scholarly journals The Persian Translation and validation of the celiac disease quality of life questionnaire (CDQOL)

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Zeinab Nikniaz ◽  
Mohammad Asghari Jafarabadi ◽  
Saeedeh Ghaffarifar ◽  
Zahra Ravand ◽  
Zahra Akbari Namvar ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Factor Analysis ◽  
Celiac Disease ◽  
Internal Consistency ◽  
Content Validity ◽  
Life Questionnaire ◽  
Retest Reliability ◽  
Quality Of Life Questionnaire ◽  
Test Retest Reliability

Abstract Background Considering the importance of having a celiac disease-specific measure of the quality of life (QOL) in Persian, the present study aimed to translate the celiac disease quality of life questionnaire (CDQOL) into Persian and evaluate its psychometric properties. Methods In this cross-sectional study, the Forward–Backward translation method was used. The content validation ratio (CVR) and the content validity index (CVI) were used for content validity assessment. The construct validity was assessed by exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) on 220 celiac patients who were selected randomly from the celiac disease (CD) registry database. The correlations between the result of the Persian version of CDQOL (PCDQOL), self-rated QOL, and short form-36 (SF36) were analyzed using the Pearson correlation test. The internal consistency and test–retest reliability were measured through Cronbach’s alpha and intraclass correlation coefficient (ICC). Results In the present study, 220 celiac patients with a mean age of 35.54 ± 10.29 years participated. The mean CVI, CVR, and impact score of PCDQOL were 0.98, 0.96, and 4.82 respectively. Using EFA, four factors have extracted that had a good fit in CFA (Chi-square/DF = 1.74, RMSEA: 0.08, and CFI: 0.90, and NFI: 0.90). The results showed that there was a moderate to high correlation between PCDQOL, SF36 (r: 0.587, p = 0.02), and self-rated QOL (r: 0.64, p < 0.001). The questionnaire had high internal consistency (Cronbach alpha: 0.93) and test–retest reliability (ICC: 0.96 [0.86–0.99]). Conclusion The PCDQOL questionnaire could be used by physicians and nutritionists to assess HRQOL in celiac patients in Iran.

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.

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

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.

scholarly journals Validity, reliability, and sensitivity to change of the Thai version of the Migraine-Specific Quality of Life Questionnaire version 2.1

2018 ◽  
Vol 11 (4) ◽  
pp. 331-342
Author(s):  
Thanin Asawavichienjinda ◽  
Pongpat Vorasayan ◽  
Jirawadee Noiwattanakul ◽  
Kammant Phanthumchinda
Keyword(s):  
Quality Of Life ◽  
Internal Consistency ◽  
Life Questionnaire ◽  
Sensitivity To Change ◽  
Retest Reliability ◽  
Associated Symptoms ◽  
Questionnaire Version ◽  
Test Retest Reliability

AbstractBackgroundThe Migraine-Specific Quality of Life Questionnaire version 2.1 (MSQv2.1) is used to evaluate the impact of symptoms on the quality of life (QoL) of migraineurs.ObjectiveTo evaluate primarily the concurrent validity, test–retest reliability, and internal consistency, and secondarily the sensitivity to change of a Thai version of the MSQv2.1.MethodsThe original English version of the MSQv2.1 was translated into a Thai version. The Thai version of the MSQv2.1 was assessed for content and language equivalence. Validity of the Thai version of the MSQv2.1 was assessed using migraine characteristics in a prospective study conducted at the Chulalongkorn Comprehensive Headache Centre of King Chulalongkorn Memorial Hospital. Test–retest reliability and internal consistency were tested in migraineurs. Sensitivity to change was evaluated in another group of migraineurs using an 8-week follow-up.ResultsWe recruited 30 migraineurs to test the validity, test–retest reliability, and internal consistency of the Thai version of the MSQv2.1 and 11 migraineurs to test its sensitivity to change. The Thai version of the MSQv2.1 scores were significantly correlated with migraine symptoms (inverse coefficient range from –0.62 to –0.39) except for associated symptoms, which had no correlation with any of the dimensions or overall QoL score. Spearman’s correlation coefficient for test–retest reliability was 0.56–0.83, and Cronbach’s α for internal consistency was 0.91–0.96. Headache, including average pain duration per attack, pain severity score (numeric rating scale), associated symptoms and dimensions, and overall QoL score of the Thai version of MSQv2.1 improved over time (P < 0.05). Moreover, improvement in headache correlated (coefficient range 0.67–0.77) with improvement in overall QoL score and some dimensions of the Thai version of the MSQv2.1 (coefficient range 0.66–0.77).ConclusionThe Thai version of the MSQv2.1 had validity, acceptable internal consistency, moderate-to-strong test–retest reliability, and strong correlation between improvement in headache severity and overall QoL score. A future study with a larger sample size and longer follow-up is required for better estimates of internal consistency and sensitivity to change.

scholarly journals Psychometric properties of the portuguese version of the chronic urticaria quality of life questionnaire (CU-Q2oL)

2019 ◽  
Vol 17 (1) ◽  
Author(s):  
Pedro Lopes Ferreira ◽  
Margarida Gonçalo ◽  
José Alberto Ferreira ◽  
Ana Célia Costa ◽  
Ana Todo-Bom ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Factor Analysis ◽  
Exploratory Factor Analysis ◽  
Internal Consistency ◽  
Chronic Urticaria ◽  
Life Questionnaire ◽  
Quality Of Life Questionnaire ◽  
Portuguese Version ◽  
Sf 36

Abstract Background Chronic urticaria is defined as the appearance of urticarial lesions and/or angioedema during a period of more than six weeks. We aimed at developing the Portuguese version of the Chronic Urticaria Quality of Life Questionnaire (CU-Q2oL) and at testing its reliability and the content, construct and criterion validity. Methods The forward-backward approach to a linguistic equivalence was followed, after which a clinical review and a cognitive debriefing with patients were performed. The intraclass correlation coefficient checked test-retest reliability with patients filling the same questionnaire with one week apart and the Cronbach’s alpha indicator assessed the internal consistency. Construct validity was tested by an exploratory factor analysis and by hypothesis tests involving sociodemographic and clinical patient characteristics, including the urticaria control test (UCT). On the other hand, criterion validity was tested through correlations with the Short-Form Health Survey SF-36, EQ-5D-5 L, and the Dermatology Quality of Life Index (DLQI). Results A total of 162 patients from seven hospital units were included. The mean (standard deviation) age was 42.6 (13.3) and 81.6% were female. CU-Q2oL was entirely filled by all respondents. Internal consistency was 0.947 for the overall score, ranging from 0.661 (limits) to 0.899 (sleep problems) and the corresponding reproducibility indicator was 0.910, based on 23 patients and ranging from 0.711 (swelling) and 0.957 (looks). Exploratory factor analysis in general confirmed the original structure originally obtained by the authors. All CU-Q2oL dimensions were highly correlated with DLQI Index and differentiated well between males and females, and between different levels of wheals and pruritus. In addition, moderate negative correlations were found between Cu-Q2oL scores and the dimensions from SF-36 and EQ-5D-5 L. Conclusions The satisfactory metric properties confirmed the cultural adaptation and validity of CU-Q2oL into Portuguese population, providing the clinicians with a valid tool to evaluate the impact of chronic urticaria on patient’s QoL and therefore adjust their treatment. Trial registration number Not applicable.

scholarly journals Psychometric properties of the Persian translation of maternal postpartum quality of life questionnaire (MAPP-QOL)

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Tahereh Mokhtaryan-Gilani ◽  
Giti Ozgoli ◽  
Nourossadat Kariman ◽  
Hamid Sharif Nia ◽  
Mahbobeh Ahmadi Doulabi ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Factor Analysis ◽  
Psychometric Properties ◽  
Content Validity ◽  
Postpartum Women ◽  
Life Questionnaire ◽  
Quality Of Life Questionnaire ◽  
Persian Version ◽  
Confirmatory Factor

Abstract Background and objective Many studies have been conducted in Iran on the postpartum quality of life, and the majority have used the general quality of life questionnaire. With a specific tool in this context, the dimensions of maternal postpartum quality of life can be more accurately determined. The present study was conducted to determine psychometric properties and validate the Persian version of the Maternal Postpartum Quality of Life Questionnaire (MAPP-QOL). Materials and methods The present methodological study was conducted in 2018. The original version of MAPP-QOL was translated into Persian by both forward and backward translation. In a cross-sectional study, the Persian version was completed by 407 eligible postpartum women aged 18 to 47 and living in Tehran. Reliability of the questionnaire was assessed using Cronbach's alpha coefficient and test–retest. For construct validity, exploratory and confirmatory factor analyses were used. Results The MAPP-QOL showed good content validity; content validity ratio (CVR) ranged from 0.6 to 1.00, and content validity index (CVI) ranged from 0.7 to 1.00. Using exploratory factor analysis, five factors, including Socioeconomic; Relational/Family-Friends; Psychological/Baby; Health & functioning; and Relational/Spouse-Partner, were extracted, which together explained 78.84% of the total variance. After modifications of CFA, the confirmatory factor analysis showed an acceptable goodness-of-fit. AVE value Above 0.5 exhibited appropriate convergent validity, and AVE greater than MSV confirmed divergent validity. The Cronbach's alpha, McDonald's Omega, Composite reliability and maximum reliability H of the five extracted factors were excellent (> 0.9). Also, the AIC values of the factors were good (between 0.721 to 0.859). Conclusion The 38-item Persian version of the postpartum quality of life questionnaire is adequately reliable for postpartum women in Iran. Given its appropriate psychometric properties, this scale is fit to be used in future studies on postpartum women.

scholarly journals Validation of Acromegaly Quality of Life Questionnaire (AcroQol) for the Iranian Population

2021 ◽  
Author(s):  
Mina Danaei ◽  
Leyla Bahadorizadeh ◽  
Afsaneh Dehnad ◽  
Shirin Mohamadzadeh ◽  
Nahid Hashemi-Madani ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Internal Consistency ◽  
Content Validity ◽  
Path Coefficient ◽  
Life Questionnaire ◽  
Cronbach’S Alpha ◽  
Quality Of Life Questionnaire ◽  
Cronbach's Alpha ◽  
Psychological Dimensions

Abstract Background: Acromegaly is a chronic disease seriously impacting the patients' quality of life. This study aimed to validate the Acromegaly Quality of Life Questionnaire (AcroQoL) for the Persian-speaking population.Methods: This cross-sectional study recruited 73 Iranian patients with a confirmed diagnosis of acromegaly. The content validity of the scales was evaluated by an expert panel of eight endocrinologists. Construct validity was assessed by using confirmatory factor analysis. Internal consistency was assessed on the basis of Cronbach’s alpha, and a goodness-of-fit (GoF) index was calculated to display whether the model fitted the data.Results: The content validity index (CVI) and content validity ratio (CVR) yielded values of 0.85 and 0.80, respectively. The average variance extracted (AVE) from physical and psychological dimensions was 0.520 and 0.462, respectively, exceeding the minimum criterion of 0.40. Cronbach’s alpha for physical and psychological dimensions equaled 0.868 and 0.866, respectively, indicating the adequate internal consistency of multiple items for each construct. The subscales’ R square and path coefficient were greater than the recommended threshold (physical dimension: 0.778, psychological dimension: 0.873), demonstrating the suitability of this criterion. Finally, the GoF value of 0.29 indicated the model's moderate fit.Conclusions: The findings revealed that the Persian version of AcroQoL is of adequate validity and reliability for evaluating the quality of life of Iranian people with acromegaly.

scholarly journals Psychometric properties of the Persian translation of Maternal Postpartum Quality of Life Questionnaire(MAPP-QOL).

2021 ◽  
Author(s):  
Mokhtarian-Gilani Tahereh ◽  
Gity Ozgoli ◽  
Nourossadat Kariman ◽  
Sharif Nia Hamid ◽  
Mahbobeh Ahmadi Doulabi ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Factor Analysis ◽  
Psychometric Properties ◽  
Content Validity ◽  
Postpartum Women ◽  
Life Questionnaire ◽  
Quality Of Life Questionnaire ◽  
Persian Version ◽  
Confirmatory Factor

Abstract Background and Objective: Many studies have been conducted in Iran on the postpartum quality of life, and the majority have used the general quality of life questionnaire. With a specific tool in this context, the dimensions of maternal postpartum quality of life can be more accurately determined. The present study was conducted to determine psychometric properties and validate the Persian version of the Maternal Postpartum Quality of Life Questionnaire (MAPP-QOL).Materials and Methods: The present methodological study was conducted in 2018. The original version of MAPP-QOL was translated into Persian by both forward and backward translation. In a cross-sectional study, the Persian version was completed by 407 eligible postpartum women aged 18 to 47 and living in Tehran. Reliability of the questionnaire was assessed using Cronbach's alpha coefficient and test-retest. For construct validity, exploratory and confirmatory factor analyses were used.Results: The MAPP-QOL showed good content validity; content validity ratio (CVR) ranged from 0.6 to 1.00, and content validity index (CVI) ranged from 0.7 to 1.00. Using exploratory factor analysis, five factors, including Socioeconomic; Relational/Family-Friends; Psychological/Baby; Health & functioning; and Relational/Spouse-Partner, were extracted, which together explained 78.84% of the total variance. After modifications of CFA, the confirmatory factor analysis showed an acceptable goodness-of-fit. AVE value Above 0.5 exhibited appropriate convergent validity, and AVE greater than MSV confirmed divergent validity. The Cronbach's alpha, McDonald's Omega, Composite reliability and maximum reliability H of the five extracted factors were excellent (>0.9). Also, the AIC values of the factors were good (between 0.721 to 0.859). Conclusion: The 38-item Persian version of the postpartum quality of life questionnaire is adequately reliable for postpartum women in Iran. Given its appropriate psychometric properties, this scale is fit to be used in future studies on postpartum women.

scholarly journals Validation of Acromegaly Quality of Life Questionnaire (AcroQol) for the Iranian Population

2022 ◽  
Author(s):  
Mina Danaei ◽  
Leyla Bahadorizadeh ◽  
Afsaneh Dehnad ◽  
Shirin Mohamadzadeh ◽  
Nahid Hashemi-Madani ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Internal Consistency ◽  
Content Validity ◽  
Path Coefficient ◽  
Life Questionnaire ◽  
Cronbach’S Alpha ◽  
Quality Of Life Questionnaire ◽  
Cronbach's Alpha ◽  
Psychological Dimensions

Abstract Background Acromegaly is a chronic disease seriously impacting the patients' quality of life. This study aimed to validate the Acromegaly Quality of Life Questionnaire (AcroQoL) for the Persian-speaking population. Methods This cross-sectional study recruited 73 Iranian patients with a confirmed diagnosis of acromegaly. The content validity of the scales was evaluated by an expert panel of eight endocrinologists. Construct validity was assessed by using confirmatory factor analysis. Internal consistency was assessed on the basis of Cronbach’s alpha, and a goodness-of-fit (GoF) index was calculated to display whether the model fitted the data. Results The content validity index (CVI) and content validity ratio (CVR) yielded values of 0.85 and 0.80, respectively. The average variance extracted (AVE) from physical and psychological dimensions was 0.520 and 0.462, respectively, exceeding the minimum criterion of 0.40. Cronbach’s alpha for physical and psychological dimensions equaled 0.868 and 0.866, respectively, indicating the adequate internal consistency of multiple items for each construct. The subscales’ R square and path coefficient were greater than the recommended threshold (physical dimension: 0.778, psychological dimension: 0.873), demonstrating the suitability of this criterion. Finally, the GoF value of 0.29 indicated the model's moderate fit. Conclusions The findings revealed that the Persian version of AcroQoL is of adequate validity and reliability for evaluating the quality of life of Iranian people with acromegaly.

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