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Muchadeyi MT, Hernandez-Villafuerte K, Di Tanna GL, Eckford RD, Feng Y, Meregaglia M, Peasgood T, Petrou S, Ubels J, Schlander M. Quality Appraisal in Systematic Literature Reviews of Studies Eliciting Health State Utility Values: Conceptual Considerations. PHARMACOECONOMICS 2024; 42:767-782. [PMID: 38551803 PMCID: PMC11180162 DOI: 10.1007/s40273-024-01365-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/22/2024] [Indexed: 06/16/2024]
Abstract
BACKGROUND The increasing number of studies that generate health state utility values (HSUVs) and the impact of HSUVs on cost-utility analyses make a robust tailored quality appraisal (QA) tool for systematic reviews of these studies necessary. OBJECTIVE This study aimed to address conceptual issues regarding QA in systematic reviews of studies eliciting HSUVs by establishing a consensus on the definitions, dimensions and scope of a QA tool specific to this context. METHODS A modified Delphi method was used in this study. An international multidisciplinary panel of seven experts was purposively assembled. The experts engaged in two anonymous online survey rounds. After each round, the experts received structured and controlled feedback on the previous phase. Controlled feedback allowed the experts to re-evaluate and adjust their positions based on collective insights. Following these surveys, a virtual face-to-face meeting was held to resolve outstanding issues. Consensus was defined a priori at all stages of the modified Delphi process. RESULTS The response rates to the first-round and second-round questionnaires and the virtual consensus meeting were 100%, 86% and 71%, respectively. The entire process culminated in a consensus on the definitions of scientific quality, QA, the three QA dimensions-reporting, relevance and methodological quality-and the scope of a QA tool specific to studies that elicit HSUVs. CONCLUSIONS Achieving this consensus marks a pivotal step towards developing a QA tool specific to systematic reviews of studies eliciting HSUVs. Future research will build on this foundation, identify QA items, signalling questions and response options, and develop a QA tool specific to studies eliciting HSUVs.
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Affiliation(s)
- Muchandifunga Trust Muchadeyi
- Division of Health Economics, German Cancer Research Centre (DKFZ) Foundation under Public Law, Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
- Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Karla Hernandez-Villafuerte
- Division of Health Economics, German Cancer Research Centre (DKFZ) Foundation under Public Law, Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
| | - Gian Luca Di Tanna
- Department of Business Economics, Health and Social Care (DEASS), University of Applied Sciences and Arts of Southern Switzerland, Manno, Lugano, Switzerland
- The George Institute for Global Health, University of New South Wales (UNSW Sydney), Sydney, NSW, Australia
| | - Rachel D Eckford
- Division of Health Economics, German Cancer Research Centre (DKFZ) Foundation under Public Law, Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
| | - Yan Feng
- Wolfson Institute of Population Health, Queen Mary University of London, London, UK
| | - Michela Meregaglia
- Centre for Research on Health and Social Care Management (CERGAS), SDA Bocconi School of Management, Milan, Italy
| | - Tessa Peasgood
- Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia
- Sheffield Centre for Health and Related Research, University of Sheffield, Sheffield, UK
| | - Stavros Petrou
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| | - Jasper Ubels
- Division of Health Economics, German Cancer Research Centre (DKFZ) Foundation under Public Law, Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
- Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Michael Schlander
- Division of Health Economics, German Cancer Research Centre (DKFZ) Foundation under Public Law, Im Neuenheimer Feld 280, 69120, Heidelberg, Germany.
- Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany.
- Alfred Weber Institute for Economics (AWI), University of Heidelberg, Heidelberg, Germany.
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Aggio D, Dixon C, Law EH, Randall R, Price T, Lloyd A. Estimation of health utility values for alopecia areata. Qual Life Res 2024; 33:1581-1592. [PMID: 38551802 PMCID: PMC11116246 DOI: 10.1007/s11136-024-03645-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2024] [Indexed: 05/24/2024]
Abstract
PURPOSE Alopecia areata (AA) is an autoimmune-mediated inflammatory dermatological disease characterised by non-scarring hair loss affecting the scalp and sometimes other hair-bearing sites. This study aimed to elicit health state utility values (HSUVs) from the UK general population for AA using time trade off (TTO) interviews. METHODS Vignette descriptions of health states defined by the extent of hair loss were developed (as well as one describing caregiver burden). These were developed using data from standardised patient reported outcome (PRO) measures, a literature review and qualitative interviews. Health states were defined based on the severity of alopecia tool (SALT), which assesses extensiveness of scalp hair loss. HSUVs were then elicited for each health state in TTO interviews with the UK public. RESULTS One caregiver and five patient health states were developed based on the literature review findings, clinical trial PRO (Hospital Anxiety and Depression Scale and Alopecia Areata Patient Priority Outcomes Questionnaire) data and qualitative interviews with patients (N = 11), clinical experts (N = 4) and caregivers of adolescents with AA (N = 10). These data showed a more severe impact among patients with more extensive hair loss. One hundred and twenty participants evaluated the vignettes in TTO interviews. Patient HSUVs ranged from 0.502 for the most extensive hair loss health state (SALT 50-100 + eyebrow and eyelash loss) to 0.919 (SALT 0-10) for the mildest health state. The caregiver HSUV was 0.882. CONCLUSION Quantitative and qualitative data sources were used to develop and validate vignettes describing different AA health states. Patient and caregiver HSUVs demonstrate a large impact associated with AA, especially for states defined by more extensive hair loss.
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Affiliation(s)
- Daniel Aggio
- Acaster Lloyd Consulting Ltd, 8th Floor, Lacon House, 84 Theobalds Road, London, WC1X 8NL, UK.
| | - Caleb Dixon
- Acaster Lloyd Consulting Ltd, 8th Floor, Lacon House, 84 Theobalds Road, London, WC1X 8NL, UK
| | | | | | | | - Andrew Lloyd
- Acaster Lloyd Consulting Ltd, 8th Floor, Lacon House, 84 Theobalds Road, London, WC1X 8NL, UK
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Zhang A, Mao Z, Wang Z, Wu J, Luo N, Wang P. Comparing measurement properties of EQ-5D and SF-6D in East and South-East Asian populations: a scoping review. Expert Rev Pharmacoecon Outcomes Res 2023; 23:449-468. [PMID: 36889006 DOI: 10.1080/14737167.2023.2189590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023]
Abstract
INTRODUCTION Euro-Qol-5 Dimension (EQ-5D) and Short-Form 6-Dimension (SF-6D) are the most commonly used generic multi-attribute utility instruments (MAUI) to calculate quality-adjusted life-years (QALYs) in East and South-East Asia. This study aims to systematically review and summarize current evidence on comparing measurement properties of EQ-5D and SF-6D in East and South-East Asian populations. AREAS COVERED Guided by the PRISMA systematic review and meta-analysis guidelines, a systematic literature search was conducted in databases of PubMed, Web of Science, MEDLINE, EMBASE and CINAHL (until June 2022) to obtain studies which compared measurement properties (feasibility, reliability, validity, responsiveness, and sensitivity) and agreement of EQ-5D and SF-6D in the populations. EXPERT OPINION In general, both EQ-5D and SF-6D had good measurement properties in East and South-East Asian populations; but their utility scores cannot be used interchangeably. Compared to the 3-level EQ-5D, SF-6D had better sensitivity and lower ceiling effects, but the comparison results between the 5-level EQ-5D and SF-6D were inconsistent across populations. This scoping review found that most studies did not consider order effects, did not specify the versions of SF-6D, and ignored certain measurement properties (reliability, content validity, and responsiveness). These aspects need to be further explored in future studies.
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Affiliation(s)
- Aixue Zhang
- School of Public Health, Fudan University, Shanghai, Hong Kong, China.,KeyLaboratory of Health Technology Assessment, National Health Commission of the People's Republic of China (Fudan University), Shanghai, Hong Kong, China
| | - Zhuxin Mao
- Centre for Health Economics Research and Modelling Infectious Diseases (CHERMID), University of Antwerp, Antwerp, Belgium
| | - Zitong Wang
- School of Public Health, Fudan University, Shanghai, Hong Kong, China
| | - Jing Wu
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, Beijing, China
| | - Nan Luo
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore
| | - Pei Wang
- School of Public Health, Fudan University, Shanghai, Hong Kong, China.,KeyLaboratory of Health Technology Assessment, National Health Commission of the People's Republic of China (Fudan University), Shanghai, Hong Kong, China
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Muchadeyi MT, Hernandez-Villafuerte K, Schlander M. Quality appraisal for systematic literature reviews of health state utility values: a descriptive analysis. BMC Med Res Methodol 2022; 22:303. [PMID: 36434521 PMCID: PMC9700894 DOI: 10.1186/s12874-022-01784-6] [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] [Received: 04/24/2022] [Accepted: 11/04/2022] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Health state utility values (HSUVs) are an essential input parameter to cost-utility analysis (CUA). Systematic literature reviews (SLRs) provide summarized information for selecting utility values from an increasing number of primary studies eliciting HSUVs. Quality appraisal (QA) of such SLRs is an important process towards the credibility of HSUVs estimates; yet, authors often overlook this crucial process. A scientifically developed and widely accepted QA tool for this purpose is lacking and warranted. OBJECTIVES To comprehensively describe the nature of QA in published SRLs of studies eliciting HSUVs and generate a list of commonly used items. METHODS A comprehensive literature search was conducted in PubMed and Embase from 01.01.2015 to 15.05.2021. SLRs of empirical studies eliciting HSUVs that were published in English were included. We extracted descriptive data, which included QA tools checklists or good practice recommendations used or cited, items used, and the methods of incorporating QA results into study findings. Descriptive statistics (frequencies of use and occurrences of items, acceptance and counterfactual acceptance rates) were computed and a comprehensive list of QA items was generated. RESULTS A total of 73 SLRs were included, comprising 93 items and 35 QA tools and good recommendation practices. The prevalence of QA was 55% (40/73). Recommendations by NICE and ISPOR guidelines appeared in 42% (16/40) of the SLRs that appraised quality. The most commonly used QA items in SLRs were response rates (27/40), statistical analysis (22/40), sample size (21/40) and loss of follow up (21/40). Yet, the most commonly featured items in QA tools and GPRs were statistical analysis (23/35), confounding or baseline equivalency (20/35), and blinding (14/35). Only 5% of the SLRS used QA to inform the data analysis, with acceptance rates of 100% (in two studies) 67%, 53% and 33%. The mean counterfactual acceptance rate was 55% (median 53% and IQR 56%). CONCLUSIONS There is a considerably low prevalence of QA in the SLRs of HSUVs. Also, there is a wide variation in the QA dimensions and items included in both SLRs and extracted tools. This underscores the need for a scientifically developed QA tool for multi-variable primary studies of HSUVs.
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Affiliation(s)
- Muchandifunga Trust Muchadeyi
- grid.7497.d0000 0004 0492 0584Division of Health Economics, German Cancer Research Center (DKFZ), Foundation Under Public Law, Im Neuenheimer Feld 280, 69120 Heidelberg, Germany ,grid.7700.00000 0001 2190 4373Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Karla Hernandez-Villafuerte
- grid.7497.d0000 0004 0492 0584Division of Health Economics, German Cancer Research Center (DKFZ), Foundation Under Public Law, Im Neuenheimer Feld 280, 69120 Heidelberg, Germany ,Health Economics, WifOR institute, Rheinstraße 22, Darmstadt, 64283 Germany
| | - Michael Schlander
- grid.7497.d0000 0004 0492 0584Division of Health Economics, German Cancer Research Center (DKFZ), Foundation Under Public Law, Im Neuenheimer Feld 280, 69120 Heidelberg, Germany ,grid.7700.00000 0001 2190 4373Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany ,grid.7700.00000 0001 2190 4373Alfred Weber Institute for Economics (AWI), University of Heidelberg, Heidelberg, Germany
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Igarashi A, Yuasa A, Yonemoto N, Kamei K, LoPresti M, Murofushi T, Ikeda S. A Systematic Literature Review of Economic Evaluations and Cost Studies of the Treatment of Psoriasis, Atopic Dermatitis, and Chronic Urticaria. Dermatol Ther (Heidelb) 2022; 12:1729-1751. [PMID: 35909186 PMCID: PMC9357586 DOI: 10.1007/s13555-022-00774-2] [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] [Received: 05/06/2022] [Accepted: 07/07/2022] [Indexed: 11/21/2022] Open
Abstract
Introduction Psoriasis (PSO), atopic dermatitis (AD), and chronic urticaria (CU) are common manifestations of immunological skin and subcutaneous conditions and have been shown to have a substantial impact on the quality of life of patients. The cost of treating those conditions can also be high, as the use of biologic treatments has become more common for moderate to severe patients. In this review, we examine characteristics of economic evaluations and cost studies conducted for the three conditions. Methods A literature search was conducted using PubMed, Embase, and the Cochrane Library from January 1, 2016 to October 26, 2020 to identify economic evaluations where the cost of one or more drug treatment was evaluated and cost studies covering any intervention type. Each database was searched using keyword and MeSH terms related to treatment costs (e.g., health care cost, drug cost, etc.) and each condition (e.g., PSO, AD, eczema, CU, etc.). Results A total of 123 studies were reviewed, including 104 studies (85%) of PSO (including psoriasis, plaque psoriasis, psoriatic arthritis, and psoriasis vulgaris), 14 studies (11%) of AD, and 5 studies (4%) of CU. Seventy-two studies (59%) reviewed reported the inclusion of biologic treatments, 10 studies (8%) did not include biologic treatments, and 41 studies (33%) did not report whether or not a biologic treatment was included. While nearly all studies (98%) included direct costs, only 22 studies (18%) included indirect costs. Conclusions Economic evaluations for AD and CU may be needed in order to better understand the value of new treatments. Moreover, a clearer delineation for biologic treatments and indirect costs (i.e., productivity losses and gains) may be required. Supplementary Information The online version contains supplementary material available at 10.1007/s13555-022-00774-2.
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Affiliation(s)
| | - Akira Yuasa
- Pfizer Japan Inc., Shinjuku Bunka Quint Building, 3-22-7, Yoyogi, Shibuya-ku, Tokyo, 151-8589, Japan.
| | - Naohiro Yonemoto
- Pfizer Japan Inc., Shinjuku Bunka Quint Building, 3-22-7, Yoyogi, Shibuya-ku, Tokyo, 151-8589, Japan
| | - Kazumasa Kamei
- Pfizer Japan Inc., Shinjuku Bunka Quint Building, 3-22-7, Yoyogi, Shibuya-ku, Tokyo, 151-8589, Japan
| | | | | | - Shunya Ikeda
- Department of Public Health, School of Medicine, International University of Health and Welfare, Narita, Japan
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