Comparing illness duration and age as predictors of treatment outcome in female inpatients with anorexia nervosa.

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Title: Comparing illness duration and age as predictors of treatment outcome in female inpatients with anorexia nervosa.
Authors: Meule, Adrian, Kolar, David R., Rauh, Elisabeth, Voderholzer, Ulrich
Source: Eating Disorders. May/Jun2023, Vol. 31 Issue 3, p274-284. 11p. 3 Charts.
Subjects: Hospital patients, Confidence intervals, Age distribution, Women, Regression analysis, Treatment effectiveness, Risk assessment, Weight gain, Disease duration, Anorexia nervosa, Body mass index, Evaluation
Geographic Terms: United Kingdom
Abstract: It has been widely assumed that longer illness duration predicts poorer treatment outcome in persons with anorexia nervosa (AN). However, studies on the prognostic effects of illness duration have produced mixed results. Thus, the aim of the current study was to examine the relationship between illness duration and short-term treatment outcome in a large sample of female inpatients with AN (n = 902, aged 12–73 years). Treatment outcome variables included body mass index, therapist-rated global functioning (Global Assessment of Functioning scale and Clinical Global Impression–Improvement scale) and subscales of the Eating Disorder Inventory–2. Longer illness duration predicted smaller weight gain, smaller improvements in global functioning, and smaller decreases in self-reported eating disorder symptoms. However, illness duration was almost perfectly correlated with patients' age (r =.81, 95% CI [.76,.85]), and comparing regression models revealed that models using either illness duration or age were indistinguishable. Results suggest that longer illness duration does indeed relate to worse short-term treatment outcome in inpatients with AN. This effect, however, does not add significant information above and beyond patients' age and, thus, the importance of illness duration for anticipating treatment outcome both in research and in clinical practice must be critically examined. [ABSTRACT FROM AUTHOR]
Copyright of Eating Disorders is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: It has been widely assumed that longer illness duration predicts poorer treatment outcome in persons with anorexia nervosa (AN). However, studies on the prognostic effects of illness duration have produced mixed results. Thus, the aim of the current study was to examine the relationship between illness duration and short-term treatment outcome in a large sample of female inpatients with AN (n = 902, aged 12–73 years). Treatment outcome variables included body mass index, therapist-rated global functioning (Global Assessment of Functioning scale and Clinical Global Impression–Improvement scale) and subscales of the Eating Disorder Inventory–2. Longer illness duration predicted smaller weight gain, smaller improvements in global functioning, and smaller decreases in self-reported eating disorder symptoms. However, illness duration was almost perfectly correlated with patients' age (r =.81, 95% CI [.76,.85]), and comparing regression models revealed that models using either illness duration or age were indistinguishable. Results suggest that longer illness duration does indeed relate to worse short-term treatment outcome in inpatients with AN. This effect, however, does not add significant information above and beyond patients' age and, thus, the importance of illness duration for anticipating treatment outcome both in research and in clinical practice must be critically examined. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Eating Disorders is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1080/10640266.2022.2114586
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      – Code: eng
        Text: English
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        PageCount: 11
        StartPage: 274
    Subjects:
      – SubjectFull: Hospital patients
        Type: general
      – SubjectFull: Confidence intervals
        Type: general
      – SubjectFull: Age distribution
        Type: general
      – SubjectFull: Women
        Type: general
      – SubjectFull: Regression analysis
        Type: general
      – SubjectFull: Treatment effectiveness
        Type: general
      – SubjectFull: Risk assessment
        Type: general
      – SubjectFull: Weight gain
        Type: general
      – SubjectFull: Disease duration
        Type: general
      – SubjectFull: Anorexia nervosa
        Type: general
      – SubjectFull: Body mass index
        Type: general
      – SubjectFull: Evaluation
        Type: general
      – SubjectFull: United Kingdom
        Type: general
    Titles:
      – TitleFull: Comparing illness duration and age as predictors of treatment outcome in female inpatients with anorexia nervosa.
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            NameFull: Meule, Adrian
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            NameFull: Kolar, David R.
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            NameFull: Rauh, Elisabeth
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            – D: 01
              M: 05
              Text: May/Jun2023
              Type: published
              Y: 2023
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              Value: 31
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              Value: 3
          Titles:
            – TitleFull: Eating Disorders
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