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Liao M, Wu H, Yang Z, Huang Y, Janssen MF, Bonsel G, Luo N. Testing four cognition bolt-on items to the EQ-5D in a general Chinese population. THE EUROPEAN JOURNAL OF HEALTH ECONOMICS : HEPAC : HEALTH ECONOMICS IN PREVENTION AND CARE 2024:10.1007/s10198-024-01714-x. [PMID: 39162893 DOI: 10.1007/s10198-024-01714-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 07/24/2024] [Indexed: 08/21/2024]
Abstract
OBJECTIVES This study aimed to evaluate the psychometric properties of four candidate cognition bolt-on items and their combinations to the EQ-5D-5L. METHODS Four cognition items (concentration, memory, calculation, and learning) were developed as separate questionnaire items, and were administered with the standard EQ-5D-5L to 640 individuals in a general population survey in China. From the 4 items, 11 compound items were constructed, and the 'worse level counts' rule was used to calculate a compound item score. Psychometric performance of the cognition bolt-ons was assessed in terms of informativity, convergent validity, explanatory power, and discriminatory power. RESULTS The tested four cognition bolt-on items improved the informativity, convergent validity, explanatory power, and discriminatory power of EQ-5D-5L, with calculation and learning yielding better psychometric performance. The compound bolt-on items that coverd a range of cognitive functions demonstrated superior psychometric performance compared to single-aspect bolt-on items, with those items covering calculation and learning resulting in better psychometric performance. CONCLUSION This study confirmed the validity of the tested cognition bolt-ons in a general Chinese population. It supported the use of a compound bolt-on item covering a range of cognitive functions such as the ability to calculate and learn.
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Affiliation(s)
- Meixia Liao
- Saw Swee Hock School of Public Health, National University of Singapore, 12 Science Drive 2, #10-01, Singapore, 117549, Singapore
| | - Hongyan Wu
- School of Medicine and Health Management, Guizhou Medical University, Guiyang, China
| | - Zhihao Yang
- Health Services Management Department, Guizhou Medical University, Guiyang, China
| | - Yan Huang
- Nanming Center for Disease Control and Prevention, Guiyang, China
| | - Mathieu F Janssen
- Section Medical Psychology and Psychotherapy, Department of Psychiatry, Erasmus MC, Rotterdam, The Netherlands
| | - Gouke Bonsel
- EuroQol Research Foundation, Rotterdam, The Netherlands
| | - Nan Luo
- Saw Swee Hock School of Public Health, National University of Singapore, 12 Science Drive 2, #10-01, Singapore, 117549, Singapore.
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Janols H, Wadsten C, Forssell C, Raffeti E, Janson C, Zhou X, Kisiel MA. Enhancing EQ-5D-5L Sensitivity in Capturing the Most Common Symptoms in Post-COVID-19 Patients: An Exploratory Cross-Sectional Study with a Focus on Fatigue, Memory/Concentration Problems and Dyspnea Dimensions. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2024; 21:591. [PMID: 38791805 PMCID: PMC11121728 DOI: 10.3390/ijerph21050591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 04/30/2024] [Accepted: 05/02/2024] [Indexed: 05/26/2024]
Abstract
This study aimed to determine whether the EQ-5D-5L tool captures the most common persistent symptoms, such as fatigue, memory/concentration problems and dyspnea, in patients with post-COVID-19 conditions while also investigating if adding these symptoms improves the explained variance of the health-related quality of life (HRQoL). In this exploratory cross-sectional study, two cohorts of Swedish patients (n = 177) with a history of COVID-19 infection answered a questionnaire covering sociodemographic characteristics and clinical factors, and their HRQoL was assessed using EQ-5D-5L with the Visual Analogue Scale (EQ-VAS). Spearman rank correlation and multiple regression analyses were employed to investigate the extent to which the most common persistent symptoms, such as fatigue, memory/concentration problems and dyspnea, were explained by the EQ-5D-5L. The explanatory power of EQ-5D-5L for EQ-VAS was also analyzed, both with and without including symptom(s). We found that the EQ-5D-5L dimensions partly captured fatigue and memory/concentration problems but performed poorly in regard to capturing dyspnea. Specifically, the EQ-5D-5L explained 55% of the variance in memory/concentration problems, 47% in regard to fatigue and only 14% in regard to dyspnea. Adding fatigue to the EQ-5D-5L increased the explained variance of the EQ-VAS by 5.7%, while adding memory/concentration problems and dyspnea had a comparatively smaller impact on the explained variance. Our study highlights the EQ-5D-5L's strength in capturing fatigue and memory/concentration problems in post-COVID-19 patients. However, it also underscores the challenges in assessing dyspnea in this group. Fatigue emerged as a notably influential symptom, significantly enhancing the EQ-5D-5L's predictive ability for these patients' EQ-VAS scores.
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Affiliation(s)
- Helena Janols
- Department of Medical Sciences, Section of Infectious Diseases, Uppsala University, 751 85 Uppsala, Sweden
| | - Carl Wadsten
- Department of Statistics, Uppsala University, 751 20 Uppsala, Sweden;
| | - Christoffer Forssell
- Department of Medical Sciences, Uppsala University, 751 85 Uppsala, Sweden;
- Department of Global Public Health, Karolinska Institute, 171 77 Stockholm, Sweden;
| | - Elena Raffeti
- Department of Global Public Health, Karolinska Institute, 171 77 Stockholm, Sweden;
| | - Christer Janson
- Department of Medical Sciences, Respiratory, Allergy and Sleep Research, Uppsala University, 751 85 Uppsala, Sweden;
| | - Xingwu Zhou
- Department of Statistics, Uppsala University, 751 20 Uppsala, Sweden;
- Department of Medical Sciences, Respiratory, Allergy and Sleep Research, Uppsala University, 751 85 Uppsala, Sweden;
- Department of Medical Sciences, Clinical Physiology, Uppsala University, 751 85 Uppsala, Sweden
| | - Marta A Kisiel
- Department of Medical Sciences, Occupational and Environmental Medicine, Uppsala University, 753 10 Uppsala, Sweden
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Oyesanya TO, Ibemere SO, You H, Emerson MM, Pan W, Palipana A, Kandel M, Ingram D, Soto M, Pioppo A, Albert B, Walker-Atwater T, Hawes J, Komisarow J, Ramos K, Byom L, Gonzalez-Guarda R, Van Houtven CH, Agarwal S, Prvu Bettger J. Efficacy of BETTER transitional care intervention for diverse patients with traumatic brain injury and their families: Study protocol of a randomized controlled trial. PLoS One 2024; 19:e0296083. [PMID: 38394279 PMCID: PMC10890764 DOI: 10.1371/journal.pone.0296083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 11/08/2023] [Indexed: 02/25/2024] Open
Abstract
OBJECTIVE The purpose of this study is to examine the efficacy of BETTER (Brain Injury, Education, Training, and Therapy to Enhance Recovery) vs. usual transitional care management among diverse adults with traumatic brain injury (TBI) discharged home from acute hospital care and families. METHODS This will be a single-site, two-arm, randomized controlled trial (N = 436 people, 218 patient/family dyads, 109 dyads per arm) of BETTER, a culturally- and linguistically-tailored, patient- and family-centered, TBI transitional care intervention for adult patients with TBI and families. Skilled clinical interventionists will follow a manualized protocol to address patient/family needs. The interventionists will co-establish goals with participants; coordinate post-hospital care, services, and resources; and provide patient/family education and training on self- and family-management and coping skills for 16 weeks following hospital discharge. English- and Spanish-speaking adult patients with mild-to-severe TBI who are discharged directly home from the hospital without inpatient rehabilitation or transfer to other settings (community discharge) and associated family caregivers are eligible and will be randomized to treatment or usual transitional care management. We will use intention-to-treat analysis to determine if patients receiving BETTER have a higher quality of life (primary outcome, SF-36) at 16-weeks post-hospital discharge than those receiving usual transitional care management. We will conduct a descriptive, qualitative study with 45 dyads randomized to BETTER, using semi-structured interviews, to capture perspectives on barriers and facilitators to participation. Data will be analyzed using conventional content analysis. Finally, we will conduct a cost/budget impact analysis, evaluating differences in intervention costs and healthcare costs by arm. DISCUSSION Findings will guide our team in designing a future, multi-site trial to disseminate and implement BETTER into clinical practice to enhance the standard of care for adults with TBI and families. The new knowledge generated will drive advancements in health equity among diverse adults with TBI and families. TRIAL REGISTRATION NCT05929833.
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Affiliation(s)
- Tolu O. Oyesanya
- Duke University School of Nursing, Durham, NC, United States of America
| | - Stephanie O. Ibemere
- Duke University School of Nursing, Durham, NC, United States of America
- Duke Global Health Institute, Durham, NC, United States of America
| | - HyunBin You
- Duke University School of Nursing, Durham, NC, United States of America
| | | | - Wei Pan
- Duke University School of Nursing, Durham, NC, United States of America
- Duke University School of Medicine, Durham, NC, United States of America
| | - Anushka Palipana
- Duke University School of Nursing, Durham, NC, United States of America
| | - Melissa Kandel
- Department of Rehabilitation Services, Duke University Health System, Durham, NC, United States of America
| | - Darius Ingram
- Department of Rehabilitation Services, Duke University Health System, Durham, NC, United States of America
| | - Mayra Soto
- Department of Rehabilitation Services, Duke University Health System, Durham, NC, United States of America
| | - Anne Pioppo
- Department of Rehabilitation Services, Duke University Health System, Durham, NC, United States of America
| | - Brittany Albert
- Department of Rehabilitation Services, Duke University Health System, Durham, NC, United States of America
| | | | - Jodi Hawes
- Duke University School of Medicine, Durham, NC, United States of America
| | - Jordan Komisarow
- Duke University School of Medicine, Durham, NC, United States of America
| | - Katherine Ramos
- Duke University School of Medicine, Durham, NC, United States of America
| | - Lindsey Byom
- Department of Allied Health Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States of America
| | | | - Courtney H. Van Houtven
- Duke University School of Medicine, Durham, NC, United States of America
- Durham VA Health Care System, Center of Innovation to Accelerate Discovery and Practice Transformation (ADAPT), Durham, NC, United States of America
| | - Suresh Agarwal
- Duke University School of Medicine, Durham, NC, United States of America
| | - Janet Prvu Bettger
- Department of Health and Rehabilitation Sciences, Temple University, Philadelphia, PA, United States of America
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Wang P, Chong SL, Tan RLY, Luo N. A hearing bolt-on item increased the measurement properties of the EQ-5D-5L in a community-based hearing loss screening program. THE EUROPEAN JOURNAL OF HEALTH ECONOMICS : HEPAC : HEALTH ECONOMICS IN PREVENTION AND CARE 2023; 24:393-398. [PMID: 35661940 DOI: 10.1007/s10198-022-01479-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
OBJECTIVE To investigate the measurement properties of a hearing item ('bolt-on') added to the EQ-5D-5L descriptive system. METHODS Cross-sectional data on the EQ-5D-5L descriptive system with the addition of a hearing bolt-on item, namely, 'I have no/slight/moderate/severe/extreme problems hearing', was collected through face-to-face interviews with 418 participants of a community-based hearing loss screening program in Singapore. The distribution of responses to the EQ-5D and the hearing items were compared in terms of the proportion of 'no problems' and the Shannon index (H'). The measurement properties of the hearing item were assessed by testing its correlation with the hearing thresholds in dBHL; and with the standard EQ-5D items. The properties were also evaluated by comparing the proportion of 'full health' in participants with different hearing severities between standard and hearing bolt-on EQ-5D-5L; and the ability in identifying the participants between the standard EQ-5D-5L index score and the level sum score (LSS) of the hearing bolt-on system. RESULTS Compared to the standard EQ-5D items, the hearing item has a lower proportion of 'no problems' (80.1% vs. 80.9-97.9%); more evenly-distributed responses (H' value: 0.92 vs. 0.18-0.87); and much stronger correlation with the hearing thresholds (|r|: 0.322 and 0.325 vs. 0.008-0.139). It generally has a weak correlation with EQ-5D items (|r|: 0.055-0.160); and reduces the proportion of 'full health' for the participants with different hearing functions with the percentage reduction varying from 6.6 to 22.7%. The LSS is more discriminative than the standard EQ-5D-5L index score as well (F-statistic: 12.71 and 13.93 vs.4.06 and 4.70). CONCLUSIONS A hearing bolt-on to EQ-5D-5L can validly measure hearing severities and is likely to increase the sensitivity of the resultant preference-based EQ-5D index to hearing loss.
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Affiliation(s)
- Pei Wang
- School of Public Health, Fudan University, Shanghai, China.
- Key Lab of Health Technology Assessment, National Health Commission of the People's Republic of China (Fudan University), Shanghai, China.
| | - Sheue-Lih Chong
- Department of Otolaryngology - Head and Neck Surgery, National University Hospital, Singapore, Singapore
| | - Rachel Lee-Yin Tan
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore
| | - Nan Luo
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore
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Dewilde S, Philips G, Paci S, Beauchamp J, Chiroli S, Quinn C, Day L, Larkin M, Palace J, Berrih-Aknin S, Claeys KG, Muppidi S, Mantegazza R, Saccà F, Meisel A, Bassez G, Murai H, Janssen MF. Patient-reported burden of myasthenia gravis: baseline results of the international prospective, observational, longitudinal real-world digital study MyRealWorld-MG. BMJ Open 2023; 13:e066445. [PMID: 36720569 PMCID: PMC9890761 DOI: 10.1136/bmjopen-2022-066445] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
OBJECTIVES Myasthenia gravis (MG) is a rare, chronic, autoimmune neuromuscular disease which can affect functional and mental aspects of health and health-related quality of life (HRQoL). This study aims to obtain detailed knowledge of the impact of MG on HRQoL in a broad population from the perspective of the patient. DESIGN Prospective, observational, digital, longitudinal real-world study. SETTING Adult patients with MG from seven countries (USA, Japan, Germany, UK, Italy, Spain and Canada) downloaded a mobile application onto their phones and entered data about themselves and their MG. OUTCOME MEASURES Data was collected using the following general and disease-specific patient-reported outcome measurements: EuroQol 5 Domains Health-Related Quality of Life Questionnaire (EQ-5D-5L), Myasthenia Gravis Activities of Daily Living (MG-ADL), Myasthenia Gravis Quality of Life 15-item revised scale (MG-QoL-15r), Hospital Anxiety and Depression Scale (HADS) and Health Utilities Index III (HUI3). Patients were categorised by their self-assessed Myasthenia Gravis Foundation of America (MGFA) class (I-V). RESULTS Baseline results of 841 participants (mean age 47 years, 70% women) are reported . The distribution across the MGFA classes was: 13.9%, 31.0%, 38.1%, 15.5% and 1.6% for classes I-V. The MGFA class was a strong predictor of all aspects of HRQoL, measured with disease-specific and with generic instruments. The domains in which patients with MG most frequently mentioned problems were usual activities, anxiety and depression, tiredness, breathing and vision. The mean total MG-ADL Score was positively associated with increasing MGFA classes: 2.7, 4.4, 6.3 and 8.4 for MGFA classes I-IV. Mean baseline EQ-5D-5L utility was also associated with MGFA classes and was 0.817, 0.766, 0.648 and 0.530 for MGFA class I-IV. CONCLUSIONS MG has a large impact on key aspects of health and HRQoL. The impact of this disease increases substantially with increasing disease severity.
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Affiliation(s)
| | | | - Sandra Paci
- Market Access & Patient Advocacy, argenx, Ghent, Belgium
| | - Jon Beauchamp
- Market Access & Patient Advocacy, argenx, Ghent, Belgium
| | | | | | | | | | | | - Sonia Berrih-Aknin
- INSERM, Institute of Myology, Center of Research in Myology, Sorbonne Université, Paris, France
| | - Kristl G Claeys
- Department of Neurology, KU Leuven University Hospitals, Leuven, Belgium
- Laboratory for Muscle Diseases and Neuropathies, Department of Neurosciences, KU Leuven, Leuven, Belgium
| | - Srikanth Muppidi
- Department of Neurology and Neurosciences, Stanford University, Stanford, California, USA
| | - Renato Mantegazza
- Fondazione IRCCS, Istituto Nazionale Neurologico Carlo Besta, Milano, Italy
- Associazione Italiana Miastenia e Malattie Immunodegenerative, Milan, Italy
| | - Francesco Saccà
- DNSRO Department, University of Naples Federico II, Napoli, Italy
| | - Andreas Meisel
- Neurology, Charite Universitatsmedizin Berlin, Berlin, Germany
| | - Guillaume Bassez
- Neuromuscular Diseases Reference Center, Pitié-Salpêtrière University Hospital, Paris, France
| | - Hiroyuki Murai
- Department of Neurology, International University of Health and Welfare, Narita, Japan
| | - M F Janssen
- Department of Medical Psychology and Psychotherapy, Erasmus University Rotterdam, Rotterdam, The Netherlands
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Geraerds AJLM, Polinder S, Spronk I, Olde Loohuis AGM, de Groot A, Bronner MB, Haagsma JA. Sensitivity of the EQ-5D-5L for fatigue and cognitive problems and their added value in Q-fever patients. Qual Life Res 2022; 31:2083-2092. [PMID: 35091984 PMCID: PMC8799410 DOI: 10.1007/s11136-021-03069-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/10/2021] [Indexed: 11/24/2022]
Abstract
Purpose Measuring health-related quality of life (HRQoL) with the EQ-5D-5L might lack sensitivity for disease-specific health complaints. This cross-sectional study analyzed whether fatigue and cognitive problems are captured by the EQ-5D-5L in a Q-fever patient population with persistent fatigue/cognitive problems, and whether addition of fatigue/cognition improved the explained variance for HRQoL. Methods A Dutch sample of Q-fever patients filled out the EQ-5D-5L and EQ VAS, the fatigue subscale of the Checklist Individual Strength, and a cognition dimension in the EQ-5D-5L format. The extent to which fatigue and cognition were captured by the EQ-5D-5L was determined based on distributional effects, head-to-head comparisons, Spearman rank correlation coefficients, and regression analyses. Explanatory power was determined of the EQ-5D-5L for the EQ VAS with and without a fatigue and cognition dimension. Results Out of 432 respondents, 373(86%) reported severe fatigue, 387(90%) cognitive problems. EQ-5D-5L utility and EQ VAS scores of respondents reporting severe fatigue/cognitive problems were significantly lower. Fatigue was strongly correlated with EQ-5D-5L dimensions usual activities and pain/discomfort (r = 0.602 and r = 0.510) and moderately with other EQ-5D-5L dimensions (r = 0.305–0.476). Cognition was strongly correlated with usual activities (r = 0.554) and moderately with other dimensions (r = 0.291–0.451). Adding fatigue to the EQ-5D-5L increased explanatory power for the EQ VAS with 6%. Conclusion Fatigue and cognitive problems in Q-fever patients were partially captured by the EQ-5D-5L dimensions. The addition of fatigue to the EQ-5D-5L slightly improved explained variance for the EQ VAS. This potentially also accounts for patients who experience sequelae of other infectious diseases, such as COVID-19. Supplementary Information The online version contains supplementary material available at 10.1007/s11136-021-03069-9.
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Affiliation(s)
- A J L M Geraerds
- Department of Public Health, Erasmus MC, University Medical Center Rotterdam, P.O. Box 2040, 3000 CA, Rotterdam, The Netherlands.
| | - Suzanne Polinder
- Department of Public Health, Erasmus MC, University Medical Center Rotterdam, P.O. Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - Inge Spronk
- Department of Public Health, Erasmus MC, University Medical Center Rotterdam, P.O. Box 2040, 3000 CA, Rotterdam, The Netherlands.,Association of Dutch Burn Centres, Maasstad Hospital, Rotterdam, The Netherlands
| | | | | | - Madelon B Bronner
- Department of Public Health, Erasmus MC, University Medical Center Rotterdam, P.O. Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - Juanita A Haagsma
- Department of Public Health, Erasmus MC, University Medical Center Rotterdam, P.O. Box 2040, 3000 CA, Rotterdam, The Netherlands
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Synodinou D, Savoie-White FH, Sangone A, Chang SL, Beaudoin Cloutier C, Bergeron F, Guertin JR. Health utilities in burn injury survivors: A systematic review. Burns 2021; 48:13-22. [PMID: 34844813 DOI: 10.1016/j.burns.2021.09.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 07/26/2021] [Accepted: 09/02/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND An estimated 11 million burn injuries with medical attention occur every year worldwide. Although potentially deadly, burn injuries are now considered a chronic disease with multiple lifetime physical and psychological sequelae. However, it remains unclear how these events affect patients' utility scores. We aimed to conduct a systematic review to summarize the utility scores of burn injury survivors. METHODS We conducted on March 18th, 2020 a systematic review of the published literature using a search strategy designed in collaboration with a research librarian. Our search strategy aimed to identify studies that provided burn injury survivors' utility scores via a standardized indirect instrument. RESULTS We identified 15 studies that reported burn injury survivors' utility scores. Most studies used the EQ-5D instruments to assess patients' utility scores. Results varied substantially between studies, ranging from a low of 0.06 to a high of 0.972. Our review identified two key trends. First, utility scores seem to be negatively correlated with the severity of the burn injury. Second, utility scores in adults tend to increase in function of the time since injury. CONCLUSION Unfortunately, due to differences in study design and settings, patient populations and instruments used to assess patients' utility scores, we were unable to combine all study results into a single value. In spite of this limit, results we identified support previous trends identified by others regarding the relationship between utility scores and the burn injury severity and/or the time since injury.
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Affiliation(s)
- Dafni Synodinou
- Centre de recherche du CHU de Québec - Université Laval, Quebec City, Canada
| | - Félix H Savoie-White
- Département de médecine sociale et préventive, Faculté de Médecine, Université Laval, Quebec City, Canada
| | - Alassane Sangone
- Centre de recherche du CHU de Québec - Université Laval, Quebec City, Canada; Département de médecine sociale et préventive, Faculté de Médecine, Université Laval, Quebec City, Canada
| | - Sue-Ling Chang
- Centre de recherche du CHU de Québec - Université Laval, Quebec City, Canada
| | | | | | - Jason Robert Guertin
- Centre de recherche du CHU de Québec - Université Laval, Quebec City, Canada; Département de médecine sociale et préventive, Faculté de Médecine, Université Laval, Quebec City, Canada.
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8
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Geraerds AJLM, Bonsel GJ, Janssen MF, Finch AP, Polinder S, Haagsma JA. Methods Used to Identify, Test, and Assess Impact on Preferences of Bolt-Ons: A Systematic Review. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2021; 24:901-916. [PMID: 34119088 DOI: 10.1016/j.jval.2020.12.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 12/07/2020] [Accepted: 12/14/2020] [Indexed: 06/12/2023]
Abstract
OBJECTIVES The question of whether additional dimensions should be added to the EQ-5D, so-called bolt-ons, has been researched since the 1990s. Several candidate bolt-ons have been tested. The aim of this systematic review was to provide an overview of EQ-5D bolt-on studies, including the origin of possible suitable bolt-ons, their format, and methods that were used to examine their value. METHODS Studies were identified through database search and reference screening and assessed based on a set of inclusion criteria. All studies that investigated bolt-ons for the EQ-5D were eligible for inclusion. Two reviewers independently extracted information from all included studies on objectives, study design, EQ-5D version used, the investigated bolt-ons, methods used to achieve objectives, and outcomes. RESULTS Of 308 initially identified studies, 28 studies met the inclusion criteria. Of these studies, 3 identified potentially suitable bolt-on dimensions, 13 investigated the psychometric performance of EQ-5D + bolt-on(s), and 6 investigated the impact of the bolt-on on health state preferences. In total, 26 bolt-ons were identified, of which cognition was the most frequently mentioned. A wide variety of bolt-on identification methods, psychometric performance tests, and health state valuation methods were used in the included studies. CONCLUSION A range of bolt-on dimensions has been investigated using diverse methods. Guidelines are needed to standardize the wording of the bolt-on dimension and response options, evaluate minimal important gain of the bolt-on, and facilitate quality assessment of bolt-on studies. Subsequently, guidelines will facilitate decision making on whether or not to implement a bolt-on dimension to the EQ-5D.
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Affiliation(s)
| | - Gouke J Bonsel
- Erasmus MC, University Medical Center Rotterdam, Department of Public Health, The Netherlands; EuroQol Research Foundation, Rotterdam, The Netherlands
| | - Mathieu F Janssen
- Section Medical Psychology and Psychotherapy, Department of Psychiatry, Erasmus MC, Rotterdam, The Netherlands; EuroQol Research Foundation, Rotterdam, The Netherlands
| | | | - Suzanne Polinder
- Erasmus MC, University Medical Center Rotterdam, Department of Public Health, The Netherlands
| | - Juanita A Haagsma
- Erasmus MC, University Medical Center Rotterdam, Department of Public Health, The Netherlands
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