scholarly journals Test�Retest Reliability and Clinical and Research Validity of the �Quality of Life Impact and Concerns� (QoLI&C) Measure

2021 ◽  
Vol Volume 12 ◽  
pp. 77-81
Author(s):  
Tina S Gambling ◽  
Andrew F Long
Keyword(s):  
Quality Of Life ◽  
Retest Reliability ◽  
Life Impact ◽  
Test Retest Reliability

scholarly journals The Quality of Life Impact Refractive Correction (QIRC) questionnaire: validation of the Malay-translated version of the QIRC using Rasch analysis

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Md Mustafa Md-Muziman-Syah ◽  
Nur Solehah Muzir ◽  
Haliza Abdul Mutalib ◽  
Noorhazayti Ab. Halim
Keyword(s):  
Quality Of Life ◽  
Rasch Analysis ◽  
Intraclass Correlation ◽  
Functional Scale ◽  
Retest Reliability ◽  
Culturally Adapted ◽  
Life Impact ◽  
Refractive Correction ◽  
Test Retest Reliability

Abstract Background The Quality of Life Impact Refractive Correction (QIRC) questionnaire is a Rasch-validated instrument to assess the quality of life of ametropes with refractive correction. The original QIRC was validated in the United Kingdom. This study aimed to validate the Malay version of the QIRC among refractive correction wearers in Malaysia using Rasch analysis. Methods The original 20-item QIRC was forward-backward translated into Malay in preparation for the Pilot Malay QIRC. The pilot version was pre-tested on 105 spectacle/contact lens-corrected myopes, and the results were reviewed and cross-culturally adapted to produce the Final Malay QIRC. The final version was self-administered to a new sample of 304 participants. A Rasch analysis was conducted to evaluate the items and response categories of the Pilot and the Final Malay QIRC. Test-retest reliability was also analysed on the Final Malay QIRC. Results Based on the pre-test findings, Rasch analysis revealed a multidimensional scale (functional scale [Items 1 to 13] and emotional scale [Items 14 to 20], which were separated in subsequent analysis), unordered response categories for the functional scale (Category 3 was collapsed into Category 2), one misfit item (Item 3 was removed) and six items required modification (Items 4, 6 to 9, and 12 were reworded and cross-culturally adapted). In the Final Malay QIRC, both the functional and emotional scales had ordered response categories, good person reliability (functional, 0.80; emotional, 0.81) and separation index (functional, 2.01; emotional, 2.06), well-targeted items (targeting precision: functional, 0.28 logits; emotional, 0.08 logits), and satisfactory fit statistics (infit and outfit mean square were less than 1.50 for all items). A noticeable differential item functioning (DIF) between genders was found in Item 18 (DIF contrast, 0.40 logits; p = 0.04). Test-retest reliability analysis demonstrated a high intraclass correlation coefficient (0.94) and Cronbach’s alpha (0.97) with a coefficient of repeatability of ±8.14 units. Conclusions The Malay-translated version of the QIRC has good psychometric characteristics for assessing the quality of life of refractive correction wearers in Malaysia. This translated and cross-culturally adapted Malay QIRC is a valid and reliable instrument that can be used in routine clinical practice.

scholarly journals Test–retest reliability of the Food Allergy Quality of Life Questionnaires (FAQLQ) for children, adolescents and adults

2009 ◽  
Vol 18 (2) ◽  
pp. 245-251 ◽  
Author(s):  
Jantina L. van der Velde ◽  
Bertine M. J. Flokstra-de Blok ◽  
Berber J. Vlieg-Boerstra ◽  
Joanne N. G. Oude Elberink ◽  
Jan P. Schouten ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Food Allergy ◽  
Retest Reliability ◽  
Quality Of Life Questionnaires ◽  
Adolescents And Adults ◽  
Test Retest Reliability

scholarly journals Psychometric Validation of the German Translation of the Quality of Life Questionnaire-Bronchiectasis (QOL-B)—Data from the German Bronchiectasis Registry PROGNOSIS

2022 ◽  
Vol 11 (2) ◽  
pp. 441
Author(s):  
Laura Quellhorst ◽  
Grit Barten-Neiner ◽  
Andrés de Roux ◽  
Roland Diel ◽  
Pontus Mertsch ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Social Functioning ◽  
Emotional Functioning ◽  
Psychometric Validation ◽  
Life Questionnaire ◽  
Retest Reliability ◽  
German Translation ◽  
Quality Of Life Questionnaire ◽  
Test Retest Reliability

Patients with bronchiectasis feature considerable symptom burden and reduced health-related quality of life (QOL). We provide the psychometric validation of the German translation of the disease-specific Quality of Life Questionnaire-Bronchiectasis (QOL-B), version 3.1, using baseline data of adults consecutively enrolled into the prospective German bronchiectasis registry PROGNOSIS. Overall, 904 patients with evaluable QOL-B scores were included. We observed no relevant floor or ceiling effects. Internal consistency was good to excellent (Cronbach’s α ≥0.73 for each scale). QOL-B scales discriminated between patients based on prior pulmonary exacerbations and hospitalizations, breathlessness, bronchiectasis severity index, lung function, sputum volume, Pseudomonas aeruginosa status and the need for regular pharmacotherapy, except for Social Functioning, Vitality and Emotional Functioning scales. We observed moderate to strong convergence between several measures of disease severity and QOL-B scales, except for Social and Emotional Functioning. Two-week test-retest reliability was good, with intraclass correlation coefficients ≥0.84 for each scale. Minimal clinical important difference ranged between 8.5 for the Respiratory Symptoms and 14.1 points for the Social Functioning scale. Overall, the German translation of the QOL-B, version 3.1, has good validity and test-retest reliability among a nationally representative adult bronchiectasis cohort. However, responsiveness of QOL-B scales require further investigation during registry follow-up.

Test/retest study of the European Organization for Research and Treatment of Cancer Core Quality-of-Life Questionnaire.

1995 ◽  
Vol 13 (5) ◽  
pp. 1249-1254 ◽  
Author(s):  
M J Hjermstad ◽  
S D Fossa ◽  
K Bjordal ◽  
S Kaasa
Keyword(s):  
Quality Of Life ◽  
Cancer Patients ◽  
Reliability And Validity ◽  
Life Questionnaire ◽  
European Organization ◽  
Retest Reliability ◽  
Eortc Qlq C30 ◽  
Eortc Qlq ◽  
Test Retest Reliability

PURPOSE The European Organization for Research and Treatment of Cancer Core Quality of Life Questionnaire (EORTC QLQ-C30) is a well-validated instrument that assesses health-related quality of life (HRQOL) in cancer patients. It is used in cancer clinical trials in Europe, Canada, and the United States, and has demonstrated high reliability and validity in different groups of cancer patients. Despite thorough testing of reliability and validity, we have not identified any reports on its test/retest reliability; thus, a test/retest study was performed at the Norwegian Radium Hospital (NRH). MATERIALS AND METHODS Cancer patients from the outpatient clinic who were off treatment for > or = 3 months were eligible for the study. The EORTC QLQ-C30 was given to the patients when they presented for their visit. The second questionnaire was received by the patients 4 days later. Of 291 eligible patients, 270 (93%) agreed to participate and 190 (73%) completed both questionnaires. RESULTS The test/retest reliability measured by Pearson's correlation coefficient was high for all functional scales, with a range from .82 for cognitive and role function to .91 for physical function. The r value for global HRQOL was .85. For the symptom scales--nausea/vomiting, fatigue, and pain--the coefficients were .63, .83, and .86, respectively. The single-item coefficients ranged from .72 for diarrhea to .84 for financial impact. The Spearman rank correlation was in the same range for all dimensions. CONCLUSION The EORTC QLQ-C30 seems to yield high test/retest reliability in patients with various cancer diagnoses whose condition is not expected to change during the time of measurement.

scholarly journals Validity and Reliability of Brief International Cognitive Assessment for Multiple Sclerosis (BICAMS) in Indonesia and the Correlation with Quality of Life

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Riwanti Estiasari ◽  
Yuhyi Fajrina ◽  
Diatri Nari Lastri ◽  
Syarli Melani ◽  
Kartika Maharani ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Multiple Sclerosis ◽  
Cognitive Impairment ◽  
Cognitive Function ◽  
Cognitive Assessment ◽  
Verbal Learning ◽  
Retest Reliability ◽  
Cognitive Evaluation ◽  
Test Retest Reliability

Introduction. Multiple Sclerosis (MS) can affect cognitive function that might interfere with quality of life. Processing speed and memory are the most common area of cognitive impairment. Cognitive evaluation in daily practice is often difficult to be performed since it needs neuropsychological expert and is time-consuming. Brief International Cognitive Assessment for MS (BICAMS) is valid and practical for cognitive evaluation. This study aims to validate BICAMS in Indonesian MS patients and healthy controls (HC) and to analyse the effect of cognitive impairment on quality of life. Methods. BICAMS, which composes Symbol Digits Modalities Test (SDMT), California Verbal Learning Test-Second Edition (CVLT-II), and Brief Visuospatial Memory Test-Revised (BVMT-R), was translated and cross-culturally adapted to Indonesian from the original BICAMS and then administered to 40 Indonesian MS patients and 66 HC matched by sex, age, and education. Test-retest reliability was performed on 16-MS patients and 42 HC. Quality of life was measured using Multiple Sclerosis Quality of Life (MSQOL-54) instrument. Results. The SDMT, CVLT-II, and BVMT-R score in MS patients were significantly lower than those in HC (effect size, r: 0.61, 0.36, and 0.47, respectively). Test-retest reliability for all tests was satisfactory with correlation coefficient for SDMT, CVLT-II, and BVMT-R in MS subjects 0.86, 0.81, and 0.83, respectively. Using 5th percentile of HC score as cut-off, 15% MS subjects had impairment in one test, 27.5% in two tests, and 40% in three tests. BICAMS was moderately correlated with EDSS but was not correlated with disease duration and relapse rate. SDMT score correlated with physical function and physical and mental role limitation. Conclusion. BICAMS is valid and reliable for assessing cognitive function of Indonesia MS patients.

Test–retest reliability of the Swedish version of the Orthotics and Prosthetics Users’ Survey

2013 ◽  
Vol 38 (1) ◽  
pp. 21-26 ◽  
Author(s):  
Gustav Jarl ◽  
Marie Holmefur ◽  
Liselotte MN Hermansson
Keyword(s):  
Quality Of Life ◽  
Functional Status ◽  
Client Satisfaction ◽  
Correlation Coefficients ◽  
Health Related Quality ◽  
Retest Reliability ◽  
Related Quality ◽  
Health Related ◽  
Test Retest Reliability

Background:The Orthotics and Prosthetics Users’ Survey consists of five modules to assess outcomes of orthotic and prosthetic interventions: lower extremity functional status, upper extremity functional status, client satisfaction with device, client satisfaction with services and health-related quality of life.Objectives:To investigate the test–retest reliability and calculate the smallest detectable difference for all modules of the Swedish Orthotics and Prosthetics Users’ Survey.Study design:Test–retest reliability study design.Methods:A total of 69 patients at a Department of Prosthetics and Orthotics completed Orthotics and Prosthetics Users’ Survey on two occasions separated by a 2-week interval, giving 18 answers on lower extremity functional status, 41 on upper extremity functional status, 53 on client satisfaction with device, 12 on client satisfaction with services and 67 answers on health-related quality of life. Raw scores were converted into Orthotics and Prosthetics Users’ Survey units on a 0–100 scale. Intra-class correlation coefficients, Bland–Altman plots, common person linking plots and t-tests of person mean measures were used to investigate the reliability. The 95% confidence level smallest detectable differences were calculated.Results:The intra-class correlation coefficients ranged from 0.77 to 0.96 for the modules, and no systematic differences were detected between the response occasions. The smallest detectable differences ranged from 7.4 to 16.6 units.Conclusions:The test–retest reliability was satisfactory for all Orthotics and Prosthetics Users’ Survey modules. The smallest detectable difference was large on all modules except the health-related quality of life module.Clinical relevanceThe Orthotics and Prosthetics Users’ Survey modules are reliable and, thus, can be recommended for repeated measurements of patients over time. Relatively large changes are needed to achieve statistical significance when assessing individual patients.

Quality of life of the mentally ill. Reliability of the Swedish version of the Lancashire Quality of Life profile

1998 ◽  
Vol 13 (5) ◽  
pp. 231-234 ◽  
Author(s):  
L Hansson ◽  
B Svensson ◽  
T Björkman
Keyword(s):  
Quality Of Life ◽  
Internal Consistency ◽  
Social Relations ◽  
Mentally Ill ◽  
Well Being ◽  
Swedish Version ◽  
Cross Sectional ◽  
Retest Reliability ◽  
Test Retest Reliability

SummaryThere has been a growing interest in the quality of life (QoL) of the mentally ill, subsequently a number of instruments to measure QoL have been developed. One of the measures of QoL which has received considerable attention is the Lancashire QoL Profile (LQOLP). The present study investigated test-retest reliability and internal consistency in the Swedish translation of the LQOLP using a cross-sectional sample of 29 inpatients. The results showed that test-retest reliability of subjective life satisfaction in the nine life domains covered by the LQOLP was satisfactory in seven of the domains, and acceptable in two (social relations and religion). Test-retest reliability for total subjective satisfaction score, global well-being, and an interviewer rated QoL were all on a satisfactory level (r > 0.80). The internal consistency and homogeneity of the total subjective QoL scale and the nine life domain subscales was satisfactory except for the social relations scale, where it was somewhat low.

Measuring Patient-Reported Health-Related Quality of Life in Velopharyngeal Insufficiency: Reliability and Validity of the Brazilian Portuguese Version of the VELO Instrument

2019 ◽  
Vol 56 (9) ◽  
pp. 1195-1205 ◽  
Author(s):  
Rafael Denadai ◽  
Cassio Eduardo Raposo-Amaral ◽  
Anelise Sabbag ◽  
Rafael Andrade Ribeiro ◽  
Celso Luiz Buzzo ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Construct Validity ◽  
Internal Consistency ◽  
Reliability And Validity ◽  
Brazilian Portuguese ◽  
Velopharyngeal Insufficiency ◽  
Retest Reliability ◽  
Related Quality ◽  
Test Retest Reliability

Objective: To test the Brazilian Portuguese velopharyngeal insufficiency (VPI) Effects on Life Outcome (VELO) instrument for reliability and validity. Design: Cross-sectional methodological study. Setting: Tertiary craniofacial medical center. Participants: Participants with VPI (VPI group, n = 60), with cleft and without VPI (no VPI/cleft group, n = 60), and with no cleft nor VPI (no VPI/no cleft group, n = 60) and their parents (n = 180). Interventions: All patients with VPI 8+ years old and their parents completed the Brazilian–Portuguese VELO instrument and other questionnaires (Pediatric Quality of Life Inventory4.0, PedsQL4.0; Pediatric Voice-Related Quality of Life, PVRQOL; and Intelligibility in Context Scale, ICS) at baseline; patients with VPI and their parents completed the VELO instrument again 2 weeks later. Main Outcome Measures: The VELO instrument was tested for internal consistency, test–retest reliability, discriminant validity (participants with VPI against participants with no VPI), concurrent validity against other questionnaires, criterion validity against hypernasality severity, and construct validity against nasal air emission and overall velopharyngeal competence (speech construct) and velopharyngeal gap (anatomic construct). Results: The VELO had excellent internal consistency (Cronbach α 0.99 for parents and 0.98 for participants with VPI) and test–retest reliability (all intraclass correlation coefficient > 0.87). The VELO discriminated well between VPI group and unaffected groups (all P < .05). The VELO was significantly correlated with the PedsQL4.0, PVRQOL, and ICS (– r > 0.75; P < .001). The VELO met criterion validity, speech construct validity, and anatomic construct validity ( r > 0.7; P < .001). Conclusions: The Brazilian-Portuguese VELO instrument demonstrated reliability (internal consistency and test–retest) and validity (discriminant, concurrent, criterion, and construct).

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