Evaluation of the Psychometric Properties of the Swiss French Version of Older People’s Quality Of Life Questionnaire (OPQOL-35-SF)

Abstract Background: The proportion of older people aged more than 65 years old is continuously increasing in the world population. The quality of life is an important factor in their biopsychosocial handling. The questionnaire “Older People’s Quality of Life-35” (OPQOL-35) has been specially developed for the assessment of the senior’s quality of life. The aim of this study is to translate and evaluate the psychometric properties of the transcultural Swiss French version of the OPQOL-35 questionnaire (OPQOL-35-SF). Method: Forward-backward procedure was applied to translate the original questionnaire from English into Swiss French. Then, a sample of older people completed the questionnaire. The construct validity was evaluated by comparing the results of the OPQOL-35-SF with the scores of three other questionnaires (WHOQOL-OLD, CASP-12 and EQ-5D-5L) and two visual analogue scales (health and quality of life). The questionnaire’s structure has been assessed through exploratory and confirmatory factor analysis. The OPQOL-35-SF questionnaire was submitted a second time after 7 to 23 days to evaluate the reliability. Results: 264 older people completed all the questionnaires once and 262 the OPQOL-35-SF a second time. The mean age of participants was 76.8 (SD = 7.1). Most of them were women (73,9%). KMO is of 0.86 and the Bartlett’s test of sphericity is significant (p<0.001). The result of EFA shows 8 factors with eigenvalues greater than one, which explained 58% of the observed variance. All the items have a significant impact (<0.30) in at least one factor. The convergent validity presents low to moderate correlations (rho: 0.384-0.663). Internal consistency is good with a Cronbach’s alpha at 0.875 for test and at 0.902 for retest. Test-retest reliability presents an ICC2.1 at 0.83 (IC 0.78 to 0.87). Conclusion: The Swiss French version of the questionnaire OPQOL-35 shows psychometric properties which permit its use in the clinical practice or for research purposes. A supplementary sample would be necessary for a better repartition of the items in the different factors.

Download Full-text

Persian version of the brief Older People’s Quality of Life questionnaire (OPQOL-brief): the evaluation of the psychometric properties

Health and Quality of Life Outcomes ◽

10.1186/s12955-020-01586-8 ◽

2020 ◽

Vol 18 (1) ◽

Author(s):

Awat Feizi ◽

Zahra Heidari

Keyword(s):

Quality Of Life ◽

Factor Analysis ◽

Construct Validity ◽

Older People ◽

Psychometric Properties ◽

Life Questionnaire ◽

Quality Of Life Questionnaire ◽

Persian Version ◽

Test Retest Reliability

Abstract Background and objective Quality of life (QoL) is a multi-dimensional concept and its assessment is one of important themes of care for older people. Assessing QoL in older people needs specific scales. The aim of this study was to culturally adapt and investigate the psychometric properties of the Persian version of brief Older People’s Quality of Life questionnaire (OPQOL-brief) in an Iranian older population. Methods This methodological cross-sectional study was conducted among 525 Persian-speaking older people (aged 60 and over), living in Isfahan, Iran. Translation of the OPQOL-brief questionnaire was performed using forward–backward method. Test–retest reliability was evaluated through Intra Class Correlation (ICC) coefficient and internal consistency by using Cronbach’s α. Construct validity was investigated by using exploratory factor analysis (EFA), confirmatory factor analysis (CFA), and Latent class analysis (LCA). Criterion, convergent and discriminant validities were also assessed. Results Persian version of the OPQOL-brief showed good test–retest reliability (ICC = 0.842, 95% CI = 0.73–0.91; P < 0.001). Persian OPQOL-brief scale demonstrated high internal consistency (Cronbach’s α = 0.83). It showed good discriminant validity and differentiated old patients from healthy older individuals (P < 0.001). Construct validity based on EFA led to extraction of three dimensions (“socioeconomic”, “emotional”, and “physical” well-being) and the CFA confirmed the adequacy of extracted construct from EFA (CFI = 0.909, PCFI = 0.52, PNFI = 0.5, CMIN/DF = 3.012, and RMSEA = 0.08). LCA classified participants into three classes in terms of QoL level (low (16%), middle (67%), and high (17%)). Criterion validity and convergent validity revealed significant positive correlations between OPQOL-brief and physical and psychological dimensions of the SF-36. Conclusion The Persian version of the OPQOL-brief is a reliable and valid instrument for assessing QoL with applicability in a broad range of older Persian language population.

Download Full-text

The McGill Quality of Life Questionnaire-Revised (MQOL-R). Psychometric properties and validation of a Brazilian version on palliative care patients: a cross-sectional study

Health and Quality of Life Outcomes ◽

10.1186/s12955-020-01621-8 ◽

2020 ◽

Vol 18 (1) ◽

Author(s):

Paul Vicuña Serrano ◽

Gerardo Beltran Serrano ◽

Iraci L. S. Torres ◽

Roberta Rossi Graudner ◽

Wolnei Caumo

Keyword(s):

Quality Of Life ◽

Palliative Care ◽

Psychometric Properties ◽

Convergent Validity ◽

Karnofsky Performance Scale ◽

Life Questionnaire ◽

Cross Sectional ◽

Quality Of Life Questionnaire ◽

Validity Criterion

Abstract Background To assess the psychometric properties, including internal consistency, construct validity, criterion validity, criterion-group validity, and responsiveness, the Reviewed McGill Quality of Life Questionnaire (MQOL-R), into Brazilian Portuguese-(BrP). Also, to analyze the relationship of the BrP-MQOL-R with the scores on the Karnofsky Performance Scale (KPS) and on the Numerical Pain Scale (NPS 0–10). Methods The BrP-MQOL-R was administered to a sample of 146 adults (men = 78). A team of experts translated the MQOL-R according to international guidelines. Convergent validity and Confirmatory factor analysis (CFA) was performed. Results The BrP-MQOL-R Cronbach’s alpha was 0.85. CFA supported the original four-factor structure, with the following revised model fit-indices: PCLOSE = 0.131, Tucker-Lewis Index (TLI) rho 2 = 0.918, incremental fit index (IFI) delta 2 = 0.936. The convergence validity is supported by a significant correlation between BrP-MQOL-R total scores and their subscales with KPS and with the single item related to the quality of life. And by a converse correlation with the pain scores in the NPS (0–10). Receiver operator characteristics (ROC) analysis showed subjects with KPS equal to or lower than 30% could be discriminated from those with scores on KPS higher than 30% by an area under the curve (AUC) = 0.71, sensitivity = 97%, and specificity = 92%). Conclusion The BrP-MQOL-R proves to be a reliable instrument for assessing the quality of life (QOL) in palliative care (PC), with primary evidence of validity. BrP-MQOL-R presented adequate discriminate properties to identify distinct conditions that impact the QOL in PC.

Download Full-text

Psychometric Properties of the Persian Translation of the Sexual Quality of Life–Male Questionnaire

American Journal of Men s Health ◽

10.1177/1557988316629641 ◽

2016 ◽

Vol 11 (3) ◽

pp. 564-572 ◽

Cited By ~ 10

Author(s):

Raziyeh Maasoumi ◽

Hamidreza Mokarami ◽

Morteza Nazifi ◽

Lorann Stallones ◽

Abrahim Taban ◽

...

Keyword(s):

Quality Of Life ◽

Psychometric Properties ◽

Convergent Validity ◽

Work Ability Index ◽

Sexual Quality Of Life ◽

Persian Version ◽

Ability Index ◽

Test Retest Reliability ◽

Persian Translation

Sexual dysfunction has been demonstrated to be related to a poor quality of life. These dysfunctions are especially prevalent among men. This cross-sectional study aimed to investigate the psychometric properties of the Persian translation of the Sexual Quality of Life–Male (SQOL-M), translated and adapted to measure sexual quality of life among Iranian men. Forward–backward procedures were applied in translating the original SQOL-M into Persian, and then the psychometric properties of the Persian translation of the SQOL-M were studied. A total of 181 participants (23-60 years old) were included in the study. Validity was assessed by construct validity using confirmatory factor analysis, convergent validity, and content validity. The international index of erectile function (IIEF) and the work ability index were used to study the convergent validity. Reliability was evaluated through internal consistency and test–retest reliability analyses. The results from confirmatory factor analysis confirmed a one-factor solution for the Persian version of the SQOL-M. Content validity of the translated measure was endorsed by 10 specialists. Pearson correlations indicated that work ability index score, dimensions of the IIEF, and the IIEF total score were positively correlated with the Persian version of the SQOL-M ( p < .001). Reliability evaluation indicated a high internal consistency and test–retest reliability. The Cronbach’s alpha coefficient and intraclass correlation coefficients were .96 and .95, respectively. Results indicated that the Persian version of the SQOL-M has good to excellent psychometric properties and can be used to assess the sexual quality of life among Iranian men.

Download Full-text

The Psychometric Properties of the Older People's Quality of Life Questionnaire, Compared with the CASP-19 and the WHOQOL-OLD

Current Gerontology and Geriatrics Research ◽

10.1155/2009/298950 ◽

2009 ◽

Vol 2009 ◽

pp. 1-12 ◽

Cited By ~ 72

Author(s):

Ann Bowling

Keyword(s):

Quality Of Life ◽

Older People ◽

Psychometric Properties ◽

Population Sample ◽

Reliability And Validity ◽

Ethnically Diverse ◽

Population Surveillance ◽

Life Questionnaire ◽

Design And Methods

Purpose. To present the psychometric properties of a new measure of quality of life in older age, the Older People's Quality of Life (OPQOL) Questionnaire, compared with the CAPSE-19 and the WHOQOL-OLD.Design and Methods. The vehicle was three national population surveys of older people living at home in Britain, including a survey of ethnically diverse older people.Results. The OPQOL had acceptable levels of reliability and validity in British population samples of older people, but more modest in the ethnically diverse population sample. The CASP-19 and WHOQOL-OLD had acceptable levels of reliability and validity in the British population sample, but not in the ethnically diverse sample.Implications. The OPQOL has potential for use as a multidimensional population surveillance instrument for use with older populations, or as an outcome measure of multisector policy. Its strengths are that its development was embedded firmly in the perspectives of older people, integrated with theory.

Download Full-text

Hitting The Bullseye: The Psychometric Properties of the Assessment of Burden of Chronic Conditions (ABCC)-Scale in The Netherlands

10.21203/rs.3.rs-861720/v1 ◽

2021 ◽

Author(s):

Danny Claessens ◽

Esther A. Boudewijns ◽

Lotte C.E.M. Keijsers ◽

Annerika H.M. Gidding-Slok ◽

Bjorn Winkens ◽

...

Keyword(s):

Quality Of Life ◽

Chronic Conditions ◽

Convergent Validity ◽

Life Questionnaire ◽

Cronbach’S Alpha ◽

Retest Reliability ◽

Quality Of Life Questionnaire ◽

Cronbach's Alpha ◽

Test Retest Reliability

Abstract Background Chronic conditions impose a major impact on quality of life and on healthcare. The Assessment of Burden of Chronic Conditions (ABCC-)tool was developed to improve experienced quality of care and quality of life by facilitating shared decision-making and self-management. It assesses the experienced burden of one or multiple conditions, and visualises and integrates the burden in daily care. However, its scale’s validity and reliability are yet unknown. The aim of this study is to evaluate whether the ABCC-scale is valid and reliable in people with Chronic Obstructive Pulmonary Disease (COPD), asthma, or Type 2 Diabetes Mellitus (T2DM). Methods The Saint George Respiratory Questionnaire (SGRQ), the Standardized Asthma Quality of Life Questionnaire (AQLQ-S), and the Audit of Diabetes Dependent Quality of Life Questionnaire (ADDQoL19) were compared to the ABCC-scale to assess convergent validity. Convergent validity was assumed when at least 75% of the postulated correlations were higher than 0.7, or between 0.3 and 0.7 for single-item subscales. To measure known-group validity, participants were categorized according to exacerbation status, depression, asthma control, insulin dependence, complications and obesity. The ABCC-scale was deemed internally consistency upon a Cronbach’s alpha ≥ 0.90 for the total scale, and ≥ 0.70 for subscales. Test-retest reliability was evaluated at a two-week interval. Results A total of 65, 62, and 60 people with COPD, asthma, T2DM respectively were included. The ABCC-scale correlated, in accordance with hypotheses, with the SGRQ (75%), AQLQ-S (100%), and ADDQoL19 (75%). Differentiation of known-groups based on the ABCC-scale was possible for all specified groups. The total score and subscores of the ABCC-scale were internally consistent with a Cronbach’s alpha of 0.90, 0.92, and 0.91 for the total score for people with COPD, asthma, and T2DM respectively. The ABCC-scale had a good test-retest reliability with an Intraclass Correlation Coefficient of 0.95, 0.93, and 0.95 for people with COPD, asthma and T2DM respectively. Conclusions The ABCC-scale is a valid and reliable questionnaire that can be used within the ABCC-tool for people with COPD, asthma or T2DM. Future research should indicate whether this also applies to people with multimorbidity, and what the effects and experiences are upon clinical use.

Download Full-text

Validation of the Iranian Version of the ECOS-16 Questionnaire in Patients with Osteoporotic Vertebral Fractures

Asian Spine Journal ◽

10.4184/asj.2017.11.4.586 ◽

2017 ◽

Vol 11 (4) ◽

pp. 586-593

Author(s):

Parisa Azimi ◽

Taravat Yazdanian ◽

Ali Montazeri

Keyword(s):

Quality Of Life ◽

Psychometric Properties ◽

Vertebral Fractures ◽

World Health ◽

Life Questionnaire ◽

Retest Reliability ◽

Osteoporotic Vertebral Fractures ◽

Sf 36 ◽

Test Retest Reliability

<sec><title>Study Design</title>Prospective clinical study.</sec><sec><title>Purpose</title>To translate and validate the Quality of Life Questionnaire of the European Foundation for Osteoporosis (ECOS-16) in patients with osteoporotic vertebral fractures in Iran.</sec><sec><title>Overview of Literature</title>It is important to assess the psychometric properties of instruments measuring patient-reported outcomes.</sec><sec><title>Methods</title>The translation was performed using the backward-forward translation method. The final version was generated by consensus among the translators. Every woman who had a T-score of <−2.5 completed ECOS-16. Patients were divided into two study groups according to the World Health Organization's criteria: those with at least one vertebral fracture (surgery group) and those with no fractures (control group). They were asked to respond to the questionnaire at three points in time: preoperative and twice within 1-week interval after surgery assessments (6-month follow-up). The 36-item short-form health survey (SF-36) also was completed. The psychometric properties of the questionnaire were assessed using internal consistency, test-retest reliability, convergent validity, discriminant validity, and responsiveness.</sec><sec><title>Results</title>Of 137 recruited women, 39 underwent surgery and 98 did not. Analysis of the ECOS-16 scales showed an appropriate reliability with Cronbach's alpha of >0.70 for all scales. Test-retest reliability as indicated by intraclass correlation coefficient was found to be 0.85 (0.68–0.91). Additionally, the correlation of each item with its hypothesized domain of the ECOS-16 showed acceptable results, suggesting that the items had a substantial relationship with their own domains. Further analysis also indicated that the questionnaire was responsive to change (effect size, 0.85; standardized response mean, 0.93) (<italic>p</italic><0.001). Significant correlations existed between scores of similar subscales of ECOS-16 and SF-36 (<italic>p</italic><0.001).</sec><sec><title>Conclusions</title>ECOS-16 is an acceptable, reliable, valid, and responsive measure to assess the quality of life in patients with osteoporotic vertebral fractures.</sec>

Download Full-text

The construction and validation of the Severe Asthma Questionnaire

European Respiratory Journal ◽

10.1183/13993003.00618-2018 ◽

2018 ◽

Vol 52 (1) ◽

pp. 1800618 ◽

Cited By ~ 12

Author(s):

Michael E. Hyland ◽

Rupert C. Jones ◽

Joseph W. Lanario ◽

Matthew Masoli

Keyword(s):

Quality Of Life ◽

Severe Asthma ◽

Convergent Validity ◽

Life Questionnaire ◽

Retest Reliability ◽

Qualitative And Quantitative ◽

Quality Of Life Scale ◽

Global Quality Of Life ◽

Test Retest Reliability

The US Food and Drug Administration's procedure for scale validation requires a documented stepwise process of qualitative and quantitative data. The aim of this paper is to provide final quantitative validating data for the Severe Asthma Questionnaire (SAQ).The SAQ, Asthma Control Test, Mini Asthma Quality of Life Questionnaire and EQ-5D-5L were completed by 160 patients attending a severe asthma clinic; 51 patients completed the SAQ on two occasions for test–retest reliability analysis. The SAQ produces two scores, a SAQ score based on the average of 16 items and a SAQ-global score from a single 100-point global quality of life scale.Construct validity was demonstrated by factor analysis of the 16 items, convergent validity by correlations of >0.6 between the SAQ, SAQ-global and other questionnaires, and discriminant validity by the ability of the SAQ and SAQ-global to distinguish between different treatment levels. Test–retest reliability (intra-class correlation) was 0.93 for the SAQ and 0.93 for the SAQ-global, and the alpha coefficient for the SAQ was 0.93.The SAQ was developed using recommended qualitative and quantitative procedures for scale development, and can be used to gain insight into patients’ perceptions of how severe asthma and its treatment affects their lives.

Download Full-text

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

Health and Quality of Life Outcomes ◽

10.1186/s12955-021-01742-8 ◽

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.

Download Full-text

The McGill Quality of Life Questionnaire-Revised (MQOL-R). Psychometric properties and validation of a Brazilian version on palliative care patients: A Cross-sectional Study

10.21203/rs.3.rs-42013/v2 ◽

2020 ◽

Author(s):

Paul Vicuña Serrano ◽

Gerardo Beltran Serrano ◽

Iraci Lucena da Silva Torres ◽

Roberta Rossi Graudner ◽

Wolne Caumo ◽

...

Keyword(s):

Quality Of Life ◽

Palliative Care ◽

Psychometric Properties ◽

Convergent Validity ◽

Karnofsky Performance Scale ◽

Life Questionnaire ◽

Cross Sectional ◽

Quality Of Life Questionnaire ◽

Validity Criterion

Abstract Background: To assess the psychometric properties, including internal consistency, construct validity, criterion validity, criterion-group validity, and responsiveness, the Reviewed McGill Quality of Life Questionnaire (MQOL-R), into Brazilian Portuguese-(BrP). Also, to analyze the relationship of the BrP-MQOL-R with the scores on the Karnofsky Performance Scale (KPS) and on the Numerical Pain Scale (NPS 0-10).Methods: The BrP-MQOL-R was administered to a sample of 146 adults (men = 78). A team of experts translated the MQOL-R according to international guidelines. Convergent validity and Conﬁrmatory factor analysis (CFA) was performed. Results: The BrP-MQOL-R Cronbach´s alfa was 0.85. CFA supported the original four-factor structure, with the following revised model fit-indices: PCLOSE = 0.131, Tucker-Lewis Index (TLI) rho2= 0.918, incremental fit index (IFI) delta 2 = 0.936. The convergence validity is supported by a significant correlation between BrP-MQOL-R total scores and their subscales with KPS and with the single item related to the quality of life. And by a converse correlation with the pain scores in the NPS (0-10). Receiver operator characteristics (ROC) analysis showed subjects with KPS equal to or lower than 30% could be discriminated from those with scores on KPS higher than 30% by an area under the curve (AUC) = 0.71, sensitivity = 97%, and specificity = 92%). Conclusion: The BrP-MQOL-R proves to be a reliable instrument for assessing the quality of life (QOL) in palliative care (PC), with primary evidence of validity. BrP-MQOL-R presented adequate discriminate properties to identify distinct conditions that impact the QOL in PC.

Download Full-text

The McGill Quality of Life Questionnaire-Revised (MQOL-R). Psychometric Properties and Validation of a Brazilian Version on Palliative Care Patients: A Cross-sectional Study

10.21203/rs.3.rs-42013/v1 ◽

2020 ◽

Author(s):

Paul Vicuña Serrano ◽

Gerardo Beltran Serrano ◽

Iraci Lucena da Silva Torres ◽

Roberta Rossi Graudner ◽

Wolne Caumo ◽

...

Keyword(s):

Quality Of Life ◽

Palliative Care ◽

Psychometric Properties ◽

Convergent Validity ◽

Karnofsky Performance Scale ◽

Life Questionnaire ◽

Cross Sectional ◽

Quality Of Life Questionnaire ◽

Validity Criterion

Abstract Background: To assess the psychometric properties, including internal consistency, construct validity, criterion validity, criterion-group validity, and responsiveness, the Reviewed McGill Quality of Life Questionnaire (MQOL-R), into Brazilian Portuguese-(BrP). Also, to analyze the relationship of the BrP-MQOL-R with the scores on the Karnofsky Performance Scale (KPS) and on the Numerical Pain Scale (NPS 0-10).Methods: The BrP-MQOL-R was administered to a sample of 146 adults (men = 78). A team of experts translated the MQOL-R according to international guidelines. Convergent validity and Conﬁrmatory factor analysis (CFA) were performed. Results: The BrP-MQOL-R Cronbach´s alfa was 0.85. CFA supported the original four-factor structure, with the following revised model fit-indices: PCLOSE = 0.131, Tucker-Lewis Index (TLI) rho2= 0.918, incremental fit index (IFI) delta 2 = 0.936. The convergence validity is supported by a significant correlation between BrP-MQOL-R total scores and their subscales with KPS and with the single item related to the quality of life. And by a converse correlation with the pain scores in the NPS (0-10). Receiver operator characteristics (ROC) analysis showed subjects with KPS equal to or lower than 30% could be discriminated from those with scores on KPS higher 30% by an area under the curve (AUC) = 0.71, sensitivity = 97% and specificity = 92%). Conclusion: The BrP-MQOL-R proves to be a reliable instrument for assessing the quality of life (QOL) in palliative care (PC), with primary evidence of validity. BrP-MQOL-R presented adequate discriminate properties to identify distinct conditions that impact the QOL in PC.

Download Full-text