scholarly journals Psychosocial functioning before and after surgical treatment for morbid obesity: reliability and validation of the Norwegian version of obesity-related problem scale

PeerJ ◽  
2015 ◽  
Vol 3 ◽  
pp. e1275 ◽  
Author(s):  
Anny Aasprang ◽  
John Roger Andersen ◽  
Villy Våge ◽  
Ronette L. Kolotkin ◽  
Gerd Karin Natvig
Keyword(s):  
Factor Analysis ◽  
Internal Consistency ◽  
Psychosocial Functioning ◽  
Related Problem ◽  
Ceiling Effect ◽  
Norwegian Version ◽  
Sf 36 ◽  
Physical Scale ◽  
The Mean ◽  
One Year

Background.The aims of this study were to translate the Obesity-Related Problem scale (OP scale) into the Norwegian language and test its reliability, validity and responsiveness in a Norwegian sample.Method.The questionnaire (OP scale) was translated from the original language (Swedish) into Norwegian. Patients completed the questionnaire prior to and one year after sleeve gastrectomy. Internal consistency was evaluated using Cronbach’sα. Construct validity was tested by correlating the OP-scale with the SF-36 and the Cantril Ladder using the Pearson correlation coefficient. An exploratory and confirmatory factor analysis was used to test the unidimensionality of the OP scale. Responsiveness was tested by assessing changes in the OP scale from baseline to one year post-surgery using the paired samplet-test. Floor and ceiling effect were calculated as percentages.Results.A total of 181 patients (123 women) accepted for bariatric surgery was included in the study. The mean age was 43.1 ± 12.5 years, and mean body mass index (BMI) before surgery was 45 ± 6.9. The mean value of the OP scale at baseline was 63.30 ± 24.43 (severe impairment) and 21.01 ± 20.98 at one year follow-up (mild impairment). Internal consistency was high at baseline (Cronbach’sα0.91). The floor effect was small at baseline and high at one year. The ceiling effect was small at baseline and at one year. Exploratory and conformatory factor analysis showed one factor with a high percent of explained variance. Correlations between OP scale at baseline, SF-36, Cantril Ladder and BMI were statistically significant and in the predicted direction to support validity of the Norwegian OP scale. After one year correlations between the change in OP scale and the change in SF-36 scores, Cantril Ladder and BMI were also statistically significant, except for the change in the Role Physical-scale. The OP scale showed greater responsiveness than either the SF-36 or Cantril Ladder.Conclusion.These results confirm that the Norwegian version of the OP scale is a valid and reliable instrument for measuring psychosocial functioning in patients with clinically severe obesity.

scholarly journals Psychosocial functioning before and after surgical treatment for morbid obesity: reliability and validation of the Norwegian version of obesity-related problem scale

2015 ◽  
Author(s):  
Anny Aasprang ◽  
John Roger Andersen ◽  
Villy Våge ◽  
Ronette L Kolotkin ◽  
Gerd Karin Natvig
Keyword(s):  
Factor Analysis ◽  
Exploratory Factor Analysis ◽  
Psychosocial Functioning ◽  
Related Problem ◽  
Ceiling Effect ◽  
Post Surgery ◽  
Norwegian Version ◽  
Sf 36 ◽  
The Mean ◽  
One Year

Background: The aims of this study were to translate the Obesity-Related Problem scale (OP scale) into the Norwegian language and test its reliability, validity and responsiveness in a Norwegian sample. Method: The questionnaire (OP scale) was translated from the original language (Swedish) into Norwegian. Patients completed the questionnaire prior to and one year after sleeve gastrectomy. Internal consistency was evaluated using Cronbach`s α. Floor and ceiling effect were calculated as percentages. Construct validity was tested by correlating the OP-scale with the SF-36 and the Cantril Ladder using the Pearson correlation coefficient. Exploratory factor analysis, using principal component analysis with varimax rotation, was used to test the unidimensionality of the OP scale. Responsiveness was tested by assessing changes in the OP scale from baseline to one year post-surgery using the paired sample t-test. Result: A total of 181 patients (123 women) accepted for bariatric surgery was included in the study. The mean age was 43.1 ± 12.5 years, and mean body mass index (BMI) before surgery was 45 ± 6.9. The mean value of the OP scale at baseline was 63.30 ± 24.43 (severe impairment) and 21.01 ± 20.98 at one year follow-up (mild impairment). Cronbach`s α was high at baseline (0. 91), as well as one year after surgery (0.88). The floor effect was small at baseline and moderate at one year. The ceiling effect was small at baseline and at one year. Exploratory factor analysis showed one factor with a high percent of explained variance (baseline and post-surgery). Correlations between OP scale at baseline, SF-36, Cantril Ladder and BMI were statistically significant and in the predicted direction to support validity of the Norwegian OP scale . After one year correlations between the change in OP scale and the change in SF-36 scores, Cantril Ladder and BMI were also statistically significant, except for the change in the Role Physical-scale. The OP scale showed greater responsiveness than either the SF-36 or Cantril Ladder. Conclusion: These results confirm that the Norwegian version of the OP scale is a valid and reliable instrument for measuring psychosocial functioning in patients with clinically severe obesity.

scholarly journals Psychosocial functioning before and after surgical treatment for morbid obesity: reliability and validation of the Norwegian version of obesity-related problem scale

2015 ◽  
Author(s):  
Anny Aasprang ◽  
John Roger Andersen ◽  
Villy Våge ◽  
Ronette L Kolotkin ◽  
Gerd Karin Natvig
Keyword(s):  
Factor Analysis ◽  
Exploratory Factor Analysis ◽  
Psychosocial Functioning ◽  
Related Problem ◽  
Ceiling Effect ◽  
Post Surgery ◽  
Norwegian Version ◽  
Sf 36 ◽  
The Mean ◽  
One Year

Background: The aims of this study were to translate the Obesity-Related Problem scale (OP scale) into the Norwegian language and test its reliability, validity and responsiveness in a Norwegian sample. Method: The questionnaire (OP scale) was translated from the original language (Swedish) into Norwegian. Patients completed the questionnaire prior to and one year after sleeve gastrectomy. Internal consistency was evaluated using Cronbach`s α. Floor and ceiling effect were calculated as percentages. Construct validity was tested by correlating the OP-scale with the SF-36 and the Cantril Ladder using the Pearson correlation coefficient. Exploratory factor analysis, using principal component analysis with varimax rotation, was used to test the unidimensionality of the OP scale. Responsiveness was tested by assessing changes in the OP scale from baseline to one year post-surgery using the paired sample t-test. Result: A total of 181 patients (123 women) accepted for bariatric surgery was included in the study. The mean age was 43.1 ± 12.5 years, and mean body mass index (BMI) before surgery was 45 ± 6.9. The mean value of the OP scale at baseline was 63.30 ± 24.43 (severe impairment) and 21.01 ± 20.98 at one year follow-up (mild impairment). Cronbach`s α was high at baseline (0. 91), as well as one year after surgery (0.88). The floor effect was small at baseline and moderate at one year. The ceiling effect was small at baseline and at one year. Exploratory factor analysis showed one factor with a high percent of explained variance (baseline and post-surgery). Correlations between OP scale at baseline, SF-36, Cantril Ladder and BMI were statistically significant and in the predicted direction to support validity of the Norwegian OP scale . After one year correlations between the change in OP scale and the change in SF-36 scores, Cantril Ladder and BMI were also statistically significant, except for the change in the Role Physical-scale. The OP scale showed greater responsiveness than either the SF-36 or Cantril Ladder. Conclusion: These results confirm that the Norwegian version of the OP scale is a valid and reliable instrument for measuring psychosocial functioning in patients with clinically severe obesity.

The Italian version of the Unité Rhumatologique des Affections de la Main (URAM) for Dupuytren’s disease: The URAM-I(10)

Hand Therapy ◽  
2021 ◽  
pp. 175899832110345
Author(s):  
E Lanfranchi ◽  
T Fairplay ◽  
P Arcuri ◽  
M Lando ◽  
F Marinelli ◽  
...  
Keyword(s):  
Factor Analysis ◽  
Internal Consistency ◽  
Cultural Adaptation ◽  
Dupuytren’S Disease ◽  
Divergent Validity ◽  
Dupuytren's Disease ◽  
Retest Reliability ◽  
Sf 36 ◽  
High Internal Consistency ◽  
Test Retest Reliability

Introduction Several general hand functional assessment tools for Dupuytren’s disease have been reported, but none of the patient-reported-outcome measures specific to Dupuytren’s disease-associated disabilities are available in the Italian language. The purpose of this study was to culturally adapt the Unité Rhumatologique des Affections de la Main (URAM) into Italian (URAM-I) and determine its measurement properties. Methods Cross-cultural adaptation was performed according to the current guidelines. Construct validity (convergent and divergent validity) was measured by comparing the URAM-I with the Pain-Rated Wrist/Hand Evaluation (PRWHE-I), Short-Form 36 (SF-36-I) scale and finger range of motion, respectively. Factor analysis was used to investigate the URAM-I’s internal structure. Reliability was assessed by internal consistency (Cronbach’s alpha) and test-retest reliability by Intra-Class Correlation Coefficient (ICC). Results This study included 96 patients (males = 85%, age = 66.8 ± 9.3). Due to the cultural adaptation, we divided the original item #1 into two separate items, thus generating the URAM-I(10). Convergent validity analysis showed a strong positive (r = 0.67), significant (p < 0.01) Pearson’s correlation with the PRWHE-I. Divergent validity analysis showed a weak, negative (r < 0.3) and not significant correlation with the SF-36-I subscales, except for the physical pain subscale (r = −0.21, p < 0.05). Factor analysis revealed a 2-factor, 4-item solution that explained 76% of the total variance. The URAM-I(10) demonstrated high internal consistency (α = 0.94) and high test-retest reliability (ICC = 0.97). Conclusion The URAM-I(10) demonstrates moderate construct validity, high internal consistency and test-retest reliability, and showed a 2-factor internal structure. Its evaluative use can be suggested for the Italian Dupuytren’s population.

scholarly journals Japanese Orthopaedic Association Cervical Myelopathy Evaluation Questionnaire (JOACMEQ) in mainland China: an investigation of reliability, validity, and responsiveness

2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Feifei Zhou ◽  
Shuyang Li ◽  
Yilong Zhang ◽  
Yanbin Zhao ◽  
Kevin L. Ju ◽  
...  
Keyword(s):  
Factor Analysis ◽  
Internal Consistency ◽  
Japanese Orthopaedic Association ◽  
Mainland China ◽  
Youden Index ◽  
Retest Reliability ◽  
Five Factors ◽  
External Responsiveness ◽  
The Mean ◽  
Test Retest Reliability

Abstract Background The aim of this study is to investigate the reliability, validity, and responsiveness of JOACMEQ for CSM patients in mainland China. Methods A retrospective review was performed on 91 patients with CSM in our hospital from March 2015 to June 2015. Patients completed the JOACMEQ, the mJOA and the SF-36 questionnaires during the process. Cronbach's α was used to evaluate the internal consistency reliability, and test–retest reliability was checked. An exploratory factor analysis was used to determine the correlations among the JOACMEQ questions and the construct validity. The concurrent validity was assessed by Spearman correlation coefficient. The internal responsiveness was determined by effect sizes and standardized response means. External responsiveness was determined by the area under the receiver operating characteristic curve on the basis of the Youden Index. Results The mean age of patients was 57.61 years old. The mean follow-up was 24 months. JOACMEQ showed a good internal consistency (Cronbach's α, 0.897). Test–retest reliability showing good result (Pearson's correlation, 0.695–0.905). Our data were amenable to factor analysis (KMO = 0.816, Bartlett's test, χ2(45) = 1199.99, p < 0.001), and five factors above 1 were strongly loaded and clustered for each of the five factors. Comparing the scales preoperative to those 2 years postoperative, the average scores of the subscales all increased, and both the ES and SRM showing satisfied responsiveness. In external responsiveness analysis, the recovery rate a appeared to be most responsive to post-operative improvement. Conclusions The Simplified Chinese version of JOACMEQ was well-developed with great reliability and sensitive responsiveness. Our study demonstrated that JOACMEQ has content psychometric properties to identify postoperative improvements in CSM patients.

scholarly journals Lack of cross-cultural validity of the Endometriosis Health Profile-30

2018 ◽  
Vol 10 (2) ◽  
pp. 107-115 ◽  
Author(s):  
Nina Julie Verket ◽  
Marit Helen Andersen ◽  
Leiv Sandvik ◽  
Tom Gunnar Tanbo ◽  
Erik Qvigstad
Keyword(s):  
Factor Analysis ◽  
Construct Validity ◽  
Internal Consistency ◽  
Cross Cultural ◽  
Health Profile ◽  
Cultural Validity ◽  
Self Image ◽  
Norwegian Version ◽  
Test Retest Reliability ◽  
Cultural Validation

Introduction: The Endometriosis Health Profile-30 is a disease-specific patient-reported outcome measure of health-related quality of life. Cross-cultural validation of the Endometriosis Health Profile-30 has been performed for several translated versions. The aim of this study was to evaluate the measurement properties of a Norwegian version Endometriosis Health Profile-30. Methods: This study was designed as a cross-sectional anonymous postal questionnaire study. A total of 157 women with endometriosis were included during a period from 2012 to 2013. Women aged 18–45 years were recruited from the Norwegian Endometriosis Association. Principal components analysis with varimax rotation was used to assess construct validity. Short Form-36 was used to determine convergent validity. Cronbach’s alpha was used to measure internal consistency. Intraclass correlation coefficients and paired t-tests were used to evaluate test–retest reliability. Floor and ceiling effects were estimated. Results: Factor analysis resulted in a three and five-factor model for the core and modular questionnaire, respectively. Factor analysis could not support construct validity of the scales self-image and treatment. The Norwegian version Endometriosis Health Profile-30 demonstrated acceptable internal consistency and test–retest reliability, except for the scale relationship with children. Floor effects were observed for the scales self-image (20.1%), work life (33.9%), relationship with children (34.2%), and medical profession (20.5%). Conclusion: The construct self-image does not seem to be measured appropriately by the Norwegian version Endometriosis Health Profile-30, suggesting a lack of cross-cultural validity of the Endometriosis Health Profile-30. With multinational studies increasing, adequate translation, cross-cultural adaptation, and cross-cultural validation of instruments are essential to ensure equivalence in languages and cultures other than the original.

scholarly journals Cross-cultural adaptation and psychometric validation of the Indonesian version of the Oxford Hip Score

2021 ◽  
Vol 2 (9) ◽  
pp. 765-772
Author(s):  
Jamot Silitonga ◽  
Yoshi Pratama Djaja ◽  
Ismail Hadisoebroto Dilogo ◽  
Ludwig Andribert Powantia Pontoh
Keyword(s):  
Construct Validity ◽  
Internal Consistency ◽  
Cultural Adaptation ◽  
Ceiling Effect ◽  
Cross Cultural ◽  
Hip Pain ◽  
Harris Hip Score ◽  
Cross Cultural Adaptation ◽  
Sf 36 ◽  
Oxford Hip Score

Aims The aim of this study was to perform a cross-cultural adaptation of Oxford Hip Score (OHS) to Indonesian, and to evaluate its psychometric properties. Methods We performed a cross-cultural adaptation of Oxford Hip Score into Indonesian language (OHS-ID) and determined its internal consistency, test-retest reliability, measurement error, floor-ceiling effect, responsiveness, and construct validity by hypotheses testing of its correlation with Harris Hip Score (HHS), vsual analogue scale (VAS), and Short Form-36 (SF-36). Adults (> 17 years old) with chronic hip pain (osteoarthritis or osteonecrosis) were included. Results A total of 125 patients were included, including 50 total hip arthroplasty (THA) patients with six months follow-up. The OHS questionnaire was translated into Indonesian and showed good internal consistency (Cronbach’s alpha = 0.89) and good reliability (intraclass correlation = 0.98). The standard error of measurement value of 2.11 resulted in minimal detectable change score of 5.8. Ten out of ten (100%) a priori hypotheses were met, confirming the construct validity. A strong correlation was found with two subscales of SF-36 (pain and physical function), HHS (0.94), and VAS (-0.83). OHS-ID also showed good responsiveness for post-THA series. Floor and ceiling effect was not found. Conclusion The Indonesian version of OHS showed similar reliability and validity with the original OHS. This questionnaire will be suitable to assess chronic hip pain in Indonesian-speaking patients. Cite this article: Bone Jt Open 2021;2(9):765–772.

The Minneapolis-Manchester Quality of Life Instrument (MMQL): Reliability and validity of the Adult Form (AF).

2013 ◽  
Vol 31 (15_suppl) ◽  
pp. 9570-9570
Author(s):  
Alysia Bosworth ◽  
Elizabeth L. Goodman ◽  
Eric Wu ◽  
Liton Francisco ◽  
Leslie L. Robison ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Factor Analysis ◽  
Cancer Survivors ◽  
Childhood Cancer ◽  
Internal Consistency ◽  
Childhood Cancer Survivors ◽  
Healthy Controls ◽  
P Values ◽  
Sf 36

9570 Background: Cancer survivors are at risk for deficits in health-related quality of life (HRQL). Youth (8-12y) and adolescent (13-20y) versions of the MMQL have been developed to address survivor-specific issues and are currently in use; the MMQL-AF has now been developed to assess HRQL in cancer survivors aged 21-55y, enabling cross-sectional and longitudinal assessment of childhood cancer survivors as they age. Methods: The MMQL-AF was administered to 499 adults: 65 patients undergoing cancer therapy, 107 off therapy, 327 healthy controls (matched on sex, age, education). Factor analysis was performed; items with factor loadings ≥0.40 were retained. The following psychometric properties were evaluated: internal consistency reliability (Cronbach’s alpha), construct validity (concurrent administration of SF-36), known-groups validity (score comparisons across the 3 groups), and stability (intraclass correlations from patients completing MMQL-AF twice, 2 weeks apart). Results: Among patients, 46% had hematological malignancies, 33% were males, 64% were non-Hispanic whites; median age was 40y. Factor analysis resulted in retention of 44 items across 6 scales: social functioning (n=9), physical functioning (n=12), cognitive functioning (n=7), outlook on life (n=4), body image (n=5), and psychological functioning (n=7).Internal consistency was 0.8-0.9 for scales and 0.95 overall.The MMQL-AF distinguished between known groups; healthy controls scored significantly higher (better HRQL) than patients on 4 of 6 scales. Off-therapy patients scored higher than on-therapy patients on physical functioning.The MMQL-AF scales correlated highly with SF-36 scales hypothesized to tap similar domains (all P values <0.001), demonstrating construct validity.Intraclass correlations were 0.82-0.95 for scales and 0.98 overall (all P values <0.001), indicating high stability. Conclusions: MMQL-AF is a reliable and valid self-report instrument for measuring multi-dimensional HRQL in cancer survivors aged 21-55y. Development of this instrument ensures availability of a tool that can assess HRQL from 8-55y, thus addressing needs of childhood cancer survivors as they age.

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