EQ-5D Domains Research Articles

Stroke: Highlights of Selected Articles

Executive functions are cognitive processes essential for controlling goal-oriented behavior and responding to new and novel situations. Executive function includes the processes of planning, initiation, organization, inhibition, problem solving, self-monitoring, and error correction. It has been estimated that ≈75% of stroke survivors experience impaired executive function (executive dysfunction), resulting in reduced capacity to regain independence in activities of daily living, particularly when new movement strategies are necessary to compensate for limb weakness. A variety of cognitive rehabilitation interventions are implemented within clinical practice in an attempt to improve executive function and, consequently, independence with activities of daily living.1 To determine the effects of cognitive rehabilitation on executive dysfunction for adults with stroke or other nonprogressive acquired brain injuries. We searched: …

A comparison of physician-rated disease severity and patient reported outcomes in mild to moderately active ulcerative colitis

Background and aimsThe aim was to derive health state utility scores in ulcerative colitis (UC) by establishing the relationship between the physician-rated ulcerative colitis disease activity index (UCDAI) and a patient reported EQ-5D by statistically mapping the two instruments. MethodsIn a randomised controlled trial comparing oral plus enema mesalazine treatment with oral mesalazine treatment alone (PINCE), UCDAI and EQ-5D scores were collected in parallel from patients with active UC. From these data, multinomial logistic regression was used to estimate response probabilities to each of the five domains of the EQ-5D index from assessment of UC disease severity using original and abbreviated (no endoscopy) versions of the UCDAI. Predicted EQ-5D responses were converted by Monte Carlo simulation to the EQ-5D index for predicting health-related quality of life (HRQoL). The reliability of the algorithm was tested using UCDAI scores from a second mesalazine RCT (PODIUM). ResultsThe abbreviated-UCDAI showed comparable explanatory performance to the full UCDAI. For patients in remission, mean utility was 0.939, 0.944, and 0.940U for PINCEestimated, PINCEobserved, and PODIUM, respectively. Mild/moderate and relapsing cases showed mean utilities of 0.801, 0.811, and 0.775, respectively; whilst for those in severe relapse, the mean utilities were 0.630, 0.700 and 0.660units, respectively. The mean squared error between actual and predicted utilities from observations in PINCE was 0.019. ConclusionResponse mapping of UC activity to EQ-5D domains produced reliable estimates of patient-rated health state utility consistent with UCDAI rated severity. Comparing abbreviated-UCDAI and full UCDAI suggests that inclusion of endoscopy scores has limited predictive value in estimating patient HRQoL.

Utilities of the EQ-5D

Within the framework of economic evaluations, the transferability of utility scores between jurisdictions remains unclear. The EQ-5D is a generic instrument for measuring health-related quality of life in economic evaluations, which can be used for comparing utility scores across countries. At present, the EQ-5D has several national value sets or tariffs. Nevertheless, utility estimates from foreign studies are often used directly for cost-effectiveness estimates, without adapting by applying the appropriate national value set. It is unclear if this practice is advisable, due to dissimilarities between the national value sets. To examine the effects of differences in national EQ-5D value sets on absolute and marginal utilities of health states, and determine to what degree these differences can be explained by methodological factors. First, the relative importance of the EQ-5D domains for the utility estimates was compared across the 15 value sets. Second, two hypothetical health states for a depressed patient and a pain patient (21232 and 33321) were selected for additional analysis, by comparing the utilities as scored by the value sets. The marginal influence of a one-level deterioration in a domain of these health states on the utility estimate was then determined. Third, the differences between the value sets were examined in more detail by using multilevel analysis to examine the role of methodological differences in the valuation studies. Differences can be perceived between the national value sets of the EQ-5D in the preferences for the domains. The utilities of the two hypothetical health states show that the value sets differ substantially. Furthermore, the differences between the marginal values of the deteriorations are large, which can be explained partly by the type of valuation method. Other methodological differences also influence the value sets. All results indicate that the differences between the EQ-5D value sets are considerable and should not be ignored. The differences can largely be explained by methodological differences in the valuation studies. The remaining differences may reflect cultural dissimilarities between countries. Therefore, further research should focus on investigating the transferability of utilities across countries or agreeing on a standard to perform valuation studies. For the time being, transferring utilities from one country to another without any adjustment is not advisable.

Cultural adaptation and validation of a questionnaire for use in hepatitis B patients

Health-related quality of life (HRQoL) is an important aspect of the overall management of hepatitis B virus (HBV) infection. The major challenge is to find a valid and reliable disease-specific HRQoL instrument designed specifically for measuring health status in hepatitis B patient. Consequently, this study was undertaken to adapt culturally the Hepatitis Quality of Life Questionnaire (HQLQ) and assess its suitability for use in English-speaking hepatitis B virus-infected (HBV) patients in Singapore. Two patient focus groups were conducted to facilitate the cultural adaptation of the HQLQ. Reliability was assessed using Cronbach's alpha coefficients and intraclass correlation coefficients. Item-to-scale correlation was assessed using Spearman's rank correlations (rho) between scale scores and their constituent items. Convergent and divergent construct validities were tested in three and two a priori hypotheses, respectively, and the correlations were assessed using Spearman's rank correlation coefficients (rho). The culturally adapted questionnaire was tested in 298 HBV patients. The test-retest reliability was supported with 10 of the 12 scales showing acceptable correlation coefficients (i.e. alpha>0.7). Item-to-scale correlations were good with most items highly correlated with their hypothesized scales. Convergent and divergent construct validities were supported by the presence of hypothesized correlations between the HQLQ and the EQ-5D domains (eight of 10 sub-hypotheses for convergent construct validity and all hypotheses for divergent construct validity were fulfilled). In conclusion, our results showed that the culturally adapted HQLQ has good validity and reliability, making it a potentially useful outcome measure in the evaluation of HBV patients in Singapore.

How do medical students value health on the EQ-5D? Evaluation of hypothetical health states compared to the general population

BackgroundMedical students gain a particular perspective on health problems during their medical education. This article describes how medical students value 10 hypothetical health states using the EQ-5D compared to the general population.MethodsBased on a sample of 161 medical students (male: 41%) we compared valuations of 10 hypothetical EQ-5D health states collected in face to face interviews with the valuations of the general population. Self-reported health on the EQ-5D was also collected.ResultsEvery third health state was valuated higher by the medical students compared to data of the general population. The differences were independent of the severity of the hypothetical health state. Concerning the self-reported health, the majority of the students (66%) reported no problems in the five EQ-5D domains (EQ-5D VAS M = 87.3 ± 9.6 SD). However, when compared to an age-matched sample the medical students show significantly more problems in the area of pain/discomfort and anxiety/depression.ConclusionMedical students have a tendency to value health states higher than the general public. Medical professionals should be continuously aware that their assessment of the patients health state can differ from the valuations of the general population.

Comprehensiveness of Quality of Life Instruments in Capturing Concerns Related to Chemotherapy-Induced Neutropenia

Neutropenia is a serious hematologic consequence of cancer chemotherapy that can lead to further complications such as febrile neutropenia (FN). FN is potentially life threatening and often requires hospitalization. Few studies have evaluated the impact of neutropenia on quality of life (QoL). This study quantified QoL using two nonneutropenia-specific instruments, the EQ-5D questionnaire, a generic tool used to measure health-related QoL, and the Functional Assessment of Cancer Therapy - General (FACT-G) questionnaire, and a neutropenia-specific instrument, the Functional Assessment of Cancer Therapy - Neutropenia (FACT-N) questionnaire. The FACT-G is a 27-item questionnaire that examines QoL in patients with cancer using four subscales. A neutropenia-specific subscale (NSS) has been developed for use with the FACT-G; this combined questionnaire is the FACT-N. Data were collected from patients, who provided informed consent, and who were admitted to Sunnybrook Health Sciences Centre, Toronto, Canada, for the treatment of chemotherapy-induced FN. Linear regression models were fitted to examine the relationship of scores from the neutropenia-specific instrument with those obtained from the other instruments. Two models were fitted using the NSS as the response variable. Predictors for the regression models were the FACT-G scores for each of the subscales (physical, emotional, social and functional wellbeing) and the five domains of the EQ-5D (mobility, self-care, usual activity, pain/discomfort and anxiety/depression) along with the visual analog scale (VAS) component of this tool. The physical and emotional wellbeing subscales of the FACT-G had a strong relationship to the NSS (p < 0.05); the social and functional well-being subscales had a much weaker relationship (p > 0.5). For the EQ-5D, the pain/discomfort domain had the strongest relationship to the NSS (p=0.18); the remaining domains, with or without the VAS, all demonstrated a weaker relationship (p > 0.5). Model fit was assessed by the adjusted R2 statistic; it was 0.54 when FACT-G subscales were used as the predictors compared to −0.04 for the EQ-5D domains indicating that the FACT-G was a better predictor of neutropenia-related concerns. Neutropenia concerns appear to be more closely related to cancer specific QoL compared to general quality of life as demonstrated by the stronger relationship of the NSS to the FACT-G than to the EQ-5D. This may be due to the comprehensiveness of the FACT-G questionnaire where a possible score anywhere from 0 to 24 or 28 can be obtained in each of the subscales, compared to three-point descriptive system for each of the domains of the EQ-5D.

Implications of chronic obstructive pulmonary disease (COPD) on patients’ health status: A western view

To assess and compare health status among chronic obstructive pulmonary disease (COPD) patients presenting for treatment in six countries and in two healthcare settings using a generic health status instrument. A population based cross-sectional survey was conducted among 2703 patients and their physicians (1381 in primary and 1322 in specialty care) in five EU countries and the USA. Information was collected on demographic and clinical characteristics, exacerbations and health status estimated using EQ-5D. The mean EQ-5D score for COPD patients was similar between primary and specialty settings in all countries except Italy. Approximately, half of the patients indicated some impairment in health status on mobility, usual activities, pain/discomfort and anxiety/depression domains of EQ-5D. Approximately, 5% of patients in EU countries except UK had health status valued as worse than death based on valuations of the general population. Patients suffering from severe breathlessness, experiencing > or =3 exacerbations in the previous year, categorised as severe according to GOLD criteria, and experiencing day-time and night-time symptoms had significantly impaired health status. COPD patients classified as moderate/severe in clinical practice have worse health status compared to mild patients. This impairment is similar in primary and specialty setting across western countries.

Patient-reported impact of urinary incontinence—Results from treatment seeking women in 14 European countries

Objectives To describe the patient-reported impact of urinary incontinence (UI) in treatment-seeking women in Europe. Design PURE was a non-interventional, observational study, which aimed to describe the direct costs of treatment for European women seeking treatment for UI. A secondary study objective was to describe the impact of UI on health-related quality of life (HRQoL) by UI subtype and severity of disease. This paper presents the results from quality of life assessments as well as bothersomeness and interference with daily activities from the first study observation. Subjects Nine thousand four hundred and eighty-seven European women who had UI symptoms in the last 12 months were enrolled. Their UI symptoms were frequently those defined as mixed urinary incontinence (MUI) and were moderate to severe in nature. Measurements HRQoL was assessed at the first observation using the urinary Incontinence-specific Quality of Life Questionnaire (I-QOL) and the EQ-5D, a generic quality of life questionnaire. Data collected from EQ-5D provided insight into the patients’ general health perception, while the I-QOL data indicated how affected the women were about their UI symptoms. Higher EQ-5D and I-QOL scores represent better quality of life. Patients were asked to indicate how much UI symptoms limited selected activities and to indicate the degree to which they found their symptoms to be bothersome. Results Overall, the median self-rated health status on the EQ-5D visual analogue scale (VAS) was 70.0 and the median EQ-5D health state index was 0.85, with small but noticeable differences observed between countries. Of the five health dimensions of the EQ-5D, patients’ self-care appeared to be the least affected by UI, with fewer than 10% of the women reporting that they had some problems. Between 20 and 40% of patients had some problems with their mobility and usual activities, or had pain/discomfort or anxiety/depression. However, the impact of existing co-morbidity was not assessed and may have affected some women's scoring of the EQ-5D domains. The mean total I-QOL score overall was 57.7 and of the three subscales of the I-QOL, psychosocial impact had the highest overall scores, representing fewer problems, with lower scores observed for the avoidance and limiting behaviour subscale, and even lower scores for the social embarrassment subscale. The greatest patient-reported impact of UI symptoms on activities was on exercise, with more than 45% of patients moderately to totally limited in this activity. In most of the countries, more than 60% of the women reported that they were moderately to extremely bothered by their UI symptoms. Conclusions There was considerable impact of UI on HRQoL in a treatment seeking population, as demonstrated by the disease-specific quality of life scale and by the high percentage of patients who were bothered by their symptoms.

The Economic and Quality of Life Impact of Seasonal Allergic Conjunctivitis in a Spanish Setting

Introduction: Seasonal allergic conjunctivitis (SAC) is a highly prevalent condition that exacts a range of costs from its sufferers. The aim of this study was to examine quality of life (QoL) and economic consequences of SAC amongst private health care patients in Spain. Methods: 201 sufferers of SAC and 200 controls were recruited from four private eye clinics and one public hospital in five Spanish cities: Alicante, Madrid, Albacete, Las Palmas de Gran Canarias and Valladolid. Participants were between 10 and 80 years of age and Spanish speaking. All potential participants were asked selected questions and sorted into one of the two groups or excluded. Sufferers were administered a set of four questionnaires by researchers consisting of the EQ-5D Health Questionnaire, the National Eye Institute (US) Visual Functioning Questionnaire 25 (VFQ-25), the Rhinoconjunctivitis Quality of Life Questionnaire (RQLQ) and a Health Economic and Demographic Questionnaire (HEDQ). Control participants self-administered the full EQ-5D and VFQ-25 and abbreviated versions of the RQLQ and HEDQ. Results: The groups were comparable in terms of age and sex, but sufferers had a significantly higher hourly income than controls (p = 0.02). Sufferers exhibited a significantly higher incidence of asthma, nasal symptoms, perennial allergic conjunctivitis, food allergies and other allergies (p < 0.01 for all comorbidities). Sufferers returned significantly lower quality of life scores than controls in all EQ-5D domains other than mobility (p = 0.14). SAC VFQ-25 scores were significantly less than in controls in the overall vision (p < 0.01), distance vision (p < 0.01), ocular pain (p < 0.01), mental health (p = 0.01), role limitations (p < 0.01), and dependency (p = 0.01) domains. Mean scores for the activity domain of the RQLQ were greater in the sufferer group than the control group (P < 0.01) . The total mean per-sufferer cost of SAC amongst our sample of private patients was 348.50 Euros. Discussion: Sufferers experienced QoL reductions in general health and specific aspects of vision as a result of their SAC. In relative terms, the per-capita economic cost of the condition was higher than in a previous public health care study. This was ascribed to sufferers' willingness-to-pay for symptom alleviation. The unexpectedly high expenditure of the proportion of SAC sufferers who receive private health care serves to highlight the importance of SAC as a costly condition. It also illustrates the need to account for both private and public heath care modalities when attempting to ascribe a total cost to a medical condition.

Acceptability of less than perfect health states

Health normally deteriorates beyond a certain age. This means, in Amartya Sen's terms, that one's health capabilities decline beyond a certain age, making it more difficult to achieve functionings such as mobility or sexual activity. In this paper, we investigate whether this normal reduction in quality of life also induces less than perfect health states to be considered acceptable at advanced stages of life. In other words, we investigate whether it is considered acceptable that health capabilities decline over time. In this study, we use domain-specific descriptions of health (mostly following the EQ-5D domains) in order to investigate whether the acceptability of less than perfect health states is similar for all types of health losses. Besides a theoretical consideration of this issue, we present some empirical evidence based on the answers of 226 respondents to a web-based survey. The results show that often individuals do indeed consider less than perfect health states acceptable, especially at more advanced stages of life. Mild health problems are more often considered acceptable than severe health problems. The acceptability of health states is related to the quality of life score of these states, i.e., worse states are considered less acceptable. This may have implications for the allocation of scarce health care resources.

Post stroke health-related quality of life, stroke severity and function: A longitudinal cohort study.

BackgroundHealth related quality of life (HRQoL) is a determinant of physical, social and emotional well-being post-stroke.ObjectivesThis study aimed to correlate self-reported HRQoL with activities of daily living (ADL) and stroke severity.MethodA longitudinal observational study was conducted at a rehabilitation centre in the Western Cape, South Africa. Stroke inpatients were sampled over 6 months. The Euro-QoL Five Dimensions instrument (EQ5D-3L) for self-reported HRQoL, Barthel Index (BI) for function and independence in ADL, and modified Rankin Scale (mRS) for stroke severity were administered on admission and discharge. Statistical analysis was performed using Statistical Package for the Social Sciences (SPSS) version 25.ResultsOf the 54 potential participants, 49 met inclusion criteria and 41 completed reassessments (median age 48 years [interquartile range {IQR} 39–60]; median length of stay 53 days [IQR 46–60]). Most participants had infarctions (89.90%); with hypertension or diabetes risk factors (73.47% and 28.57%, respectively). The BI and mRS scores improved significantly (p < 0.001) with very strong correlation between scores (rs = -0.874, p < 0.001); indicating a trend of decreased stroke severity as function improved. The EQ5D Visual Analog Scale (VAS) scores (p < 0.001) and domains mobility, self-care, usual activities (p < 0.001) and pain/discomfort (p = 0.034) improved significantly. The anxiety/depression domain showed a non-significant change (p = 0.378). A weak negative significant correlation existed between EQ5D VAS and mRS scores (rs = -0.362; p = 0.02); indicating a trend that HRQoL was not improving to the degree stroke severity decreased. A weak positive significant correlation was seen between EQ5D VAS and BI scores (rs = 0.329; p = 0.036).ConclusionAlthough an improvement was noted in HRQoL, EQ5D VAS scores tended not to improve as strongly, despite significant improvements in function and stroke severity. These findings demonstrate the need for psychological support and pain management interventions for adjustment post-stroke.