scholarly journals Mapping to Quality of Life and Capability Measures in Cataract Surgery Patients: From Cat-PROM5 to EQ-5D-3L, EQ-5D-5L, and ICECAP-O Using Mixture Modelling

2020 ◽  
Vol 5 (1) ◽  
pp. 238146832091544
Author(s):  
Padraig Dixon ◽  
William Hollingworth ◽  
John Sparrow
Keyword(s):  
Quality Of Life ◽  
Cataract Surgery ◽  
Mixture Models ◽  
Linear Models ◽  
Outcome Measure ◽  
Performance Criteria ◽  
Limited Dependent Variable ◽  
Patient Reported ◽  
Support Cost

Objectives. Cataract is a prevalent and potentially blinding eye condition. Cataract surgery, the only proven treatment for this condition, is a very frequently undertaken procedure. The objective of this analysis was to develop a mapping algorithm that could be used to predict quality of life and capability scores from the Cat-PROM5, a newly developed, validated patient-reported outcome measure for patients undergoing cataract surgery. Methods. We estimated linear models and adjusted limited dependent variable mixture models. Data were taken from the Predict-CAT cohort of up to 1181 patients undergoing cataract surgery at two sites in England. The Cat-PROM5 was mapped to two quality of life measures (EQ-5D-3L and EQ-5D-5L) and one capability measure (ICECAP-O). All patients reported ICECAP-O and one or other of the EQ-5D measures both before and after cataract surgery. Model performance was assessed using likelihood statistics, graphical inspections of model fit, and error measurements. Results. Adjusted limited dependent variable mixture models dominated linear models on all performance criteria. Mixture models offered very good fit. Three component models that allowed component membership to be a function of covariates (age, sex, and diabetic status depending on specification and outcome measure) and which conditioned on covariates offered the best performance in almost all cases. An exception was the EQ-5D-5L post-surgery for which a two-component model was selected. Conclusions. Mapping from Cat-PROM5 to quality of life and capability measures using adjusted limited dependent variable mixture models is feasible, and the estimates can be used to support cost-effectiveness analysis in relation to cataract care. Mixture models performed strongly for both quality of life outcomes and capability outcomes.

Evaluation of Ankylosing Spondylitis Quality of Life (EASi-QoL): Reliability and Validity of a New Patient-reported Outcome Measure

2010 ◽  
Vol 37 (10) ◽  
pp. 2100-2109 ◽  
Author(s):  
KIRSTIE L. HAYWOOD ◽  
ANDREW M. GARRATT ◽  
KELVIN P. JORDAN ◽  
EMMA L. HEALEY ◽  
JONATHAN C. PACKHAM
Keyword(s):  
Quality Of Life ◽  
Ankylosing Spondylitis ◽  
Outcome Measure ◽  
Patient Reported Outcome ◽  
Postal Survey ◽  
Patient Reported Outcome Measure ◽  
Patient Interviews ◽  
Patient Reported ◽  
Test Retest Reliability

Objective.There is currently no universally accepted measure of quality of life in ankylosing spondylitis (AS). Our objective was to develop and evaluate a patient-reported outcome measure of quality of life in AS, EASi-QoL.Methods.We used patient interviews, a literature review, and completion of an individualized measure of AS quality of life during clinic-based and pilot surveys to derive questionnaire content. Classical and modern psychometrics were then used to evaluate the questionnaire using data from a large UK-based postal survey of 1000 patients with AS.Results.Data analysis from the interviews and clinic-based and postal surveys produced a 57-item self-completed questionnaire. Fifteen items were removed as a result of patient interviews and the pilot survey. In total, 612 (64.0%) patients responded to the main postal survey. After assessment of data quality, confirmatory factor analysis, and Rasch analysis, 20 items were found to contribute to 4 domains of AS-related quality of life: physical function, disease activity, emotional well-being, and social participation. Item-total correlations ranged from 0.66 to 0.84. Cronbach’s alpha and test-retest reliability estimates were 0.88–0.92 and 0.88–0.93, respectively. Confirmed hypothesized correlations with the AS Quality of Life questionnaire, the Bath AS Disease Activity Index, Bath AS Functional Index, SF-36, EQ-5D, and the Hospital Anxiety and Depression Scale were evidence for the construct validity of the EASi-QoL.Conclusion.The EASi-QoL has good evidence of data quality, internal reliability, test-retest reliability, and content and construct validity, and should be considered for use with patients in routine practice settings and in evaluative studies including clinical trials. Measurement responsiveness and minimal important change are currently being assessed.

Association of Touch Avoidance with Disease Severity and Quality of Life in Psoriasis Patients

2017 ◽  
Vol 2 (3) ◽  
pp. 57-63 ◽  
Author(s):  
April W. Armstrong ◽  
Jennifer C. Cather ◽  
Carle F. Paul ◽  
Emily Edson-Heredia ◽  
Baojin Zhu ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Disease Severity ◽  
Linear Models ◽  
Logistic Models ◽  
Patient Reported Outcome Measures ◽  
Cross Sectional ◽  
Patient Reported ◽  
Touch Avoidance ◽  
The Impact

Background and Objective Previous large studies have highlighted the impact of psoriasis on health-related quality of life (HRQoL) but not on interpersonal touch. This survey assessed the prevalence of touch avoidance among psoriasis patients, and its relationship to clinical characteristics and HRQoL. Methods Using an online, cross-sectional study with a standardized questionnaire, psoriasis patients reported their level of touch avoidance. The relationships between touch avoidance, patient-reported outcome measures, and patient demographics were analyzed using linear models for continuous outcomes and logistic models for categorical outcomes. Results Touch avoidance was reported by 48.2% of participants. Higher levels of touch avoidance were associated with worse HRQoL, depression, and itch outcomes (p<.001 for all). The strongest indicators of touch avoidance were HRQoL score (p<.001) and depression score (p<.001). Conclusion Nearly half of psoriasis patients report avoidance of touch. Those who had worse disease severity, HRQoL, and depression reported higher levels of touch avoidance.

scholarly journals Is the RAND-36 an Adequate Patient-reported Outcome Measure to Assess Health-related Quality of Life in Patients Undergoing Bariatric Surgery?

2021 ◽  
Author(s):  
Claire E. E. de Vries ◽  
Dennis J. S. Makarawung ◽  
Valerie M. Monpellier ◽  
Ignace M. C. Janssen ◽  
Steve M. M. de Castro ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Bariatric Surgery ◽  
Outcome Measure ◽  
Patient Reported Outcome ◽  
Health Related Quality ◽  
Patient Reported Outcome Measure ◽  
Patient Reported ◽  
Related Quality ◽  
Health Related

Abstract Purpose The RAND-36 is the most frequently used patient-reported outcome measure (PROM) to evaluate health-related quality of life (HRQoL) in bariatric surgery. However, the RAND-36 has never been adequately validated in bariatric surgery. The purpose of this study was to validate the RAND-36 in Dutch patients undergoing bariatric surgery. Material and Methods To validate the RAND-36, the following measurement properties were assessed in bariatric surgery patients: validity (the degree to which the RAND-36 measures what it purports to measure (HRQoL)), reliability (the extent to which the scores of the RAND-36 are the same for repeated measurement for patients who have not changed in HRQoL), responsiveness (the ability of the RAND-36 to detect changes in HRQoL over time). Results Two thousand one hundred thirty-seven patients were included. Validity was not adequate due to the irrelevance of some items and response options, the lack of items relevant to patients undergoing bariatric surgery, and the RAND-36 did not actually measure what it was intended to measure in this study (HRQoL in bariatric surgery patients). Reliability was insufficient for the majority of the scales (the scores of patients who had not changed in HRQoL were different when the RAND was completed a second time (intraclass correlation coefficient (ICC) values 0.10–0.69)). Responsiveness was insufficient. Conclusion The RAND-36 was not supported by sufficient validation evidence in patients undergoing bariatric surgery, which means that the RAND-36 does not adequately measure HRQoL in this patient population. Future research studies should use PROMs that are specifically designed for assessing HRQoL in patients undergoing bariatric surgery. Graphical abstract

OP28 Patient Involvement at AQuAS: Experiences And Reflections For Future

2019 ◽  
Vol 35 (S1) ◽  
pp. 6-6
Author(s):  
Lina Masana ◽  
Emmanuel Gimenez Garcia ◽  
Mireia Espallargues
Keyword(s):  
Quality Of Life ◽  
Focus Group ◽  
Cataract Surgery ◽  
Patient Involvement ◽  
Assessment Tool ◽  
Economic Evaluations ◽  
Self Assessment ◽  
Maxillofacial Reconstruction ◽  
Patient Reported

IntroductionAQuAS is gradually incorporating patient involvement in health technology assessment (HTA). We present two experiences conducted during 2018 and the different methods and approaches used. The aim is to reflect on learnings from those experiences to improve ways for increasing patient involvement with HTA at AQuAS.MethodsWe conducted two experiences using different quantitative and qualitative techniques (mix-methods approach). The first, a focus group discussion regarding the use of 3D-technologies for maxillofacial reconstruction with a selection of hospital patients that received maxillofacial reconstruction, which included the use of a quality-of-life retrospective self-assessment tool. The second, a sequence of email correspondence regarding cataract surgery technology (femtosecond laser-assisted cataract surgery (FLACS), in the context of an EUnetHTA Joint Assessment) with a patients’ association representative, to learn their opinion regarding the use of laser technology.ResultsMain learnings were: (1) patients and associations have different levels of knowledge and expertise to consider when planning an HTA; (2) sharing experience and knowledge among peers (i.e. focus group) proved to have a positive impact on patients and worked as a resource for some to improve knowledge on their condition; (3) critiques were received regarding a specific Patient Reported Experience template for HTA patient involvement (iv) quality of life retrospective self-assessment tool provided unexpected positive and negative results.ConclusionsRecent patient involvement in HTA at AQuAS proved to be useful to complement HTA reports. We believe that patients’ experiences and opinions can help decision-making regarding the use, disinvestment or incorporation of health technologies, contribute to the improvement of tools and survey accuracy and improve doctor-patient communication. Their involvement might be beneficial for them to gain more knowledge, share experiences, reflect on their health situation and improve communication with the professionals that treat them. Future patient-involvement in HTA is needed, e.g. considering the social perspective in economic evaluations or including patients in recommendation consensus panels.

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