scholarly journals The Internet Addiction Test: Factor structure, measurement invariance, and psychometric properties of a six-item version among Spanish women with eating disorders

Author(s):  
Amira Mohammed Ali ◽  
Amin Omar Hendawy ◽  
Hiroshi Kunugi

Abstract Background: Eating disorders and internet addiction are widespread conditions that have considerably increased because of the current lockdown. Their comorbidity is frequently undiscovered, which may increase patients’ distress and hamper recovery. Identifying the constructs of internet addiction may facilitate its detection and management. The Internet Addiction Test is widely used to evaluate internet addiction among students and healthy adults, with less agreement on its dimensional structure.Objectives: To examine the structure of the Internet Addiction Test and its invariance among patients with eating disorders.Methods: In this cross-sectional study, exploratory and confirmatory factor analyses evaluated the structure of the Internet Addiction Test among 123 women with eating disorders (59 women with anorexia nervosa (group 1) and 64 women with other eating disorders (group 2)) recruited from the General University Hospital of Ciudad Real between February and November 2018. Multigroup analysis examined invariance of the Internet Addiction Test across eating disorder groups, and correlation with the Bergen Facebook Addiction Scale examined its criterion validity.Results: One factor explained 83.4%, 74.4%, and 87.4% of the variances in the whole sample, group 1, and group 2, with excellent reliability (coefficient alpha = 0.99, 0.98, and 0.99, respectively). In confirmatory factor analysis, two- and bifactor structures (a general factor with two specific factors: Emotional and cognitive preoccupation; Loss of control and interference with daily life) expressed some satisfactory fit in all groups, but they displayed metric and scalar variance—less tendency of women with anorexia nervosa to endorse items 14, 15, and 16. A 12-item version expressed a better fit. However, the six-item Internet Addiction Test expressed the best fit, along with configural and metric invariance across groups, and excellent reliability (coefficient alpha = 0.97, 0.95, and 0.98, respectively). The criterion validity of the Internet Addiction Test, the12-item version, and our six-item version was confirmed by strong positive correlations with the Bergen Facebook Addiction Scale (r = 0.906, 0.883, and 0.878, respectively).Conclusion: The Internet Addiction Test is a unidimensional or bidimensional measure. The six-item version expresses better fit, less variance, and comparable reliability and criterion validity to the Internet Addiction Test and the 12-item version. Its brevity allows test batteries to include several measures. Scalar variance implies that differences in the properties of the Internet Addiction Test across eating disorder groups may cause statistical differences in group means, which should be considered when conducting interventional studies. Further investigations are intensely needed.

2017 ◽  
Vol 41 (S1) ◽  
pp. S285-S285
Author(s):  
I. Makhortova ◽  
O. Shiryaev

Eating disorders of bulimic type are among the most common comorbidities with depression. The objective is to evaluate cognitive function and mood dynamics in patients with depression and eating disorders in pharmacotherapy. In total, 52 outpatients, who met criteria for “major depressive episode” (ICD-10), participated. The level of depression was estimated with Hamilton Depression rating scale (HAM-D) and cognitive function–Montreal Cognitive Assessment (MoCa). Sample was divided into two groups. Patients of group 1 also met criteria for eating disorder of bulimic type and patients of group 2 did not have any eating disorder. Treatment included standard doses of SSRI. Assessments were performed after 2, 4 and 8 weeks (D14, D30, D60). The level of HAM-D was significantly greater (P < 0.05) in eating disorders group (16.75 ± 2.83 in group 1; 13.04 ± 1.93 in group 2 at screening) and significance was preserved till D60 (9.39 ± 2.54 in group 1; 6.32 ± 1.27 in group 2 at D60). Clinically significant antidepressive effect was revealed faster in group 2 (at D7) compared to group 1 (at D14). Overall score of MoCA was significantly lower (P < 0.05) in eating disorders group (20.33 ± 0.54 in group 1; 23.43 ± 2.32 in group 2 at screening) at all stages of treatment (23.39 ± 0.78 in group 1; 26.96 ± 3.27 in group 2 at D60) and it reached normal range (25 and more) only in group 2 at D60. Significant change from screening was revealed at D30 at group 2 and at D60 at group 1.ConclusionEating disorder have an impact on SSRI treatment efficacy including antidepressive and procognitive effects. It is necessary to reveal eating disorders as a co-morbidity in patients with depression.Disclosure of interestThe authors have not supplied their declaration of competing interest.


Author(s):  
Amira Mohammed Ali ◽  
Amin Omar Hendawy ◽  
Abdulaziz Mofdy Almarwani ◽  
Naif Alzahrani ◽  
Nashwa Ibrahim ◽  
...  

Internet addiction (IA) is widespread, comorbid with other conditions, and commonly undetected, which may impede recovery. The Internet Addiction Test (IAT) is widely used to evaluate IA among healthy respondents, with less agreement on its dimensional structure. This study investigated the factor structure, invariance, predictive validity, criterion validity, and reliability of the IAT among Spanish women with eating disorders (EDs, N = 123), Chinese school children (N = 1072), and Malay/Chinese university students (N = 1119). In school children, four factors with eigen values > 1 explained 50.2% of the variance, with several items cross-loading on more than two factors and three items failing to load on any factor. Among 19 tested models, CFA revealed excellent fit of a unidimensional six-item IAT among ED women and university students (χ2(7) = 8.695, 35.038; p = 0.275, 0.001; CFI = 0.998, 981; TLI = 0.996, 0.960; RMSEA = 0.045, 0.060; SRMR = 0.0096, 0.0241). It was perfectly invariant across genders, academic grades, majors, internet use activities, nationalities (Malay vs. Chinese), and Malay/Chinese female university students vs. Spanish women with anorexia nervosa, albeit it was variant at the scalar level in tests involving other EDs, signifying increased tendency for IA in pathological overeating. The six-item IAT correlated with the effects of internet use on academic performance at a greater level than the original IAT (r = −0.106, p < 0.01 vs. r = −0.78, p < 0.05), indicating superior criterion validity. The six-item IAT is a robust and brief measure of IA in healthy and diseased individuals from different cultures.


Author(s):  
Tracie L. Pasold ◽  
Jennifer L. Woods ◽  
Maria G. Portilla ◽  
James D. Nesmith ◽  
Beatrice A. Boateng

Abstract Objective Medical students and professionals report receiving limited education/training related to treating eating disorders. Because medical professionals are the point of initial contact for these patients and are involved necessarily in their treatment, sufficient knowledge on identification and intervention are imperative. This research set out to examine the impact of the eating disorder education and experience offered through a 1-month Adolescent Medicine rotation at a medical university on medical student/resident self-efficacy. Methods The 1-month rotation includes a standardized patient (SP) simulation, 1.5 h of didactic education, and 1 day observing the MD, nutritionist and psychologist within the outpatient Multidisciplinary Child/Adolescent Eating Disorders Clinic. All residents’ (n = 132) eating disorder self-efficacy was assessed before (PRE) completing simulation and didactic session and again at the end of the 1-month rotation (END). Self-efficacy was also assessed after simulation and before the didactic session for group 1 (n = 92) and after simulation and didactic session for group 2 (n = 40). Results For group 1, self-efficacy was not significantly impacted PRE to POST. For group 2, self-efficacy significantly improved PRE to POST. POST to END changes were significant for both groups; however, group 2 scored significantly better across all self-efficacy areas at END. Conclusion Resident training in eating disorders requires more than is offered in many residency programs. SP simulation is strengthened as an effective training tool in assessing and promoting resident self-efficacy if it is followed by didactic education. Clinical observation and extended practice that includes ongoing guidance/feedback on performance is recommended in fostering self-efficacy.


Author(s):  
Susan McElroy ◽  
Anna I. Guerdjikova ◽  
Nicole Mori ◽  
Paul E. Keck

This chapter addresses the pharmacotherapy of the eating disorders (EDs). Many persons with EDs receive pharmacotherapy, but pharmacotherapy research for EDs has lagged behind that for other major mental disorders. This chapter first provides a brief rationale for using medications in the treatment of EDs. It then reviews the data supporting the effectiveness of specific medications or medication classes in treating patients with anorexia nervosa (AN), bulimia nervosa (BN), binge eating disorder (BED), and other potentially important EDs, such as night eating syndrome (NES). It concludes by summarizing these data and suggesting future areas for research in the pharmacotherapy of EDs.


Author(s):  
Pamela Keel

The epidemiology of eating disorders holds important clues for understanding factors that may contribute to their etiology. In addition, epidemiological findings speak to the public health significance of these deleterious syndromes. Information on course and outcome are important for clinicians to understand the prognosis associated with different disorders of eating and for treatment planning. This chapter reviews information on the epidemiology and course of anorexia nervosa, bulimia nervosa, and two forms of eating disorder not otherwise specified, binge eating disorder and purging disorder.


Author(s):  
Susan L. McElroy ◽  
Anna I. Guerdjikova ◽  
Anne M. O’Melia ◽  
Nicole Mori ◽  
Paul E. Keck

Many persons with eating disorders (EDs) receive pharmacotherapy, but pharmacotherapy research for EDs has lagged behind that for other major mental disorders. In this chapter, we first provide a brief rationale for using medications in the treatment of EDs. We then review the data supporting the effectiveness of specific medications or medication classes in treating patients with anorexia nervosa (AN), bulimia nervosa, binge eating disorder (BED), and other potentially important EDs, such as night eating syndrome (NES) and sleep-related eating disorder (SRED). We conclude by summarizing these data and suggesting future areas for research in the pharmacotherapy of EDs.


2017 ◽  
Vol 25 (6) ◽  
pp. 601-606 ◽  
Author(s):  
Trevor Steward ◽  
Gemma Mestre-Bach ◽  
Cristina Vintró-Alcaraz ◽  
Zaida Agüera ◽  
Susana Jiménez-Murcia ◽  
...  

1993 ◽  
Vol 38 (7) ◽  
pp. 469-471 ◽  
Author(s):  
Clifford W. Sharp

A woman aged 58 who has been blind since the age of nine months presented with major depression and a 40 year history of an eating disorder characterized by a restriction of food intake and body disparagement. The case is additional evidence that a specifically visual body image is not essential for the development of anorexia nervosa and supports the view that the concept of body image is unnecessary and unproductive in eating disorders. Greater emphasis should be placed on attitudes and feelings toward the body, and the possibility of an eating disorder should be considered in cases of older women with an atypical presentation.


2021 ◽  
Author(s):  
Ashley E. Tate ◽  
Shengxin Liu ◽  
Ruyue Zhang ◽  
Zeynep Yilmaz ◽  
Janne T. Larsen ◽  
...  

OBJECTIVE <p>To ascertain the association and co-aggregation of eating disorders and childhood-onset type 1 diabetes in families. </p> <p>RESEARCH DESIGN AND METHODS</p> <p>Using population samples from national registers in Sweden (n= 2 517 277) and Demark (n= 1 825 920) we investigated the within-individual association between type 1 diabetes and EDs, and their familial co-aggregation among full siblings, half-siblings, full cousins, and half-cousins. Based on clinical diagnoses we classified eating disorders (EDs) into: any eating disorder (AED), anorexia nervosa and atypical anorexia nervosa (AN), and other eating disorder (OED). Associations were determined with hazard ratios (HR) with confidence intervals (CI) from Cox regressions. </p> <p>RESULTS</p> <pre>Swedish and Danish individuals with a type 1 diabetes diagnosis had a greater risk of receiving an ED diagnosis (HR [95% CI] Sweden: AED 2.02 [1.80 – 2.27], AN 1.63 [1.36 – 1.96], OED 2.34 [2.07 – 2.63]; Denmark: AED 2.19 [1.84 – 2.61], AN 1.78 [1.36 – 2.33], OED 2.65 [2.20 – 3.21]). We also meta-analyzed the results: AED 2.07 [1.88 – 2.28], AN 1.68 [1.44 – 1.95], OED 2.44 [2.17 – 2.72]. There was an increased risk of receiving an ED diagnosis in full siblings in the Swedish cohort (AED 1.25 [1.07 – 1.46], AN 1.28 [1.04 – 1.57], OED 1.28 [1.07 – 1.52]), these results were non-significant in the Danish cohort.</pre> <p>CONCLUSION</p> <p>Patients with 1 diabetes are at a higher risk of subsequent EDs; however, there is conflicting support for the relationship between having a sibling with type 1 diabetes and ED diagnosis. Diabetes healthcare teams should be vigilant for disordered eating behaviors in children and adolescents with type 1 diabetes. </p>


Author(s):  
Marco La Marra ◽  
Walter Sapuppo ◽  
Giorgio Caviglia

The aim of this study has been to investigate the dissociative phenomena and the difficulties related to perceive, understand and describe the proper ones and other people's emotional states in a sample of 53 patients with Eating Disorders. The recruited sample is made by 14 Anorexia Nervosa (AN) patients, 15 with Bulimia Nervosa (BN), 12 with Eating Disorder Non Otherwise Specified (EDNOS) and 12 with Binge Eating Disorder (BED). To all subjects was administred the Eating Disorder Inventory-2, the Dissociative Experiences Scale and the Scala Alessitimica Romana. In according with literature, we confirme the relationships among Eating Disorders, the dissociative phenomena and Alexithymia.


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