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The study is a clinical trial assessing the efficacy of a new twenty session cognitive behavioral therapy for adults (18+) with anorexia nervosa (AN). It is expected that participants will gain a significant amount of weight and experience a significant decrease in eating disorder psychopathology and behavior from pre- to post- treatment and that this will be retained after 6-months.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| CBT-20-AN | Experimental | The single CBT-20-AN arm of this study is experimental, consisting of 20 weekly sessions and one-month, three-month, and six-month follow-ups. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Twenty Session Cognitive-Behavioral Therapy for Anorexia Nervosa (CBT-20-AN) | Behavioral | Twenty session cognitive behavioral therapy for Anorexia Nervosa (CBT-20-AN) is an treatment for Anorexia Nervosa delivered by a mental health clinician. This treatment (CBT-20-AN) lasts just 20 sessions and has been designed to allow individuals with AN to reap the benefits of CBT for eating disorders (up to 40 sessions) in less time, increasing access to care and shortening time to symptom reduction. |
| Measure | Description | Time Frame |
|---|---|---|
| Patient weight | Weight collected at each session. | Change from study treatment week one to final session, an average of 25 weeks after week one (measured at weekly study treatment sessions), and to the one, three, and six-month follow-up session, up to 11 months after week one. |
| Generalized Anxiety Disorder (GAD-7) | A 7-item scale that measures symptoms of Generalized Anxiety Disorder (GAD), such as feeling anxious or nervous, having trouble relaxing, irritability, and feelings of dread. Scores range from 0 to 21, with higher scores reflecting higher general anxiety. | Change from week one of study treatment to post-treatment following final session, an average of 25 weeks after week one (measured at weeks one, six, and twenty), and to one, three, and six-month follow-up sessions, up to 11 months after week one. |
| Patient Health Questionnaire - 9 (PHQ-9) | A 9-item scale that measures symptoms of depression. Scores range from 0 to 27, with higher scores reflecting higher depression. | Change from week one of study treatment to post-treatment following final session, an average of 25 weeks after week one (measured at weeks one, six, and twenty), and to one, three, and six-month follow-up sessions, up to 11 months after week one. |
| Eating Disorder Examination Interview (EDE) | A semi-structured interview designed to assess current eating disorder psychopathology. | Change from baseline assessed at screen visit to post-treatment following final session, an average of 25 weeks after baseline assessment. |
| Eating Disorder Examination Questionnaire (EDE-Q6) | A 33-item self-report questionnaire that assesses the presence of eating disorders symptoms in the past 28 days. Eating Disorder examination questionnaire (EDE-Q 6.0) Scores range from 0 to 6, with higher scores reflecting higher eating disorder behaviors and attitudes. |
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Inclusion Criteria:
Exclusion Criteria:
Patients will be excluded if they exhibit:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Eating Disorders Clinical and Research Program | Boston | Massachusetts | 02114 | United States |
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| Change from week one of study treatment to post-treatment following final session, an average of 25 weeks after week one (measured at weeks one, six, and twenty), and to one, three, and six-month follow-up sessions, up to 11 months after week one. |
| Eating Disorder - 15 Scale (ED-15) | A 15-item self-report measure that assesses eating disorder symptoms and behaviors, designed to measure session-by-session change for clinical and research purposes. Scores range from 0 to 6, with higher scores reflecting higher disordered eating attitudes and behaviors. | Change from study treatment week one to post-treatment following final session, an average of 25 weeks after week one (measured at weekly study treatment session), and to the one, three, and six-month follow-up session, up to 11 months after week one. |
| Working Alliance Inventory Short (WAI-SR) | A 12-item self-report measure that assess therapeutic alliance between the patient and therapist. (i.e., how comfortable the patient feels with the therapist, how much they trust the therapist, how much they feel the therapist is working towards their desired treatment goals, etc.). Scores range from 5 to 20, with higher scores reflecting higher therapeutic alliance. | Change from week one of study treatment to post-treatment following final session, an average of 25 weeks after week one (measured at weeks one, six, and twenty), and to the six-month follow-up session, up to 11 months after week one. |
| General Self-Efficacy Measure-Short Form | A 6-item, short form assessment of the patient's perception of their own general self-efficacy. Scores range from 10 to 40, with higher scores reflecting higher self-efficacy. | Change from week one of study treatment to post-treatment following final session, an average of 25 weeks after week one (measured at weeks one, six, and twenty), and to the six-month follow-up session, up to 11 months after week one. |
| Approach/Avoidance of Weighing Questionnaire (AAWQ) | A 9-item, self-report questionnaire that assesses approach and avoidance weighing tendencies. Items 1-3 are summed to provide the approach weighing tendency subscale and items 4-6 are summed to provide the avoidance weighing tendency subscale, with scores ranging from 3-18. Higher scores on each subscale indicate a higher degree of that subscale's weighing tendency. | Change from baseline assessed at screen visit to post-treatment following final session, an average of 25 weeks after baseline assessment. |
| Three Factor Eating Questionnaire (TFEQ) - Restriction subscale | An 18-item, self-report questionnaire that assesses the presence and severity of restriction. | Change from baseline assessed at screen visit to session 20 and post-treatment following final session, an average of 20-25 weeks after baseline assessment. |
| Eating Disorder Inventory-3 (EDI-3) - Drive for Thinness and Body Dissatisfaction subscales | Subscales from the self-report EDI-3 questionnaire that will be used to assess the presence of both drive for thinness and body dissatisfaction. The drive for thinness subscale is 7 items and body dissatisfaction subscale is 10 items. | Change from baseline assessed at screen visit to session 20 and post-treatment following final session, an average of 20-25 weeks after baseline assessment. |
| Clinical Impairment Assessment Questionnaire (CIA) | A 16-item self-report measure of the severity of psychosocial impairment due to eating disorder features. | Change from week one of study treatment to post-treatment following final session, an average of 25 weeks after week one (measured at weeks one, six, and twenty), and to one, three, and six-month follow-up sessions, up to 11 months after week one. |
| Quality of life questions | A set of two qualitative questions, developed by the study team, which assess improvements in quality of life since starting treatment ("How has your life improved since beginning treatment?") and areas still needing improvement ("What areas of your life could still be improved?"). | Change from week six of study treatment to post-treatment following final session, an average of 25 weeks after week one (measured at weeks one, six, and twenty), and to one, three, and six-month follow-up sessions, up to 11 months after week one. |
| ID | Term |
|---|---|
| D000856 | Anorexia Nervosa |
| ID | Term |
|---|---|
| D001068 | Feeding and Eating Disorders |
| D001523 | Mental Disorders |
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