Bulimia NervosaCBT-RRNCT02444065
Rapid Response to Day Hospital Treatment in Bulimia Nervosa and Purging Disorder
A study testing Cognitive Behavior Therapy (CBT) and Motivational Interviewing (MI) in people with Bulimia Nervosa and Eating Disorder, run by University Health Network, Toronto at 1 site in Canada.
Trial summary
Treatments for bulimia nervosa (BN) have relatively high rates of nonremission and relapse, meaning that improving treatments is a high priority in this area. Rapid response to treatment -cessation of binge eating and vomiting symptoms within the first weeks of treatment - is a robust predictor of improved… Read more about this study
- Who is it for?
- Ages 17 years and older
- Conditions the study is for
- Bulimia Nervosa, Eating Disorder
- What is being tested?
- Cognitive Behavior Therapy (CBT) and Motivational Interviewing (MI)
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 44 participants
- Where
- 1 siteCanada
- Study dates
- May 2014to Mar 2016
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 17 years and older
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Who may be able to join
- Diagnosis of bulimia nervosa or other specified feeding and eating disorder (OSFED) purging disorder
- Body mass index of 19.0 or higher
- Has accepted day hospital eating disorder treatment at the Toronto General Hospital Eating Disorder Day Hospital Program
- No previous treatments at the Toronto General Hospital Eating Disorder Day Hospital Program in the previous 5 years
- Can read and write English fluently.
Who cannot join
- Current imminent suicidality
- Current manic episode
- Current psychosis
- Current medical instability as assessed by program medical team.
Trial locations and contacts
1 site in 1 country.
Canada1 site
Toronto General Hospital, Eating Disorder Program
Toronto, Ontario, M5G 2C4
About this study
Official title: Rapid Response to Day Hospital Treatment in Bulimia Nervosa and Purging Disorder: A Randomized Controlled Trial of an Intervention to Facilitate Early Symptom Change
Treatments for bulimia nervosa (BN) have relatively high rates of nonremission and relapse, meaning that improving treatments is a high priority in this area. Rapid response to treatment -cessation of binge eating and vomiting symptoms within the first weeks of treatment - is a robust predictor of improved post-treatment outcomes and lower relapse rates, but no study has tried to facilitate rapid response as a means of improving treatment outcomes. The present study responds to this gap in the literature by testing a 4-session CBT-based individual intervention for rapid response (i.e., "CBT-RR"), designed to augment standard day hospital (DH) treatment for BN and Purging Disorder (PD) by focusing on strategies and skills for rapid symptom interruption. CBT-RR will be compared to a matched-intensity augmentative motivational interviewing (MI) intervention. Participants will be recruited from a hospital-based day program for eating disorders, and will be randomly assigned to one of the two conditions in addition to the DH as usual. participants will be assessed at pre-intervention, post-intervention, week 4 of DH, post-DH, and 6 months follow-up. It is hypothesized that compared to those who receive MI, patients who receive CBT-RR will be more likely to exhibit a rapid response to day hospital treatment (i.e., </= 3 binge eating and/or vomiting episodes in the first 4 weeks). It is further hypothesized that patients who receive CBT-RR will exhibit fewer binge eating and/or vomiting episodes at post-DH and at 6-month follow-up. Potential mediators and moderators of these hypothesized treatment effects will be examined on an exploratory basis, including self-efficacy, motivation, and hope (potential mediators), and emotion regulation, depression, cognitive psychopathology of eating disorders, and working alliance with the therapist (potential moderators).
Read the detailed description
Cognitive behaviour therapy (CBT) is the most empirically supported treatment for bulimia nervosa (BN) and related disorders, yet approximately 1/3 of completers do not remit, there is a substantial treatment attrition rate, and 1/3 of remitted patients will relapse within the first 2 years. Improving CBT is an important research prerogative. Motivational interviewing (MI) is an augmentative intervention that has been investigated to improve CBT, but reviews indicate that it is not efficacious with eating disorders. The failure of MI with eating disorders has led to consideration that focusing on early behaviour change might be a more productive therapeutic strategy. Rapid response to treatment for eating disorders has been reliably identified as a prognostic indicator in eating disorders. For BN and similar disorders, rapid response is the rapid reduction of binge eating, vomiting, and dietary restriction during the first few weeks of treatment. Numerous studies have indicated that patients who rapidly respond to treatment are significantly more likely to be remitted at post treatment and significantly less likely to relapse, compared to those who respond more slowly. No preexisting clinical, demographic, personality or other factors have clearly emerged to account for this effect. Given that rapid response has clear prognostic importance, and given that research has failed to identify mechanisms driving this finding, this study seeks to determine whether rapid response can be facilitated clinically using a targeted intervention designed to provide patients with specific behavioural skills to decrease their bulimic symptoms rapidly. Improving remission and relapse rates is a high priority in the eating disorders research field. the investigators already know that cognitive and behavioural strategies have efficacy for eating disorders, but existing treatments need improvement. Rapid response is an area that has been frequently described and has clear prognostic importance and no clear mechanism accounting for why some patients rapidly respond, suggesting that perhaps rapid response could be facilitated if patients are provided with the skills, mindset, and support to do so. However, no study to date has sought to answer this question and determine whether rapid response can be facilitated in order to improve patient prognoses. Thus, this study seeks to examine whether rapid response to day hospital treatment can be facilitated clinically using an augmentative CBT based intervention targeting early symptom change. The CBT intervention will be compared to a matched-intensity motivational interviewing (MI) intervention. The rationale for using MI is because MI is frequently used to augment standard treatments, it provides an active treatment comparison, and because the rationale for the present study emerged partly from research aimed at understanding some of the limitations of MI in treating eating disorders. Thus, MI provides a theoretically-driven comparison group. It is predicted that individuals who receive CBT (versus MI) will be more likely to be classified as rapid responders, and will have fewer bulimic symptoms at post-day hospital and 6-month follow-up. As well, it is hypothesized that changes in self-efficacy, motivation, or hopefulness may help to account for these findings.
- Conditions
- Bulimia Nervosa, Eating Disorder
- Being tested
- Cognitive Behavior Therapy (CBT), Motivational Interviewing (MI)
- Keywords
- Cognitive behavior therapy, Motivational interviewing, Bulimia nervosa, Rapid response
- Medical subject headings
- Bulimia Nervosa, Feeding and Eating Disorders
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Cognitive Behavior Therapy (CBT)Behavioural
The CBT intervention is a 4 session (1 hour each) individual psychotherapy intervention that uses a manualized treatment protocol developed by the investigators. It uses standard CBT for eating disorders interventions, including orientation to the CBT model, psychoeducation, commitment and goal setting, behavioral strategies for normalizing eating and reducing bulimic symptoms, planning, and homework. 1-2 sessions are delivered before starting day hospital treatment, and the remaining sessions are delivered in the first weeks of day hospital.
Motivational Interviewing (MI)Behavioural
The MI intervention is a 4 session (1 hour each) individual psychotherapy intervention that uses a manualized treatment protocol (Carter \& Bewell-Weiss, 2012). It uses standard MI for eating disorders interventions, including decisional balance, exploring values, readiness and confidence rules, and MI communication strategies. 1-2 sessions are delivered before starting day hospital treatment, and the remaining sessions are delivered in the first weeks of day hospital.
| Study group | Role | What they receive |
|---|---|---|
| Cognitive Behavior Therapy (CBT) | Experimental | In this arm, participants receive the Cognitive behavior therapy (CBT) intervention as an augmentative treatment to standard day hospital treatment as usual. Receives: Behavioral: Cognitive Behavior Therapy (CBT) |
| Motivational Interviewing (MI) | Active comparator | In this arm, participants receive the Motivational Interviewing intervention as an augmentative treatment to standard day hospital treatment as usual. Receives: Behavioral: Motivational Interviewing (MI) |
What is being measured
The primary outcome is the main question the study is designed to answer.
Rapid response to day hospital treatment
Rapid response is a binary outcome variable (yes/no) of early bulimic symptoms. Rapid responders exhibit a total of three or fewer binge and/or vomit and/or laxative episodes in the first four weeks of day hospital treatment for eating disorders.
Measured: First 4 weeks of day hospital treatment
Changes in bulimic symptom frequency
Bulimic symptoms (binge eating and/or vomiting and/or laxative use) will be totalled for each 4 week period and changes modelled over time at the following time points: Baseline, first 4 weeks of day hospital, last 4 weeks of day hospital, and months 1-6 in follow-up.
Measured: Each of the following: Baseline, first 4 weeks of day hospital, last 4 weeks of day hospital, and months 1-6 in follow-up.
Secondary outcomes (2)
End-of-Day Hospital Outcome
Outcome is a binary outcome variable, remitted (yes/no). Remitted patients have one or fewer binge and/or vomit and/or laxative episodes in the last 4 weeks of day hospital treatment. Non-remitted patients have 2 or more episodes in this same period. Day hospital stays are expected to consist of an average of 8 weeks of treatment.
Measured: Participants will be assessed at end of day hospital stay, an expected average of 8 weeks.
6-month relapse rate
Relapse is a binary outcome variable (yes/no). Relapsed patients have an average of 4 or more binge and/or vomit and/or laxative use episodes per month for three consecutive months, beginning in the first 6 months after discharge from day hospital program. Non-relapsed patients have bulimic symptoms below this threshold.
Measured: 6 months after discharge from day hospital
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted14 May 2015 (estimated)
- Study startMay 2014
- Primary completionMar 2016
- Study completionMar 2016
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (28)Papers the sponsor has linked to this study.
- Other trials for Bulimia NervosaStudies of the same condition, open and under way.
- More trials run by University Health Network, TorontoThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Outcomes assessor
- Enrolment
- 44 participants (actual)
Sponsor and investigators
- Lead sponsor
- University Health Network, Toronto
- Sponsor type
- University, hospital or other
- Collaborators
- Toronto Metropolitan University
- Responsible party
- Sponsor
- Investigators
- Traci McFarlane, PhD, Principal investigator, University Health Network, Toronto
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02444065
- Sponsor's protocol ID
- 14-7391-B
- Acronym
- CBT-RR
- Status last verified
- May 2016
- First submitted
- 23 Apr 2015
- Last updated
- 16 May 2016
- Results posted
- No
- Data monitoring committee
- No
Publications
Macdonald P, Hibbs R, Corfield F, Treasure J. The use of motivational interviewing in eating disorders: a systematic review. Psychiatry Res. 2012 Nov 30;200(1):1-11. doi: 10.1016/j.psychres.2012.05.013. Epub 2012 Jun 18.
PubMed 22717144Agras WS, Crow SJ, Halmi KA, Mitchell JE, Wilson GT, Kraemer HC. Outcome predictors for the cognitive behavior treatment of bulimia nervosa: data from a multisite study. Am J Psychiatry. 2000 Aug;157(8):1302-8. doi: 10.1176/appi.ajp.157.8.1302.
PubMed 10910795Bulik CM, Sullivan PF, Carter FA, McIntosh VV, Joyce PR. Predictors of rapid and sustained response to cognitive-behavioral therapy for bulimia nervosa. Int J Eat Disord. 1999 Sep;26(2):137-44. doi: 10.1002/(sici)1098-108x(199909)26:23.0.co;2-n.
PubMed 10422602Wilson GT, Fairburn CC, Agras WS, Walsh BT, Kraemer H. Cognitive-behavioral therapy for bulimia nervosa: time course and mechanisms of change. J Consult Clin Psychol. 2002 Apr;70(2):267-74.
PubMed 11952185Fairburn CG, Cooper Z, Doll HA, O'Connor ME, Bohn K, Hawker DM, Wales JA, Palmer RL. Transdiagnostic cognitive-behavioral therapy for patients with eating disorders: a two-site trial with 60-week follow-up. Am J Psychiatry. 2009 Mar;166(3):311-9. doi: 10.1176/appi.ajp.2008.08040608. Epub 2008 Dec 15.
PubMed 19074978Grilo CM, Masheb RM. Rapid response predicts binge eating and weight loss in binge eating disorder: findings from a controlled trial of orlistat with guided self-help cognitive behavioral therapy. Behav Res Ther. 2007 Nov;45(11):2537-50. doi: 10.1016/j.brat.2007.05.010. Epub 2007 Jun 7.
PubMed 17659254McFarlane TL, MacDonald DE, Royal S, Olmsted MP. Rapid and slow responders to eating disorder treatment: a comparison on clinically relevant variables. Int J Eat Disord. 2013 Sep;46(6):563-6. doi: 10.1002/eat.22136. Epub 2013 Apr 12.
PubMed 23580395Knowles L, Anokhina A, Serpell L. Motivational interventions in the eating disorders: what is the evidence? Int J Eat Disord. 2013 Mar;46(2):97-107. doi: 10.1002/eat.22053. Epub 2012 Sep 24.
PubMed 23001832MacDonald DE, Trottier K, McFarlane T, Olmsted MP. Empirically defining rapid response to intensive treatment to maximize prognostic utility for bulimia nervosa and purging disorder. Behav Res Ther. 2015 May;68:48-53. doi: 10.1016/j.brat.2015.03.007. Epub 2015 Mar 17.
PubMed 25800137Masheb RM, Grilo CM. Rapid response predicts treatment outcomes in binge eating disorder: implications for stepped care. J Consult Clin Psychol. 2007 Aug;75(4):639-44. doi: 10.1037/0022-006X.75.4.639.
PubMed 17663617McFarlane T, Olmsted MP, Trottier K. Timing and prediction of relapse in a transdiagnostic eating disorder sample. Int J Eat Disord. 2008 Nov;41(7):587-93. doi: 10.1002/eat.20550.
PubMed 18473336Olmsted MP, Kaplan AS, Rockert W. Rate and prediction of relapse in bulimia nervosa. Am J Psychiatry. 1994 May;151(5):738-43. doi: 10.1176/ajp.151.5.738.
PubMed 8166317Olmsted MP, Kaplan AS, Rockert W, Jacobsen M. Rapid responders to intensive treatment of bulimia nervosa. Int J Eat Disord. 1996 Apr;19(3):279-85. doi: 10.1002/(SICI)1098-108X(199604)19:33.0.CO;2-J.
PubMed 8704727Olmsted MP, MacDonald DE, McFarlane T, Trottier K, Colton P. Predictors of rapid relapse in bulimia nervosa. Int J Eat Disord. 2015 Apr;48(3):337-40. doi: 10.1002/eat.22380. Epub 2014 Dec 26.
PubMed 25545720Olmsted MP, McFarlane T, Trottier K, Rockert W. Efficacy and intensity of day hospital treatment for eating disorders. Psychother Res. 2013;23(3):277-86. doi: 10.1080/10503307.2012.721937. Epub 2012 Sep 18.
PubMed 22989039
Study at a glance
From the registry record, last updated by the sponsor on 16 May 2016. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Rapid Response to Day Hospital Treatment in Bulimia Nervosa and Purging Disorder: A Randomized Controlled Trial of an Intervention to Facilitate Early Symptom Change
- ClinicalTrials.gov ID
- NCT02444065
- Acronym / sponsor ID
- CBT-RR / 14-7391-B
- Conditions
- Bulimia Nervosa, Eating Disorder
- Keywords
- Cognitive behavior therapy, Motivational interviewing, Bulimia nervosa, Rapid response
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 44 participants (actual)
- Lead sponsor
- University Health Network, TorontoUniversity, hospital or other
- Collaborators
- Toronto Metropolitan University
- Study start
- May 2014
- Primary completion
- Mar 2016 (actual)
- Study completion
- Mar 2016 (actual)
- First posted
- 14 May 2015 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Treatments for bulimia nervosa (BN) have relatively high rates of nonremission and relapse, meaning that improving treatments is a high priority in this area. Rapid response to treatment -cessation of binge eating and vomiting symptoms within the first weeks of treatment - is a robust predictor of improved post-treatment outcomes and lower relapse rates, but no study has tried to facilitate rapid response as a means of improving treatment outcomes. The present study responds to this gap in the literature by testing a 4-session CBT-based individual intervention for rapid response (i.e., "CBT-RR"), designed to augment standard day hospital (DH) treatment for BN and Purging Disorder (PD) by focusing on strategies and skills for rapid symptom interruption. CBT-RR will be compared to a matched-intensity augmentative motivational interviewing (MI) intervention. Participants will be recruited from a hospital-based day program for eating disorders, and will be randomly assigned to one of the two conditions in addition to the DH as usual. participants will be assessed at pre-intervention, post-intervention, week 4 of DH, post-DH, and 6 months follow-up. It is hypothesized that compared to those who receive MI, patients who receive CBT-RR will be more likely to exhibit a rapid response to day hospital treatment (i.e., </= 3 binge eating and/or vomiting episodes in the first 4 weeks). It is further hypothesized that patients who receive CBT-RR will exhibit fewer binge eating and/or vomiting episodes at post-DH and at 6-month follow-up. Potential mediators and moderators of these hypothesized treatment effects will be examined on an exploratory basis, including self-efficacy, motivation, and hope (potential mediators), and emotion regulation, depression, cognitive psychopathology of eating disorders, and working alliance with the therapist (potential moderators).
Detailed description
Cognitive behaviour therapy (CBT) is the most empirically supported treatment for bulimia nervosa (BN) and related disorders, yet approximately 1/3 of completers do not remit, there is a substantial treatment attrition rate, and 1/3 of remitted patients will relapse within the first 2 years. Improving CBT is an important research prerogative. Motivational interviewing (MI) is an augmentative intervention that has been investigated to improve CBT, but reviews indicate that it is not efficacious with eating disorders. The failure of MI with eating disorders has led to consideration that focusing on early behaviour change might be a more productive therapeutic strategy. Rapid response to treatment for eating disorders has been reliably identified as a prognostic indicator in eating disorders. For BN and similar disorders, rapid response is the rapid reduction of binge eating, vomiting, and dietary restriction during the first few weeks of treatment. Numerous studies have indicated that patients who rapidly respond to treatment are significantly more likely to be remitted at post treatment and significantly less likely to relapse, compared to those who respond more slowly. No preexisting clinical, demographic, personality or other factors have clearly emerged to account for this effect. Given that rapid response has clear prognostic importance, and given that research has failed to identify mechanisms driving this finding, this study seeks to determine whether rapid response can be facilitated clinically using a targeted intervention designed to provide patients with specific behavioural skills to decrease their bulimic symptoms rapidly. Improving remission and relapse rates is a high priority in the eating disorders research field. the investigators already know that cognitive and behavioural strategies have efficacy for eating disorders, but existing treatments need improvement. Rapid response is an area that has been frequently described and has clear prognostic importance and no clear mechanism accounting for why some patients rapidly respond, suggesting that perhaps rapid response could be facilitated if patients are provided with the skills, mindset, and support to do so. However, no study to date has sought to answer this question and determine whether rapid response can be facilitated in order to improve patient prognoses. Thus, this study seeks to examine whether rapid response to day hospital treatment can be facilitated clinically using an augmentative CBT based intervention targeting early symptom change. The CBT intervention will be compared to a matched-intensity motivational interviewing (MI) intervention. The rationale for using MI is because MI is frequently used to augment standard treatments, it provides an active treatment comparison, and because the rationale for the present study emerged partly from research aimed at understanding some of the limitations of MI in treating eating disorders. Thus, MI provides a theoretically-driven comparison group. It is predicted that individuals who receive CBT (versus MI) will be more likely to be classified as rapid responders, and will have fewer bulimic symptoms at post-day hospital and 6-month follow-up. As well, it is hypothesized that changes in self-efficacy, motivation, or hopefulness may help to account for these findings.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Cognitive Behavior Therapy (CBT) | Experimental | Behavioral: Cognitive Behavior Therapy (CBT)In this arm, participants receive the Cognitive behavior therapy (CBT) intervention as an augmentative treatment to standard day hospital treatment as usual. |
| Motivational Interviewing (MI) | Active comparator | Behavioral: Motivational Interviewing (MI)In this arm, participants receive the Motivational Interviewing intervention as an augmentative treatment to standard day hospital treatment as usual. |
Who may qualify
- Ages
- 17 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (5 listed)
- Diagnosis of bulimia nervosa or other specified feeding and eating disorder (OSFED) purging disorder
- Body mass index of 19.0 or higher
- Has accepted day hospital eating disorder treatment at the Toronto General Hospital Eating Disorder Day Hospital Program
- No previous treatments at the Toronto General Hospital Eating Disorder Day Hospital Program in the previous 5 years
- Can read and write English fluently.
Key exclusion criteria (4 listed)
- Current imminent suicidality
- Current manic episode
- Current psychosis
- Current medical instability as assessed by program medical team.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Cognitive Behavior Therapy (CBT)The CBT intervention is a 4 session (1 hour each) individual psychotherapy intervention that uses a manualized treatment protocol developed by the investigators. It uses standard CBT for eating disorders interventions, including orientation to the CBT model, psychoeducation, commitment and goal setting, behavioral strategies for normalizing eating and reducing bulimic symptoms, planning, and homework. 1-2 sessions are delivered before starting day hospital treatment, and the remaining sessions are delivered in the first weeks of day hospital. | Behavioural | Cognitive Behavior Therapy (CBT) |
| Motivational Interviewing (MI)The MI intervention is a 4 session (1 hour each) individual psychotherapy intervention that uses a manualized treatment protocol (Carter \& Bewell-Weiss, 2012). It uses standard MI for eating disorders interventions, including decisional balance, exploring values, readiness and confidence rules, and MI communication strategies. 1-2 sessions are delivered before starting day hospital treatment, and the remaining sessions are delivered in the first weeks of day hospital. | Behavioural | Motivational Interviewing (MI) |
Primary outcome
Rapid response to day hospital treatment
Time frame: First 4 weeks of day hospital treatment
Rapid response is a binary outcome variable (yes/no) of early bulimic symptoms. Rapid responders exhibit a total of three or fewer binge and/or vomit and/or laxative episodes in the first four weeks of day hospital treatment for eating disorders.
Changes in bulimic symptom frequency
Time frame: Each of the following: Baseline, first 4 weeks of day hospital, last 4 weeks of day hospital, and months 1-6 in follow-up.
Bulimic symptoms (binge eating and/or vomiting and/or laxative use) will be totalled for each 4 week period and changes modelled over time at the following time points: Baseline, first 4 weeks of day hospital, last 4 weeks of day hospital, and months 1-6 in follow-up.
2 secondary outcomes
End-of-Day Hospital Outcome
Time frame: Participants will be assessed at end of day hospital stay, an expected average of 8 weeks.
6-month relapse rate
Time frame: 6 months after discharge from day hospital
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 16 May 2016.
- Background: PubMed 22717144Macdonald P, Hibbs R, Corfield F, Treasure J. The use of motivational interviewing in eating disorders: a systematic review. Psychiatry Res. 2012 Nov 30;200(1):1-11. doi: 10.1016/j.psychres.2012.05.013. Epub 2012 Jun 18.
- Results publication: PubMed 10910795Agras WS, Crow SJ, Halmi KA, Mitchell JE, Wilson GT, Kraemer HC. Outcome predictors for the cognitive behavior treatment of bulimia nervosa: data from a multisite study. Am J Psychiatry. 2000 Aug;157(8):1302-8. doi: 10.1176/appi.ajp.157.8.1302.
- Results publication: PubMed 10422602Bulik CM, Sullivan PF, Carter FA, McIntosh VV, Joyce PR. Predictors of rapid and sustained response to cognitive-behavioral therapy for bulimia nervosa. Int J Eat Disord. 1999 Sep;26(2):137-44. doi: 10.1002/(sici)1098-108x(199909)26:23.0.co;2-n.
- Results publication: PubMed 11952185Wilson GT, Fairburn CC, Agras WS, Walsh BT, Kraemer H. Cognitive-behavioral therapy for bulimia nervosa: time course and mechanisms of change. J Consult Clin Psychol. 2002 Apr;70(2):267-74.
- Results publication: PubMed 19074978Fairburn CG, Cooper Z, Doll HA, O'Connor ME, Bohn K, Hawker DM, Wales JA, Palmer RL. Transdiagnostic cognitive-behavioral therapy for patients with eating disorders: a two-site trial with 60-week follow-up. Am J Psychiatry. 2009 Mar;166(3):311-9. doi: 10.1176/appi.ajp.2008.08040608. Epub 2008 Dec 15.
- Results publication: PubMed 17659254Grilo CM, Masheb RM. Rapid response predicts binge eating and weight loss in binge eating disorder: findings from a controlled trial of orlistat with guided self-help cognitive behavioral therapy. Behav Res Ther. 2007 Nov;45(11):2537-50. doi: 10.1016/j.brat.2007.05.010. Epub 2007 Jun 7.
- Results publication: PubMed 23580395McFarlane TL, MacDonald DE, Royal S, Olmsted MP. Rapid and slow responders to eating disorder treatment: a comparison on clinically relevant variables. Int J Eat Disord. 2013 Sep;46(6):563-6. doi: 10.1002/eat.22136. Epub 2013 Apr 12.
- Results publication: PubMed 23001832Knowles L, Anokhina A, Serpell L. Motivational interventions in the eating disorders: what is the evidence? Int J Eat Disord. 2013 Mar;46(2):97-107. doi: 10.1002/eat.22053. Epub 2012 Sep 24.
- Results publication: PubMed 25800137MacDonald DE, Trottier K, McFarlane T, Olmsted MP. Empirically defining rapid response to intensive treatment to maximize prognostic utility for bulimia nervosa and purging disorder. Behav Res Ther. 2015 May;68:48-53. doi: 10.1016/j.brat.2015.03.007. Epub 2015 Mar 17.
- Results publication: PubMed 17663617Masheb RM, Grilo CM. Rapid response predicts treatment outcomes in binge eating disorder: implications for stepped care. J Consult Clin Psychol. 2007 Aug;75(4):639-44. doi: 10.1037/0022-006X.75.4.639.
- Results publication: PubMed 18473336McFarlane T, Olmsted MP, Trottier K. Timing and prediction of relapse in a transdiagnostic eating disorder sample. Int J Eat Disord. 2008 Nov;41(7):587-93. doi: 10.1002/eat.20550.
- Results publication: PubMed 8166317Olmsted MP, Kaplan AS, Rockert W. Rate and prediction of relapse in bulimia nervosa. Am J Psychiatry. 1994 May;151(5):738-43. doi: 10.1176/ajp.151.5.738.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Traci McFarlane, PhD principal investigator
University Health Network, Toronto
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Cognitive Behavior Therapy (CBT) and Motivational Interviewing (MI) in people with Bulimia Nervosa and Eating Disorder, run by University Health Network, Toronto at 1 site in Canada.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 16 May 2016. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Canada. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Rapid response to day hospital treatment (time frame: First 4 weeks of day hospital treatment). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT02444065, which also lists 28 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 16 May 2016.