scholarly journals An Investigation of the Factor Structure of the Persian Version of the Dysphagia Handicap Index

2020 ◽  
Vol 7 (4) ◽  
Author(s):  
Ebrahim Barzegar Bafrooei ◽  
Seyyed Ahmadreza Khatoonabadi ◽  
Saman Maroufizadeh ◽  
Jalal Bakhtiyari ◽  
Ali rajaee
Keyword(s):  
Quality Of Life ◽  
Factor Analysis ◽  
Factor Structure ◽  
Oropharyngeal Dysphagia ◽  
Retest Reliability ◽  
Cronbach's Alpha ◽  
Persian Version ◽  
Dysphagia Handicap Index ◽  
Test Retest Reliability

Background: Oropharyngeal dysphagia harms all aspects of a person’s life, including behaviors, activities, and social situations. Quality of life is a multidimensional concept. The dysphagia handicap index (DHI) is a patient-reported outcomes tool that evaluates the different dimensions of quality of life in three physical, emotional, and functional factors in English-speaking countries. The validity of the Persian version of the dysphagia handicap index (DHI) has been evaluated in a study, but the reliability and factor analysis of the Persian version has not been investigated in any study. Objectives: This study aimed to investigate the factor structure analysis and reliability of the Persian version of the dysphagia handicap index (P-DHI). Methods: In this cross-sectional study, 100 patients with oropharyngeal dysphagia (mean age 55.69 ± 15.04, 53 women) completed the dysphagia handicap index (DHI). The severity of dysphagia was defined as follows: 1 for no dysphagia (normal), 2 and 3 for mild, 4, and 5 for moderate and 6 and 7for severe. Construct validity was examined by confirmatory factor analysis (CFA). Cronbach’s alpha and intraclass correlation coefficient (ICC) were performed to evaluate the internal consistency and test-retest reliability of the P-DHI, respectively. Results: The results of CFA provided support for a second-order three-factor model of P-DHI (χ2 = 484.61, df = 273, (P = 0.0001), χ2/df = 1.77; CFI = 0.901; RMSEA = 0.088 and SRMR = 0.010). The Cronbach’s alpha for physical, functional, and emotional subscales and total score were 0.751, 0.836, 0.773, and 0.900, respectively. The test-retest reliability of the P-DHI for the total score and subscales was high (ICC: 0.952 - 0.988). Furthermore, a significant relationship was found between the P-DHI total score and self-reported severity of dysphagia (P = 0.0001), while there were no relationships between P-DHI total score and age (P = 0.223), sex (P = 0.936), level of education (P = 0.113), disease duration (P = 0.126). Conclusions: The P-DHI is a reliable and valid instrument for assessing the disabling effects of swallowing disorders on the one’s Quality of Life in Iranian patients with oropharyngeal dysphagia due to a variety of diseases. Also, the CFA findings provide support for the tree-factor structure of the P-DHI and the use of the subscales as distinct variables.

scholarly journals Cross-Cultural Adaptation and Validation of the Italian Version of the Dysphagia Handicap Index (I-DHI)

Dysphagia ◽  
2021 ◽  
Author(s):  
Daniela Ginocchio ◽  
Aurora Ninfa ◽  
Nicole Pizzorni ◽  
Christian Lunetta ◽  
Valeria Ada Sansone ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Construct Validity ◽  
Intraclass Correlation ◽  
Oropharyngeal Dysphagia ◽  
Life Questionnaire ◽  
Retest Reliability ◽  
Dysphagia Handicap Index ◽  
Test Retest Reliability ◽  
Healthy Participants

AbstractThe Dysphagia Handicap Index (DHI) is a valid Health-related Quality of Life (HRQOL) questionnaire for patients with oropharyngeal dysphagia (OD) of heterogeneous etiologies. The study aimed at crossculturally translating and adapting the DHI into Italian (I-DHI) and analyzing I-DHI reliability, validity, and interpretability. The I-DHI was developed according to Beaton et al. 5-stage process and completed by 75 adult OD patients and 166 healthy adults. Twenty-six patients filled out the I-DHI twice, 2 weeks apart, for test–retest reliability purposes. Sixty-two patients completed the Italian-Swallowing Quality of Life Questionnaire (I-SWAL-QoL) for criterion validity analysis. Construct validity was tested comparing I-DHI scores among patients with different instrumentally assessed and self-rated OD severity, comparing patients and healthy participants and testing Spearman’s correlations among I-DHI subscales. I-DHI interpretability was assessed and normative data were generated. Participants autonomously completed the I-DHI in maximum 10 min. Reliability proved satisfactory for all I-DHI subscales (internal consistency: α > .76; test–retest reliability: intraclass correlation coefficient > .96, k = .81). Mild to moderate correlations (− .26 ≤ ρ ≤ − .72) were found between I-DHI and I-SWAL-QoL subscales. Construct validity proved satisfactory as (i) moderate to strong correlations (.51 ≤ ρ ≤ .90) were found among I-DHI subscales; (ii) patients with more severe instrumentally or self-assessed OD reported higher I-DHI scores (p < .05); and (iii) OD patients scored higher at I-DHI compared to healthy participants (p < .05). Interpretability analyses revealed a floor effect for the Emotional subscale only and higher I-DHI scores (p < .05) for healthy participants > 65 years. In conclusion, the I-DHI is a reliable and valid HRQOL tool for Italian adults with OD.

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 Development and Validation of a Scale to Measure Religious and Spiritual Support in Sri Lankan Patients with Cancer

2022 ◽  
Author(s):  
Eranthi Weeratunga ◽  
Chandanie Senadheera ◽  
Manjula Hettiarachchi ◽  
Bilesha Perera
Keyword(s):  
Quality Of Life ◽  
Sri Lanka ◽  
Cancer Patients ◽  
Internal Consistency ◽  
Spiritual Support ◽  
Retest Reliability ◽  
Patients With Cancer ◽  
Cronbach's Alpha ◽  
Test Retest Reliability

Abstract Background: Religious and spiritual support (RSS) is considered a vital method of coping among patients with cancer and cancer survivors. Measuring religion and spiritual support received by cancer patients has very little evidence in Sri Lanka compared to the western countries. It would be affected on cancer care management and speedy recovery process of cancer patients; could be benefited to reduce long-term suffering of patients with cancer. This study aimed to develop and validate a tool to measure religion and spiritual support in patients with cancer. Methods: WHO guidelines were incorporated into the cross-cultural adaptation of the newly developed religious and spiritual support scale (RSSS). Internal consistency for the overall RSSS was investigated using Cronbach’s alpha. Intra-class correlation coefficient (ICC) was used to examine the test-retest reliability of the RSSS for the same sample. Validity was checked using convergent and divergent validity. Principal component analysis (PCA) was performed to test factorial/construct validity.Results: The Sinhalese version of RSSS showed a high internal consistency (Cronbach’s alpha-0.883). The scale revealed favourable test-retest reliability (ICC = 0.981). The overall RSSS score correlated negatively and positively with depressive symptoms (r= - 0.338, p<0.05) and quality of life scores; overall (r=0.421, p<0.001), physical (r=0.340, p<0.05), psychological (r=0.279, p=0.08), social (r=0.373, p<0.05) and environmental quality of life (r=0.429, p<0.001) confirming satisfactory divergent and convergent validity of the Sinhalese version of the RSSS. Factor analysis with PCA extracted two factors explaining 74.47% of the variance.Conclusions: The Sinhalese version of RSSS is a reliable and valid scale to assess the religious and spiritual support of patients with cancer in Sri Lanka.

scholarly journals Evaluation of Lower Urinary Tract Dysfunction Impact on Quality of Life in Multiple Sclerosis Patients: Russian Translation and Validation of SF-Qualiveen

2020 ◽  
Vol 2020 ◽  
pp. 1-5
Author(s):  
Ekaterina S. Philippova ◽  
Igor V. Bazhenov ◽  
Alexander V. Ziryanov ◽  
Ekaterina Y. Moskvina
Keyword(s):  
Quality Of Life ◽  
Multiple Sclerosis ◽  
Neurogenic Bladder ◽  
Internal Consistency ◽  
External Validity ◽  
Retest Reliability ◽  
Cronbach's Alpha ◽  
Russian Version ◽  
Test Retest Reliability

The Short Form Qualiveen (SF-Qualiveen) is an 8-item version of the Qualiveen questionnaire used to evaluate the impact of urinary symptoms on the quality of life in patients with urological dysfunction due to neurological disorders. The questionnaire was never available in the Russian language before. The study is aimed at providing the translation, cultural adaptation, and validation of a Russian version of the SF-Qualiveen for the use in patients with multiple sclerosis (MS). Materials and Methods. The original English language version of the SF-Qualiveen was translated into Russian according to the cultural and linguistic adaptation algorithm. The participants (50 MS patients with neurogenic bladder and 10 relatively healthy volunteers) filled out the finalized Russian version of the SF-Qualiveen and the Neurogenic Bladder Symptom Score (NBSS) twice, 2 weeks apart. The data obtained was used to determine the internal consistency (Cronbach’s alpha), external validity (the Spearman correlation), and test-retest reliability (intraclass correlation coefficient (ICC)) of the questionnaire. Results. The mean SF-Qualiveen total score was 2.51±0.79 in patients with a neurogenic bladder and 0.1±0.02 in the control group (p<0.001). Cronbach’s alpha exceeded 0.9 indicating an excellent internal consistency of the questionnaire. The retest did not reveal any significant differences between the findings. The test-retest reliability was good for all items and domains (ICC 0.81-0.89). The total score demonstrated the highest ICC (0.89). The external validity was verified by a strong correlation demonstrated between the SF-Qualiveen and NBSS scores. Conclusions. The Russian SF-Qualiveen questionnaire is a reliable, valid, and consistent tool for the assessment of a urinary disorder impact on the quality of life in patients with MS.

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 The HEAR-QL: Quality of Life Questionnaire for Children with Hearing Loss

2011 ◽  
Vol 22 (10) ◽  
pp. 644-653 ◽  
Author(s):  
Amy M. Umansky ◽  
Donna B. Jeffe ◽  
Judith E.C. Lieu
Keyword(s):  
Quality Of Life ◽  
Hearing Loss ◽  
Factor Structure ◽  
Normal Hearing ◽  
Cutoff Score ◽  
Retest Reliability ◽  
Hearing Device ◽  
Children With Hearing Loss ◽  
Test Retest Reliability

Background: Few quality of life (QOL) assessment tools are available for children with specific chronic conditions, and none have been designed specifically for children with hearing loss (HL). A validated hearing-related QOL questionnaire could help clinicians determine whether an intervention is beneficial and whether one intervention is better than another. Purpose: To examine QOL in children with HL and assess the validity, reliability, and factor structure of a new measure, the Hearing Environments and Reflection on Quality of Life (HEAR-QL) questionnaire. Research Design: A descriptive and correlational study of a convenience sample of children. Study Sample: Participants included 35 children with unilateral HL, 45 with bilateral HL, and 35 siblings with normal hearing. Data Collection and Analysis: Children 7–12 yr old were recruited by mail from a tertiary-care pediatric otolaryngology practice and the local county's Special School District. With parent consent, children completed the validated Pediatric Quality of Life Inventory™ (PedsQL) 4.0 and a 35-item HEAR-QL questionnaire. The factor structure of the HEAR-QL was determined through principal components analysis (PCA), and mean scores were computed for each subscale and the total HEAR-QL. Three weeks following the return of the initial questionnaires, a second HEAR-QL questionnaire was sent to participants to assess test–retest reliability. Both PedsQL and HEAR-QL scores were compared between children with and without HL, between children with unilateral and bilateral HL, and between children who used and did not use a hearing device using analysis of variance. Sensitivity and specificity were calculated for both the HEAR-QL and the PedsQL. A multivariable, hierarchical linear regression analysis was conducted with independent variables associated with the HEAR-QL in unadjusted tests. Results: Using exploratory PCA, the 35-item HEAR-QL was reduced to 26 items (Cronbach's α = 0.97, sensitivity of 91% and specificity of 92% at a cutoff score of 93.5) loading on three factors: difficulty hearing in certain environments/situations (Environments α = 0.97), impact of HL on social/sports activities (Activities α = 0.92), and impact of HL on child's feelings (Feelings α = 0.88). Sensitivity of 78.8% and specificity of 30.9% at a cutoff score of 69.6 on the PedsQL (at risk for impaired QOL) were lower than for the HEAR-QL. Participants with HL reported significantly lower mean total HEAR-QL scores (71 [SD 18] vs. 98 [SD 5], p < .001), but not mean total PedsQL scores (77 [SD 14] vs. 83 [SD 15], p = .47), than participants with normal hearing. Among children with bilateral HL, children who used a hearing device reported lower mean total HEAR-QL scores (p = .01), but not mean total PedsQL scores (p = .55), than children who did not use a hearing device. The intraclass correlation coefficient for test–retest reliability for the 26-item HEAR-QL total score was 0.83. Hearing status and use of a device were independently associated with the HEAR-QL, and the variables in the model accounted for 46% of the HEAR-QL total score variance. Conclusions: The HEAR-QL appears to be a valid, reliable, and sensitive questionnaire for children with HL. The HEAR-QL was better able than the PedsQL to distinguish between children with and without HL and can help evaluate interventions for children with HL.

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

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.

scholarly journals THE SITUATION OF THE QUALITY OF LIFE OF STUDENTS IN PREVENTIVE MEDICINE AT THAI NGUYEN UNIVERSITY OF MEDICINE AND PHARMACY

2021 ◽  
Vol 62 (4) ◽  
Author(s):  
Dinh Thi Thuy Linh ◽  
Nguyen Viet Quang ◽  
To Thi Ngoc Anh ◽  
Vu Thi Anh
Keyword(s):  
Quality Of Life ◽  
Preventive Medicine ◽  
Current Situation ◽  
Life Assessment ◽  
Cronbach’S Alpha ◽  
Retest Reliability ◽  
Cronbach's Alpha ◽  
Test Retest Reliability

Objectives: To describe the current situation of the quality of life of students in preventive medicineat Thai Nguyen University of Medicine and Pharmacy in 2020.Subjects and methods: research was conducted according to over 189 students specialized inpreventive medicine - Thai Nguyen University of Medicine and Pharmacy with the EQ-5D-5Lquality of life assessment toolkit.Results: The test-retest reliability of the EQ-5D-5L was good with Cronbach’s alpha =0,728. Themean EQ-5D-5L were 0,93. The rate of all aspects was good, accounting for 55.6%. There was arelationship between the number of year student and quality of life (p <0.05).

scholarly journals Translation and Psychometric Evaluation of the Persian Version of Lupus Erythematosus Quality of Life Questionnaire (LEQoL)

2021 ◽  
Author(s):  
Seyed Majid Ahmadi ◽  
Zeinab Rezaie ◽  
Seyed Mojtaba Ahmadi ◽  
Sajad Raisi ◽  
Mohammadreza Davoudi
Keyword(s):  
Quality Of Life ◽  
Factor Analysis ◽  
Lupus Erythematosus ◽  
Life Questionnaire ◽  
Quality Of Life Questionnaire ◽  
Persian Version ◽  
Sf 36 ◽  
Test Retest Reliability ◽  
Iranian Patients

Abstract Background: Recently a comprehensive and multi-diversionary scale for assessing Quality of Life (QoL) in Patients with Lupus has been developed. This study aimed to evaluation psychometric properties of the Persian version of Lupus Erythematosus Quality of Life Questionnaire (LEQoL) in Iranian patients with Lupus Erythematosus.Method: We used the forward-backward translation, and cognitive interview for linguistic translation. A cross-sectional design was utilized. We recruited a convenience sample of 165 lupus patients aged 19 years or over from the Iranian social media and Tehran city rheumatology clinics. Patients completed the 36-Item Short Form Survey (SF-36), The Symptom Checklist-90-R (SCL-90-R), and the translated LEQoL. The psychometric properties of the LEQoL were examined to establish test-retest reliability, internal consistency with Cronbach's alpha coefficient (COA), divergent-convergent validity, and construct validity. Also, we used Confirmatory factor analysis (CFA) and exploratory factor analysis (EFA) for assessing factor structures.Results: The total COA was α = 0.86. All subscales internal consistency ranging from 0.85–0.94. The findings of test-retest reliability for the overall scale was 0.93 and the subscales ranging between 0.82–0.92. The results from a CFA indicated that goodness‐of‐fit are satisfactory (χ2/df = 1.28, RMSEA = 0.042, CFI = 0.975). Also EFA showed that the Persian version of LEQoL with five-factor can explain 73.7% of the variances. For assessing validity, every factor of LEQoL has a correlation with some SF.36 and SCL-90-R subscales. This matrix indicates that the LEQoL subscales are somewhat independent, and this matter is one strength issue. Only depression (SCL-90 subscale) has a significant correlation with all LEQoL subscales.Conclusion: The translated Persian version of the LEQoL is a suitable scale for assessing QoL in Iranian patients with lupus.

scholarly journals Validity and reliability of the Persian version of the oropharyngeal Mucositis quality of life scale

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Fatemeh Sadat Hasheminasab ◽  
Mona Pourpasha ◽  
Azizallah Dehghan ◽  
Mahboubeh Yari Galousalari ◽  
Seyed Mehdi Hashemi ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Factor Analysis ◽  
Oral Mucositis ◽  
Life Questionnaire ◽  
Validity And Reliability ◽  
Cronbach’S Alpha ◽  
Cronbach's Alpha ◽  
Persian Version ◽  
Oropharyngeal Mucositis

Abstract Background Oral mucositis is one of the serious complications of chemotherapy and/or radiotherapy that significantly affects the quality of patients’ life. The Oropharyngeal Mucositis-Specific Quality-of-Life questionnaire (OMQoL) is an acceptable instrument for measuring the quality of life in these patients. The aim of this study was to evaluate the validity and reliability of the Persian version of OMQoL questionnaire. Methods This study was a cross-sectional and multi-centric research. After translation from English to Persian, back translation, and cultural adaptation, the Persian version of the questionnaire was prepared. One hundred forty-four patients suffering from oral mucositis referred to three different university affiliated hospitals related to Zahedan, Kerman and Tehran Universities of Medical Sciences, were participated in this study. Then the questionnaire was completed by trained interviewers. The reliability was assessed by Cronbach’s alpha coefficient, and validity was measured through factor analysis, and construct validity (including discriminant validity, and convergent validity) methods. Results Cronbach's alpha in all dimensions was higher than 0.9 that indicated a perfect internal consistency. The results of factor analysis indicated that the dimensions specified in the Persian version were the same as the original version (Factor loading of all items > 0.4). The correlation coefficient for all items was more than 0.75, and the convergence validity was 100% in all dimensions. Conclusion The results of this study showed that the reliability, and validity of Persian version of OMQoL were acceptable, which can be used to measure the quality of life in patients with oral mucositis.

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