), which is linked to mortality data, to estimate the life expectancy in different socio-economic groups in 1980 and 1997 (n=100 868). Health state scores were obtained by mapping responses to selected ULF survey interview questions into the generic health-related quality of life measure EQ-5D, using the UK EQ-5D index tariff (n=34 447). For 20-year-old men the difference in life expectancy between the highest (higher non-manual) and the lowest socio-economic group (unskilled manual) was 2.11 years in 1980 and 3.79 years in 1997. The corresponding figures for 20-year-old women were 1.56 in 1980 and 2.15 in 1997. The difference in QALYs between the highest and the lowest socio-economic group increased from 5.76 QALYs in 1980 to 7.06 QALYs in 1997 for 20-year-old men, and from 4.14 QALYs in 1980 to 5.66 QALYs in 1997 for 20-year-old women. The widening socio-economic inequalities over time were more stable for men than for women. We conclude that our results suggest that the socio-economic inequality in health has increased between 1980 and 1997 in Sweden.