scholarly journals Psychometric Properties and Factor Analysis of the Engagement and Independence in Dementia Questionnaire (EID-Q)

2018 ◽  
Vol 46 (3-4) ◽  
pp. 119-127 ◽  
Author(s):  
Charlotte R. Stoner ◽  
Martin Orrell ◽  
Aimee Spector
Keyword(s):  
Quality Of Life ◽  
Factor Analysis ◽  
Psychometric Properties ◽  
Internal Consistency ◽  
Social Engagement ◽  
Convergent Validity ◽  
Factor Solution ◽  
Adequate Model ◽  
People With Dementia

Background/Aims: Independence and social engagement are important outcomes for people with dementia. The aim of this study was to conduct an in-depth psychometric assessment of the Engagement and Independence in Dementia Questionnaire (EID-Q), a measure of social independence. Methods: This was an observational study at five NHS sites across England. Participants completed the EID-Q alongside additional measures. Psychometric analysis included internal consistency, test-retest reliability, convergent validity, and factor analyses. Results: A total of 225 people living with dementia completed the study. Internal consistency was excellent (α = 0.921) and the measure remained moderately stable over a 1-week period (ICC = 0.768). Significant correlations were observed between quality of life (r = 0.682) and depression (r = –0.741; both p < 0.001), indicating the importance of these concepts for wellbeing in dementia. Factor analysis indicated the presence of five factors which loaded onto a second order two-factor solution. These latent factors were named “sense of independence” and “social engagement.” Conclusions: The EID-Q demonstrated acceptable psychometric properties and the factor solution had an adequate model fit. The strong correlations suggest that social independence is strongly related to depression and quality of life. Future work will entail an analysis of responsiveness to intervention and further large-scale work.

scholarly journals Health-related quality of life in Iranian adolescents: a psychometric evaluation of the self-report form of the PedsQL 4.0 and an investigation of gender and age differences

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Habib Hadianfard ◽  
Behnaz Kiani ◽  
Mahla Azizzadeh Herozi ◽  
Fatemeh Mohajelin ◽  
John T. Mitchell
Keyword(s):  
Quality Of Life ◽  
Psychometric Properties ◽  
Internal Consistency ◽  
Convergent Validity ◽  
Age Effects ◽  
Self Report ◽  
Gender And Age ◽  
Pedsql 4.0 ◽  
Test Retest Reliability

Abstract Background Research on the psychometric properties of the Persian self-report form of the Pediatric Quality of Life Inventory Version 4.0 (PedsQL 4.0) in adolescents has several gaps (e.g., convergent validity) that limit its clinical application and therefore the cross-cultural impact of this measure. This study aimed at investigating the psychometric properties of the PedsQL 4.0 and the effects of gender and age on quality of life in Iranian adolescents. Method The PedsQL 4.0 was administered to 326 adolescents (12–17 years). A subsample of 115 adolescents completed the scale two weeks after the first assessment. Confirmatory Factor Analysis (CFA), correlation of the PedsQL 4.0 with the Weiss Functional Impairment Rating Scale-Self-report (WFIRS-S), and Item Response Theory (IRT) analysis were conducted to examine validity. Cronbach’s alpha, McDonald’s Omega, and Intra class correlation (ICC) were calculated as well to examine reliability. Gender and age effects were also evaluated. Results Internal consistency and test–retest reliability of the total PedsQL 4.0 scale was .92 and .87, respectively. The PedsQL 4.0 scores showed negative moderate to strong correlations with the WFIRS-S total scale. The four-factor model of the PedsQL 4.0 was not fully supported by the CFA—the root mean square error of approximation and the comparative fit index showed a mediocre and poor fit, respectively. IRT analysis indicated that all items of the PedsQL 4.0 fit with the scale and most of them showed good discrimination. The items and total scale provided more information in the lower levels of the latent trait. Males showed significantly higher scores than females in physical and emotional functioning, psychosocial health, and total scale. Adolescents with lower ages showed better quality of life than those with higher ages in all scores of the PedsQL 4.0. Conclusion The PedsQL 4.0 showed good psychometric properties with regard to internal consistency, test–retest reliability, and convergent validity in Iranian adolescents, which supports its use in clinical settings among Persian-speaking adolescents. However, factor structure according to our CFA indicates that future work should address how to improve fit. In addition, studies that include PedsQL 4.0 should consider gender and age effects were reported.

scholarly journals A Web-Based Adaptation of the Quality of Life in Bipolar Disorder Questionnaire: Psychometric Evaluation Study

10.2196/17497 ◽  
2020 ◽  
Vol 7 (4) ◽  
pp. e17497 ◽  
Author(s):  
Emma Morton ◽  
Sharon HJ Hou ◽  
Oonagh Fogarty ◽  
Greg Murray ◽  
Steven Barnes ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Bipolar Disorder ◽  
Factor Analysis ◽  
Psychometric Properties ◽  
Factor Structure ◽  
Internal Consistency ◽  
Original Study ◽  
Web Based ◽  
The Web

Background Quality of life (QoL) is considered a key treatment outcome in bipolar disorder (BD) across research, clinical, and self-management contexts. Web-based assessment of patient-reported outcomes offer numerous pragmatic benefits but require validation to ensure measurement equivalency. A web-based version of the Quality of Life in Bipolar Disorder (QoL.BD) questionnaire was developed (QoL Tool). Objective This study aimed to evaluate the psychometric properties of a web-based QoL self-report questionnaire for BD (QoL Tool). Key aims were to (1) characterize the QoL of the sample using the QoL Tool, (2) evaluate the internal consistency of the web-based measure, and (3) determine whether the factor structure of the original version of the QoL.BD instrument was replicated in the web-based instrument. Methods Community-based participatory research methods were used to inform the development of a web-based adaptation of the QoL.BD instrument. Individuals with BD who registered for an account with the QoL Tool were able to opt in to sharing their data for research purposes. The distribution of scores and internal consistency estimates, as indicated by Cronbach alpha, were inspected. An exploratory factor analysis using maximum likelihood and oblique rotation was conducted. Inspection of the scree plot, eigenvalues, and minimum average partial correlation were used to determine the optimal factor structure to extract. Results A total of 498 people with BD (349/498, 70.1% female; mean age 39.64, SD 12.54 years; 181/498, 36.3% BD type I; 195/498, 39.2% BD type II) consented to sharing their QoL Tool data for the present study. Mean scores across the 14 QoL Tool domains were, in general, significantly lower than that of the original QoL.BD validation sample. Reliability estimates for QoL Tool domains were comparable with that observed for the QoL.BD instrument (Cronbach alpha=.70-.93). Exploratory factor analysis supported the extraction of an 11-factor model, with item loadings consistent with the factor structure suggested by the original study. Findings for the sleep and physical domains differed from the original study, with this analysis suggesting one shared latent construct. Conclusions The psychometric properties of the web-based QoL Tool are largely concordant with the original pen-and-paper QoL.BD, although some minor differences in the structure of the sleep and physical domains were observed. Despite this small variation from the factor structure identified in the QoL.BD instrument, the latent factor structure of the QoL Tool largely reproduced the original findings and theoretical structure of QoL areas relevant to people with BD. These findings underscore the research and clinical utility of this instrument, but further comparison of the psychometric properties of the QoL Tool relative to the QoL.BD instrument is warranted. Future adaptations of the QoL Tool, including the production of an app-based version of the QoL Tool, are also discussed.

scholarly journals Validation and Psychometric Properties of the Arabic Version of the Duke Anticoagulation Satisfaction Scale (DASS)

2020 ◽  
Vol 11 ◽  
Author(s):  
Maha AlAmmari ◽  
Khizra Sultana ◽  
Sattam Nawaf AlHarbi ◽  
Ashwag Saud Marenga ◽  
Abdulrahman AlTuraiki ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Factor Analysis ◽  
Psychometric Properties ◽  
Internal Consistency ◽  
Health Care Professionals ◽  
Negative Impact ◽  
Arabic Language ◽  
Arabic Version ◽  
Satisfaction Scale

Background: To assess the health-related quality of life (HRQoL) of oral anticoagulant therapy users, different types of instruments are available, either general or specific tools like Duke Anticoagulation Satisfaction Scale (DASS). These tools allow the clinician to adjust the treatment regimen to focus on increasing anticoagulation adherence and reduce adverse clinical outcomes. This study aims to validate the translated Arabic version of DASS to assess the satisfaction level of patients using oral anticoagulants in the Arab population.Methods: The Duke Anticoagulation satisfaction scale (DASS) was translated into the Arabic language using MAPI group services. DASS was administered to 505 patients receiving anticoagulation with warfarin or apixaban. The generic scale measuring the quality of life EQ-5D-5L was also administered. Psychometric properties were assessed by Confirmatory Factor Analysis, internal consistency (Cronbach’s Alpha), exploratory factor analysis, convergent and divergent validity, and the correlation between the DASS and demographic variables, clinical characteristics, and the EQ-5D-5L instrument.Results: 439 subjects answered all the questions. From a total of 25 items, 22 grouped into three factors (limitations, positive impact, and negative impact). Each factor had good internal consistency (Cronbach Alpha 0.78–0.88). All the three factors correlated consistently with EQ-5D-5L measuring generic quality of life.Conclusion: The psychometric properties of the Arabic DASS version were comparable to the original English version. The Arabic version of the DASS showed very good reliability and validity. It can be used by health care professionals in other settings of anticoagulation clinics to assess patient’s satisfaction and limitations to anticoagulant treatment.

scholarly journals A Web-Based Adaptation of the Quality of Life in Bipolar Disorder Questionnaire: Psychometric Evaluation Study (Preprint)

2019 ◽  
Author(s):  
Emma Morton ◽  
Sharon HJ Hou ◽  
Oonagh Fogarty ◽  
Greg Murray ◽  
Steven Barnes ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Bipolar Disorder ◽  
Factor Analysis ◽  
Psychometric Properties ◽  
Factor Structure ◽  
Internal Consistency ◽  
Original Study ◽  
Web Based ◽  
The Web

BACKGROUND Quality of life (QoL) is considered a key treatment outcome in bipolar disorder (BD) across research, clinical, and self-management contexts. Web-based assessment of patient-reported outcomes offer numerous pragmatic benefits but require validation to ensure measurement equivalency. A web-based version of the Quality of Life in Bipolar Disorder (QoL.BD) questionnaire was developed (QoL Tool). OBJECTIVE This study aimed to evaluate the psychometric properties of a web-based QoL self-report questionnaire for BD (QoL Tool). Key aims were to (1) characterize the QoL of the sample using the QoL Tool, (2) evaluate the internal consistency of the web-based measure, and (3) determine whether the factor structure of the original version of the QoL.BD instrument was replicated in the web-based instrument. METHODS Community-based participatory research methods were used to inform the development of a web-based adaptation of the QoL.BD instrument. Individuals with BD who registered for an account with the QoL Tool were able to opt in to sharing their data for research purposes. The distribution of scores and internal consistency estimates, as indicated by Cronbach alpha, were inspected. An exploratory factor analysis using maximum likelihood and oblique rotation was conducted. Inspection of the scree plot, eigenvalues, and minimum average partial correlation were used to determine the optimal factor structure to extract. RESULTS A total of 498 people with BD (349/498, 70.1% female; mean age 39.64, SD 12.54 years; 181/498, 36.3% BD type I; 195/498, 39.2% BD type II) consented to sharing their QoL Tool data for the present study. Mean scores across the 14 QoL Tool domains were, in general, significantly lower than that of the original QoL.BD validation sample. Reliability estimates for QoL Tool domains were comparable with that observed for the QoL.BD instrument (Cronbach alpha=.70-.93). Exploratory factor analysis supported the extraction of an 11-factor model, with item loadings consistent with the factor structure suggested by the original study. Findings for the sleep and physical domains differed from the original study, with this analysis suggesting one shared latent construct. CONCLUSIONS The psychometric properties of the web-based QoL Tool are largely concordant with the original pen-and-paper QoL.BD, although some minor differences in the structure of the sleep and physical domains were observed. Despite this small variation from the factor structure identified in the QoL.BD instrument, the latent factor structure of the QoL Tool largely reproduced the original findings and theoretical structure of QoL areas relevant to people with BD. These findings underscore the research and clinical utility of this instrument, but further comparison of the psychometric properties of the QoL Tool relative to the QoL.BD instrument is warranted. Future adaptations of the QoL Tool, including the production of an app-based version of the QoL Tool, are also discussed.

scholarly journals Measuring health: related quality of life in hemodialysis patients. Psychometric properties of the Missoula-VITAS Quality of Life Index (MVQOLI-15) in Greece

2013 ◽  
Vol 1 (2) ◽  
pp. 17 ◽  
Author(s):  
Paraskevi Theofilou ◽  
Adamantia Aroni ◽  
Maria Ralli ◽  
Maria Gouzou ◽  
Sophia Zyga
Keyword(s):  
Quality Of Life ◽  
Psychometric Properties ◽  
Internal Consistency ◽  
Convergent Validity ◽  
Intraclass Correlation ◽  
Domain Analysis ◽  
Initial Assessment ◽  
Life Index ◽  
Quality Of Life Index

Different measuring tools have been used to understand the outcomes of end-stage renal disease (ESRD) therapies. However, survival, cost-effectiveness and quality of life (QOL) are the main parameters to evaluate treatment of ESRD. The current study meant to assess the psychometric properties (reliability and validity) of the Missoula-VITAS Quality of Life Index (MVQOLI-15) translation to Greek in patients undergoing hemodialysis (HD). A total sample of 79 HD patients voluntarily participated in this pilot study. Domain analysis of MVQOLI-15-Greek was conducted based on the collected data at initial assessment. The reliability properties of the instrument were tested using the following measures; internal consistency, repeatability, test-retest reliability and convergent validity. Domain analysis demonstrated that all domains of the questionnaire had good variability. MVQOLI-15-Greek internal consistency was satisfactory with an overall Cronbach&rsquo;s a at 0.74. Pearson&rsquo;s r and intraclass correlation coefficient revealed strong correlations (ranging from 0.91 to 0.98) between initial assessment and reassessment. MVQOLI-15-Greek convergent validity analysis indicated that the domains were strongly related to the same construct. The findings of the study indicate that the Greek version of MVQOLI-15 provided satisfactory psychometric properties supporting its use within pathological populations and in the context of national QOL measurement.

scholarly journals Factor structure, measurement invariance and psychometric properties of the Quality of Life Scale WHOQOL-BREF in the Ecuadorian context

2021 ◽  
Vol 34 (1) ◽  
Author(s):  
Sandra Lima-Castro ◽  
Paúl Arias-Medina ◽  
Alexandra Bueno-Pacheco ◽  
Eva Peña-Contreras ◽  
Mónica Aguilar-Sizer ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Factor Analysis ◽  
Psychometric Properties ◽  
Measurement Invariance ◽  
Factor Structure ◽  
Convergent Validity ◽  
Graph Analysis ◽  
Confirmatory Factor ◽  
Correlated Factors

Abstract Background The short version of the World Health Organization Quality of Life questionnaire (WHOQOL-BREF) is a popular instrument used to assess quality of life. The objective of this study was to evaluate the following psychometric properties: structural validity, convergent validity, internal consistency, and measurement invariance across sex of the WHOQOL-BREF in a sample of Ecuadorian adults. Methods We used a sample of undergraduates (n = 987) to assess the WHOQOL-BREF original four-factor structure, a model with correlated factors, a hierarchical model, and two models resulting from the exploratory factor analysis and exploratory graph analysis. All the models were evaluated using confirmatory factor analysis. Results The results of the exploratory factor analysis and exploratory graph analysis suggest that the items are organized into four factors, although differently from the original version and the orthogonality assumption is not maintained. The confirmatory factor analysis shows that the original WHOQOL-BREF structure with correlated factors presents adequate psychometric properties. However, we propose a four-factor structure that has the best psychometric properties and adequate internal consistency. The results of the measurement invariance show that strict and strong invariance is achieved between men and women. Convergent validity analysis reveals moderate correlations with self-esteem, resilience, and social support. Conclusions Despite the original version of the WHOQOL-BREF with correlated factors has acceptable psychometric properties in the Ecuadorian context, we propose a version with a different organization of its items, which is consistent with the findings of other investigations.

scholarly journals Validity and Reliability of the WHOQOL-BREF in the measurement of the quality of life of Sickle Disease Patients in Bahrain

2021 ◽  
Author(s):  
Amer Almarabheh ◽  
Manal Al Ghamdi ◽  
Abdulla Elbarbary ◽  
Ahmed Alqashar ◽  
Faisal alserdieh ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Factor Analysis ◽  
Confirmatory Factor Analysis ◽  
Internal Consistency ◽  
Convergent Validity ◽  
Alpha Coefficient ◽  
Cronbach’S Alpha ◽  
Cronbach's Alpha ◽  
Confirmatory Factor

Abstract Background Limited attention is devoted to the improvement of the quality of life of patients suffering from the negative consequences of Sickle cell disease (SCD). Our study focuses on the evaluation of the performance of the WHOQOL-BREF as a tool to measure the quality of life of SCD Patients in Bahrain. Methods We conducted a cross-sectional study that enrolled 273 SCD patients selected using a simple random sampling technique from primary health-care centers in Bahrain in 2019. A designed questionnaire including the WHOQOL-BREF was filled by the patients during face-to-face interviews in the health centers. The reliability of the WHOQOL-BREF was assessed by standardized Cronbach’s alpha coefficient, and the validity was measured by convergent validity, principal component analysis and confirmatory factor analysis. Results The WHOQOL-BREF had good internal consistency as Cronbach’s alpha coefficient for the overall scale was 0.91. The convergent validity results indicated that the correlation coefficients values for all scale domains are significantly correlated at α < 0.01. Confirmatory factor analysis found that the four-domain structure produced a robust fit to the data. Conclusions The WHOQOL-BREF tool has high internal consistency and validity in assessing the quality of life of Sickle Disease patients in Bahrain.

Translation and Validation of the Thai Version of the Wisconsin Quality of Life Questionnaire (TH WISQoL) for Kidney Stone Patients

2020 ◽  
Vol 103 (11) ◽  
pp. 1194-1199
Keyword(s):  
Quality Of Life ◽  
Internal Consistency ◽  
Kidney Stone ◽  
Convergent Validity ◽  
Large Scale ◽  
Short Form ◽  
Outcome Measurement ◽  
Life Questionnaire ◽  
Sf 36

Objective: To develop and validate a Thai version of the Wisconsin Quality of Life (TH WISQoL) Questionnaire. Materials and Methods: The authors developed the TH WISQoL Questionnaire based on a standard multi-step process. Subsequently, the authors recruited patients with kidney stone and requested them to complete the TH WISQoL and a validated Thai version of the 36-Item Short Form Survey (TH SF-36). The authors calculated the internal consistency and interdomain correlation of TH WISQoL and compared the convergent validity between the two instruments. Results: Thirty kidney stone patients completed the TH WISQoL and the TH SF-36. The TH WISQoL showed acceptable internal consistency for all domains (Cronbach’s alpha 0.768 to 0.909). Interdomain correlation was high for most domains (r=0.698 to 0.779), except for the correlation between Vitality and Disease domains, which showed a moderate correlation (r=0.575). For convergent validity, TH WISQoL demonstrated a good overall correlation to TH SF-36, (r=0.796, p<0.05). Conclusion: The TH WISQoL is valid and reliable for evaluating the quality of life of Thai patients with kidney stone. A further large-scale multi-center study is warranted to confirm its applicability in Thailand. Keywords: Quality of life, Kidney stone, Validation, Outcome measurement

Translation and initial validation of the occupational balance questionnaire to Arabic—Occupational Balance Questionnaire-A

2021 ◽  
pp. 030802262110394
Author(s):  
Brightlin N Dhas ◽  
Petra Wagman ◽  
Firas A Marji ◽  
Carita Håkansson ◽  
Ricardo Carrasco
Keyword(s):  
Quality Of Life ◽  
Internal Consistency ◽  
Content Validity ◽  
Convergent Validity ◽  
Occupational Therapists ◽  
Health Indicators ◽  
Family Quality Of Life ◽  
Cognitive Debriefing ◽  
Arabic Speaking

Introduction Occupational balance (OB) is related to many health indicators, including quality of life. The Occupational Balance Questionnaire (OBQ11) was developed to measure OB, and to date, no Arabic translations of the questionnaire exist. The aim of the study was to describe the translation process of OBQ11 to Arabic and to evaluate its content validity, internal consistency, construct validity, and convergent validity. Methods OBQ11 was translated to Arabic (OBQ11-A) following standard guidelines. Content validity feedback was obtained from ten Arabic-speaking occupational therapists and in a cognitive debriefing with seven volunteers. In addition, OBQ11-A and the Family Quality of Life Survey-2006 were administered to 67 Arabic-speaking participants from a larger study about OB among parents. Results High level of agreement was found on the content of OBQ11-A from the occupational therapists. Cognitive debriefing interviews indicated that OBQ11-A was easy to understand. Cronbach’s alpha for the total OBQ11-A score was 0.864 indicating good internal consistency. Exploratory factor analysis showed acceptable factor loadings for all items. The total scores showed positive statistically significant associations with Family Quality of Life Scores ( r = 0.561, p < 0.001). Conclusions OBQ11-A may prove useful for assessing OB in Arabic-speaking populations. Further research is needed to establish its reliability.

Psychometric Properties of the Hindi Version of SPADI in Overhead Athletes With Shoulder Impingement Syndrome

2018 ◽  
Vol 23 (6) ◽  
pp. 246-252
Author(s):  
Saurabh Sharma ◽  
M. Ejaz Hussain
Keyword(s):  
Psychometric Properties ◽  
Internal Consistency ◽  
Convergent Validity ◽  
Impingement Syndrome ◽  
Minimal Detectable Change ◽  
Shoulder Impingement Syndrome ◽  
Factor Solution ◽  
Shoulder Impingement ◽  
Overhead Athletes ◽  
Test Retest Reliability

Patient-related outcome measures are often used for assessing and determining management efficacy of shoulder impingement syndrome (SIS) in overhead athletes. This study was undertaken to examine the psychometric properties (structural validity, convergent validity, internal consistency, test-retest reliability, and minimal detectable change) and perform partial confirmatory factor analysis (PCFA) of the Hindi SPADI. Eighty male athletes with a mean age of 21.5 ± 2.20 years were enrolled in the study. Hindi SPADI test-retest reproducibility was calculated by intraclass correlation coefficient (ICC2,1), and Cronbach alpha helped determine internal consistency of the index. Pearson correlation coefficient compared the Hindi SPADI with the Hindi DASH scale to determine convergent validity, while the measurement error was calculated by minimal detectable change (MDC95). Exploratory factor analysis utilized for assessing the structural validity of the index gave a five-factor solution, which explained 70.03% of the variances. The test-retest reliability (ICC2,1), internal consistency, and convergent validity were found to be high, at 0.87, 0.75, and 0.94, respectively. The MDC95was calculated to be 14.20. Additionally, the PCFA confirmed the five-factor solution with fit indices. This Hindi version of SPADI demonstrated satisfactory psychometric properties in overhead athletes with shoulder impingement syndrome.

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