Reliability and Internal Consistency of the Spanish Version for Colombia of the Western Ontario Rotator Cuff Index (WORC)

Background: The Western Ontario Rotator Cuff Index (WORC) is an assessment tool developed to evaluate quality of life in patients with rotator cuff disease (RCD). The purpose of this study is to translate the WORC index into Spanish and to evaluate its reproducibility and internal consistency in patients with RCD. Methods: Following guidelines from literature, the WORC index was translated. Sixty patients with RCD were asked to complete the questionnaire. To evaluate reliability, they were asked to answer it for a second time within the next 14 days. The Cronbach’s α (CA) and the intraclass correlation coefficient (ICC) were calculated to determine test-retest reliability and internal consistency. Bland-Altman plot and reliable change index (RCI) were used to evaluate measurement error. Results: Cronbach’s α was 0.96 for the total WORC score (ranges 0.85-0.94 for the five domains).Excellent test-retest reliability was seen with an ICC of 0.98, with the domains ranging between 0.91-0.97. The Bland-Altman plot showed no systematic differences, and the RCI for the total WORC index was 7.6%. Conclusion: The Spanish version of the WORC index is a valid and reliable tool for evaluating quality of life in patients with RCD and may be used in Spanish speaking countries like Colombia. Level of evidence: Basic Science Study, Development or Validation of Outcomes Instruments/Classification Systems.

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

European Psychiatry ◽

10.1016/s0924-9338(98)80010-2 ◽

1998 ◽

Vol 13 (5) ◽

pp. 231-234 ◽

Cited By ~ 28

Author(s):

L Hansson ◽

B Svensson ◽

T Björkman

Keyword(s):

Quality Of Life ◽

Internal Consistency ◽

Social Relations ◽

Mentally Ill ◽

Well Being ◽

Swedish Version ◽

Cross Sectional ◽

Retest Reliability ◽

Test Retest Reliability

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

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

The Cleft Palate-Craniofacial Journal ◽

10.1177/1055665619846763 ◽

2019 ◽

Vol 56 (9) ◽

pp. 1195-1205 ◽

Cited By ~ 2

Author(s):

Rafael Denadai ◽

Cassio Eduardo Raposo-Amaral ◽

Anelise Sabbag ◽

Rafael Andrade Ribeiro ◽

Celso Luiz Buzzo ◽

...

Keyword(s):

Quality Of Life ◽

Construct Validity ◽

Internal Consistency ◽

Reliability And Validity ◽

Brazilian Portuguese ◽

Velopharyngeal Insufficiency ◽

Retest Reliability ◽

Related Quality ◽

Test Retest Reliability

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

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

10.21203/rs.3.rs-1181254/v1 ◽

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.

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

Multiple Sclerosis International ◽

10.1155/2020/4652439 ◽

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.

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Development of Chinese Versions of Quality of Life in Late-Stage Dementia and Cognitive Tests for Severe Dementia

Dementia and Geriatric Cognitive Disorders Extra ◽

10.1159/000511703 ◽

2020 ◽

pp. 172-181

Author(s):

Suet-Lai Leung ◽

Hiroyuki Tanaka ◽

Timothy C.Y. Kwok

Keyword(s):

Quality Of Life ◽

Older Adults ◽

Internal Consistency ◽

Interrater Reliability ◽

Severe Dementia ◽

Good Test ◽

Retest Reliability ◽

Chinese Older Adults ◽

Test Retest Reliability

Introduction: Valid assessments of quality of life (QoL) and cognition are important in caring for individuals with severe dementia; there is an urgent need for validated assessment tools for specific populations. This study aimed to develop and validate Chinese versions of the Quality of Life in Late-Stage Dementia (QUALID-C) scale and the Cognitive Test for Severe Dementia (CTSD-C) for Chinese older adults. Methods: This was a cross-sectional validation study comprised of 93 Chinese older adults with severe dementia recruited from 6 residential homes. The content and cultural validity of the QUALID-C and CTSD-C were evaluated by a 7-member expert panel, and interrater reliability, test-retest reliability, internal consistency, concurrent validity, and factorial structure were examined. Results: The QUALID-C showed acceptable internal consistency (Cronbach α = 0.65), good interrater reliability (intraclass correlation coefficient [ICC] = 0.99), and good test-retest reliability (ICC = 0.96). Principal component analysis yielded 3 factors; the items loaded on the factors were comparable to those in previous studies and suggested the scale’s multidimensionality to measure QoL. The CTSD-C showed satisfactory internal consistency (Cronbach α = 0.862), good interrater reliability (ICC = 0.99), and good test-retest reliability (ICC = 0.958). Principal component analysis yielded 3 factors; the items loaded on factors 1 and 2 resembled the items of the automatic response and attentional control factors of the original study. Conclusion: The QUALID-C and the CTSD-C are reliable and valid scales to measure the QoL and cognitive functions of Chinese older adults with severe dementia. These assessments can be utilized to evaluate the effectiveness of treatment and future research work.

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Psychometric Evaluation of the Taiwanese Version of the Western Ontario Rotator Cuff Index

10.21203/rs.3.rs-877923/v1 ◽

2021 ◽

Author(s):

Kuo-Min Chu ◽

Hsiao-Li Ma ◽

Li-Hwa Lin ◽

Hsiu-Chu Hsu ◽

Shiow-Ching Shun

Keyword(s):

Quality Of Life ◽

Rotator Cuff ◽

Psychometric Properties ◽

Rotator Cuff Tear ◽

Internal Consistency ◽

Pain Group ◽

Cuff Tear ◽

Western Ontario Rotator Cuff ◽

Group Validity

Abstract Background: The Western Ontario Rotator Cuff (WORC) index is a self-report questionnaire that measures the disease-specific quality of life in patients with rotator cuff injuries. The aim of this study was to evaluate the psychometric properties of the Taiwanese version of WORC (T-WORC) in patients with rotator cuff tear (RCT) before surgery. Methods: A cross-sectional study design was used. The study was composed of two phases: translation of the WORC into Taiwanese version of WORC, and 210 patients with rotator cuff tear before surgery completed the questionnaire twice within 2 weeks. The main outcome measures included reliability and validity. Reliability was assessed with internal consistency and test-retest. Internal consistency was assessed using the Cronbach’s alpha and test-retest reliability was assessed using the intraclass correlation coefficient (ICC). Construct validity was evaluated by examining convergent, divergent, known-group validity, and exploratory factor analysis (EFA). Results: The T-WORC demonstrated satisfactory reliability with the Cronbach's alpha of .94, and ICC (2 week-interval) of .79. The convergent validity showed that the T-WORC was significantly positively correlated with the disability of the arm, shoulder, and hand and numerical rating scales of pain, but negatively correlated with the Short Form-12. The divergent validity was shown by the low correlation between T-WORC and state anger scale. The known-group validity showed a significant difference between the high pain group and the low pain group. The EFA revealed 4 factors, daily activities and function, physical symptoms, emotion, and shoulder clicking and recreation, which explained 66.13 % of the variance. Conclusions: The findings of this study did not support the 5-domain structure proposed by the original version. Nevertheless, the T-WORC still demonstrated adequate psychometric properties and could be a useful instrument for assessing the RCT patients' quality of life before surgery.

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

Asian Biomedicine ◽

10.1515/abm-2018-0005 ◽

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.

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Validity and Reliability of the Thai Version of the Thyroid-Related Patient-Reported Outcome—A Thyroid-specific Quality of Life Questionnaire

International Archives of Otorhinolaryngology ◽

10.1055/s-0040-1701270 ◽

2020 ◽

Author(s):

Patorn Piromchai ◽

Supachat Chaiudomsom ◽

Pattaramon Wijakkanalan ◽

Torquil Watt

Keyword(s):

Quality Of Life ◽

Internal Consistency ◽

Patient Reported Outcome ◽

Face Validity ◽

Retest Reliability ◽

Patient Reported ◽

The Face ◽

Test Retest Reliability ◽

Benign Thyroid

Abstract Introduction The Thyroid-Related Patient-Reported Outcome (ThyPRO) is a new thyroid-specific quality of life patient-reported outcome measure for benign thyroid disorders. Objective The objective of this study was to investigate the face validity, internal consistency, and test-retest reliability of the Thai version of the ThyPRO (ThyPROth). Methods The translation of the ThyPRO questionnaire was performed using double forward translation, reconciliation, single backward translation, and cognitive debriefing, followed by a panel review. Five thyroid patients evaluated the face validity. The internal consistency and test-retest reliability were evaluated in 30 patients with thyroid diseases. Results The overall validity score was 3.75 (range 0–4). The Cronbach α coefficient ranged from 0.76 to 0.95, with a total coefficient of 0.97 (95% CI 0.962–0.959), indicating excellent internal consistency. The test-retest reliability coefficient ranged from 0.70 to 0.97. All values were 0.70 and above. The total reliability coefficient was 0.86 (95% CI 0.724–0.932), indicating excellent reliability. Conclusion The ThyPROth was found to be valid and to exhibit good internal consistency and test-retest reliability. The questionnaire is ready for implementation in the assessment of health-related quality of life in Thai patients with benign thyroid diseases.

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

Health and Quality of Life Outcomes ◽

10.1186/s12955-021-01694-z ◽

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.

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Arabic translation and validation of the Sinus and Nasal Quality of Life Survey (SN-5) in pediatric patients with chronic rhinosinusitis

The Egyptian Journal of Otolaryngology ◽

10.1186/s43163-021-00140-7 ◽

2021 ◽

Vol 37 (1) ◽

Author(s):

Ahmed A. Ragab ◽

Zeinab A. Kasemy ◽

Ahmad M. Hamdan

Keyword(s):

Quality Of Life ◽

Construct Validity ◽

Chronic Rhinosinusitis ◽

Internal Consistency ◽

External Validity ◽

Control Groups ◽

Retest Reliability ◽

Test Retest Reliability ◽

And Control

Abstract Background This study aimed to validate the translation of the Sinus and Nasal Quality of Life Survey (SN-5) into Arabic (SN-5a) in pediatric chronic rhinosinusitis (CRS) patients. A prospective cohort randomized controlled study was conducted on 129 children with CRS and 100 age- and sex-matched healthy children. The questionnaire was translated into the Arabic language with cross-cultural adaptation. Caregivers answered the questionnaire during their first visits and after 1 week; to assess test–retest reliability and after 2 weeks of medical treatment to test the questionnaire’s ability to detect changes in patients’ symptoms. The responses of the patients and control groups were compared to assess the external validity. Results The SN-5a showed internal consistency and reliability, with Cronbach’s alpha value being 0.69. Item–item and item–total correlation analysis showed adequate construct validity with a highly significant negative correlation between the SN-5 questionnaire items and visual analog scale (VAS) (p < 0.001). There were highly significant positive correlations between items of the questionnaire in the 1st and 2nd visits at 1 week (p < 0.001). A highly significant difference between the case and control groups had been shown for all SN-5a items (p < 0.001). Two weeks after treatment, there were large changes in all the questionnaire items between the first and last visits (effect size > 0.8 for all). Conclusion The translated SN-5a exhibited adequate construct validity, internal consistency, test–retest reliability, and external validity with quite enough ability to assess the longitudinal changes of the disease.

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