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.

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 HIT-6 and EQ-5D-5L in patients with migraine: assessment of common latent constructs and development of a mapping algorithm

2021 ◽  
Author(s):  
Ana Sofia Oliveira Gonçalves ◽  
Dimitra Panteli ◽  
Lars Neeb ◽  
Tobias Kurth ◽  
Annette Aigner
Keyword(s):  
Factor Analysis ◽  
Exploratory Factor Analysis ◽  
Controlled Trial ◽  
Ceiling Effect ◽  
Repeated Measurements ◽  
Economic Evaluations ◽  
Floor Effect ◽  
Mapping Algorithm ◽  
Latent Constructs ◽  
Randomised Controlled

Abstract Objective The aims of this study were to assess whether there is a conceptual overlap between the questionnaires HIT-6 and EQ-5D and to develop a mapping algorithm allowing the conversion of HIT-6 to EQ-5D utility scores for Germany. Methods This study used data from an ongoing randomised controlled trial for patients suffering from migraine. We assessed the conceptual overlap between the two instruments with correlation matrices and exploratory factor analysis. Linear regression, tobit, mixture, and two-part models were used for mapping, accounting for repeated measurements, tenfold cross-validation was conducted to validate the models. Results We included 1010 observations from 410 patients. The EQ-5D showed a substantial ceiling effect (47.3% had the highest score) but no floor effect, while the HIT-6 showed a very small ceiling effect (0.5%). The correlation between the instruments’ total scores was moderate (− 0.30), and low to moderate among each domain (0.021–0.227). The exploratory factor analysis showed insufficient conceptual overlap between the instruments, as they load on different factors. Thus, there is reason to believe that the instruments’ domains do not capture the same latent constructs. To facilitate future mapping, we provide coefficients and a variance–covariance matrix for the preferred model, a two-part model with the total HIT-6 score as the explanatory variable. Conclusion This study showed that the German EQ-5D and the HIT-6 lack the conceptual overlap needed for appropriate mapping. Thus, the estimated mapping algorithms should only be used as a last resort for estimating utilities to be employed in economic evaluations.

Impact of Sleeve Gastrectomy on Renal Function in Patients With Morbid Obesity: A One-Year Prospective Cohort Study

2021 ◽  
Author(s):  
Delphine Sanchez ◽  
Amandine Lebrun ◽  
Sosthene Somda ◽  
Panagiotis Lainas ◽  
Hadrien Tranchart ◽  
...  
Keyword(s):  
Morbid Obesity ◽  
Renal Function ◽  
Sleeve Gastrectomy ◽  
Prospective Cohort ◽  
Fat Free Mass ◽  
Disease Epidemiology ◽  
Post Surgery ◽  
Severely Obese ◽  
The Mean ◽  
One Year

Abstract Background. Obesity is an independent risk factor for renal injury. A more favorable metabolic environment following weight loss may theoretically lead to improved renal function. We aimed to evaluate the evolution of renal function one year after sleeve gastrectomy in a large prospective cohort of patients with morbid obesity and assess the influence of fat-free mass (FFM) changes.Patients and Methods. We prospectively included 563 severely obese patients admitted for sleeve gastrectomy. Patients were systematically evaluated one year after surgery. The estimated glomerular filtration rate (eGFR) was calculated using the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation. The FFM was estimated by analyzing computerized tomography (CT) scan sections from CT systematically performed two days and one year after sleeve gastrectomy to detect surgery complications.Results. The mean age was 41.2±0.52 years. The mean body mass index was 43.5±0.3 kg/m2 and 20.4, 30.5, and 30.7% of the included patients had type 2 diabetes, hypertension, and dyslipidemia, respectively. One hundred and fifteen patients were lost to follow-up at one-year post-surgery. The eGFR was significantly lower one year after sleeve gastrectomy than before surgery (87.8±0.9 versus 86.1±0.9, p<0.01). There was no difference in terms of post-surgery FFM loss between patients with an improved eGFR and those without (6.7±0.3 kg versus 6.76±0.5 kg, p=0.9). Furthermore, post-surgery changes in the eGFR did not correlate with the amount of FFM loss (r=0.1, p=0.18).Conclusion. Renal function assessed by eGFR is significantly improved at one-year post-sleeve gastrectomy, independent of changes in skeletal muscle mass.

scholarly journals The Nature of Child-Adult Interaction. From Turn-Taking to Understanding Pointing and Use of Pointing Gestures

2014 ◽  
Vol 18 (2) ◽  
pp. 87-105 ◽  
Author(s):  
Arkadiusz Białek ◽  
Marta Białecka-Pikul ◽  
Małgorzata Stępień–Nycz
Keyword(s):  
Factor Analysis ◽  
Exploratory Factor Analysis ◽  
Joint Attention ◽  
Social Communication ◽  
Complex Behavior ◽  
Communicative Behaviors ◽  
Pointing Gestures ◽  
Turn Taking ◽  
Observational Measure ◽  
One Year

AbstractAnalyses of interactions between an adult and a one-year-old child are often connected with studying early communicative competences, e.g. the child’s participation in turn-taking sequences, in joint attention, and use of pointing gestures. Infants’ communicative behaviors were studied using a structured observational measure - the Early Social Communication Scales (Mundy et al., 2003) in a study of 358 12-month-old children. An exploratory factor analysis revealed: (i) a distinction between the categories of initiation and response among the behaviors displayed, (ii) simple and complex behavior categories occurring; (iii) the presence within one factor of behaviors fulfilling various functions (e.g. requesting and sharing interest). An analysis of the results showed that communicative competences can be classified according to their level and ignoring their function, and made it possible to suggest modifications to the way in which behaviors are coded on the ESCS and to complement the procedure of studying early communicative competences.

scholarly journals Exploratory Factor Analysis of Young’s Internet Addiction Test Among Professionals from India: An Online Survey

2020 ◽  
pp. 025371762093224
Author(s):  
Mamidipalli Sai Spoorthy ◽  
Lokesh Kumar Singh ◽  
Sai Krishna Tikka ◽  
Suchandra Hari Hara
Keyword(s):  
Factor Analysis ◽  
Exploratory Factor Analysis ◽  
Factor Structure ◽  
Internet Addiction ◽  
Online Survey ◽  
Cross Sectional Study ◽  
Online Questionnaire ◽  
Male Population ◽  
Cross Sectional ◽  
The Mean

Background: Internet use has spread across the world due to easy accessibility and affordability. However, it has been creating many problems at several levels. So, there is a need to identify the suitability of psychometric properties and the factor structure of the widely used Internet Addiction Test (IAT) in the Indian settings. Our objective was to perform an exploratory factor analysis on the IAT and to test the reliability of the scale. Methods: It was a cross-sectional study that included various professional groups. We used an online questionnaire that included sociodemographic details and Young’s IAT. Exploratory factor analysis was used to identify the factor structure of Young’s IAT in the Indian setup. Results: The mean age of the sample (N = 1,782) was 27.7 years (SD = 8.74) with a predominantly male population 1040 (58.4%). In total, 1.0% (17) of the sample had significant problems with internet usage, whereas 13% (232) were in the range of frequent/occasional problems, and the mean score on IAT was 32 (SD = 16.42). Exploratory factor analysis revealed two factors that explained 49% of the variance (Kaiser–Meyer–Olkin measure of sampling adequacy: 0.95, Bartlett’s test of sphericity: P = 0.000). They were “mood and relationship issues” and “duration and productivity.” Cronbach’s α was 0.92, which indicates a high level of internal consistency. Conclusion: In Indian settings, IAT can be understood based on the two-factor structure. The scale has excellent reliability. Further studies are needed to replicate these results, by using confirmatory factor analysis and validity testing.

scholarly journals THE FACTOR STRUCTURE OF MEMORY COMPLAINTS OVER TIME

2019 ◽  
Vol 3 (Supplement_1) ◽  
pp. S221-S221
Author(s):  
Jacqueline Mogle ◽  
Nikki Hill ◽  
Sakshi Bhargava ◽  
Tyler Bell ◽  
Emily Whitaker
Keyword(s):  
Factor Analysis ◽  
Exploratory Factor Analysis ◽  
Factor Structure ◽  
Memory Complaints ◽  
Two Factors ◽  
Best Fitting ◽  
One Year ◽  
Fitting Model ◽  
Over Time

Abstract Although memory complaints are assessed with a variety of items to track change in individuals as they age, it remains unclear which items best capture change. Adults aged 70 to 104 (n=1,344, 38% Male) completed six memory complaints items annually for up to 11 years: frequency of problems, one year decline, ten year decline, seriousness of problems, forgetting important things, and current functioning compared to functioning at age 30. Using multilevel exploratory factor analysis, the best fitting model indicated one factor fit the between person structure with all items loading significantly. Across time, items required two factors. Items about decline loaded together while the item about functioning compared to functioning at age 30 dominated a second factor. Remaining items did not load on either factor across time. This suggests these items assessing memory complaints are better at discriminating across persons rather than tracking changes within a person across time.

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