This a pseudo-randomized clinical trial that examines if a specific group therapy for BN is effective in improving its symptomatology, and what variables mediate such improvements. To do so a sample of 100 patients with BN will be pseudorandomized in a Group Therapy for BN or in a control waiting list group. Patients will be assessed at baseline, at the end of the group therapy and at 2 year follow up.
This is a controlled non randomized study that will compare a group of patients with BN that participate in the SBS group therapy with a group of BN patients who will be in wait list as a control condition. Patients for this single center trial will be recruited from the outpatient facility of the Hospital de la Santa Creu I Sant Pau (Barcelona, Spain). After assessed for eligibility participants will be given a set of self -report questionnaires. After the questionnaires are completed participants will be allocated to wait list condition or to the treatment arm. Time between assessment and starting the SBS group will be a month or least. Participants will be administered the same questionnaires the following month after finishing the treatment or after 3 to 4 months after the first assessment for the control condition.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
100
9 to 10 group sessions of 90 to 120min each
Hospital de la Santa Creu i Sant Pau
Barcelona, Spain
Eating Attitudes Test, E-40.
A self report questionarie that assesses eating disorder symptomatology. The range of scores is 0-78. Higher scores mean higher eating disorders sympthoms.
Time frame: 3 months
Eating Disorder Inventory, EDI
A self report questionarie that assesses eating disorder symptomatology. The range of scores is 0-192. Higher scores mean higher eating disorders sympthoms
Time frame: 3 months
Bulimic Investigatory Test Edinburgh, BITE
A self report questionarie that assesses bulimia nervosa symptomatology.The range of scores is 0-30. Higher scores mean higher bulimic sympthoms
Time frame: 3 months
Body Shape Questionnaire, BSQ-34
A self report questionarie that assesses eating disorder symptomatology. The score is ranging between 34-204 points. Higher scores point to an increased level of concern on body shape.
Time frame: 3 months
Working alliance Inventory -short, WAIS.
A self report questionarie that assesses bulimia nervosa symptomatology. Values range from 12 to 84. Hihger scores meaning higher therapeutic alliance.
Time frame: 3 months
Autism-Spectrum Quotient, AQ
A self report questionarie that assesses autistic traits. The range of scores is 0 to 50. Higher scores mean higher autistic traits.
Time frame: 3 months
Quality of Life Enjoyment and Satisfaction Questionnaire, Q-LES-Q.
A self report questionarie that assesses quality of life. The range of scores is 0-100. Higher scores mean higher quality of life.
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Time frame: 3 months
Beck Depression Inventory, BDI-II
A self report questionarie that assesses depressive symptoatology. The range of scores is 0-83. Higher scores mean higher depressive symptoms.
Time frame: 3 months
Rosenberg Self-Esteem Scale, RSE.
A self report questionarie that assesses self steem. The scale ranges from 0-30. Higher scores mean higher self-esteem. The range scores is 0-60.
Time frame: 3 months
State -Trait Anxiety Inventory, STAI.
A self report questionarie that assesses anxiety. Higher scores mean higher anxiety.
Time frame: 3 months
Difficulties in Emotion Regulation Scale (DERS).
A self report questionarie that assesses emotion regulation difficulties. The scale ranges from 28-40. H igher scores indicate more difficulty in emotion regulation.
Time frame: 3 months