An interventional study of Dialectical behavior therapy (DBT) in Anxiety Disorder and Depressive Disorder, sponsored by Mackay Memorial Hospital. Recruiting at 1 site in Taiwan. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2026-05-29.
Sponsored by Mackay Memorial Hospital · Not applicable, Interventional, and Treatment
Anxiety and depressive disorders, referred to as emotional disorders, have high rates of prevalence, recurrence, and functional impairment. Transdiagnostic psychotherapy targeting shared features of these disorders has recently emerged. Dialectical behavior therapy (DBT) for the transdiagnostic treatment of emotional disorders is a promising approach, as results of preliminary studies for use in a broad range of mental disorders are encouraging. Since there is a lack of research on transdiagnostic psychotherapy in Taiwan, the investigators thus propose this 3-year randomized controlled trial to test the efficacy of a modified DBT for the treatment of transdiagnostic emotional disorders and to further evaluate whether the efficacy of modified DBT differs in the specific emotional disorders. The investigators expect that patients with emotional disorders receiving modified DBT are more likely to improve clinical outcomes, functioning, and quality of life.
Anxiety and depressive disorders, referred to as emotional disorders, have high rates of prevalence, recurrence, and functional impairment. Transdiagnostic psychotherapy targeting shared features of these disorders has recently emerged. Dialectical behavior therapy (DBT) for the transdiagnostic treatment of emotional disorders is a promising approach, as results of preliminary studies for use in a broad range of mental disorders are encouraging. Since there is a lack of research on transdiagnostic psychotherapy in Taiwan, the investigators thus propose this 3-year randomized controlled trial to test the efficacy of a modified DBT for the treatment of transdiagnostic emotional disorders and to further evaluate whether the efficacy of modified DBT differs in the specific emotional disorders. This 3-year intervention trial has a randomized, controlled, two-center, and single-blinded design with two parallel groups. The trial will be conducted in the psychiatry departments of two medical centers, employing identical protocols. Participants will be recruited and randomly allocated 1:1 to one of two study arms. The modified DBT protocol in an individual therapy format consists of 15 weekly individual sessions, each lasting 50 minutes. A minimum of 250 participants will be included based on sample size estimation. Assessments will take place before the start of the trial, at the end of the trial, and at a 3-month follow-up. Primary outcomes will be the severity of depression and anxiety, rated by blind assessors. Secondary outcomes include disorder-specific symptoms, disorder severity, functional impairment, quality of life, and emotion regulation biases. The investigators will also examine the treatment mechanisms and treatment processes.
7,201 studies on the registry are indexed under Anxiety Disorders; 1,682 are open to participants now.
This study's planned enrollment of 250 is above the median of 80 across 6,057 interventional studies indexed under Anxiety Disorders.
Browse Anxiety Disorders studies →Mackay Memorial Hospital is the lead sponsor of 118 studies on the registry; 27 are open to participants now.
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Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
As we also aim for a naturalistic setting, we do not exclude patients who undergo a medication change during the trial if this is judged necessary or by the treating clinician. Instead, we include a question about this in the questionnaire to the referring/treating clinician.
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
Clinically significant
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Treatment-as-usual (TAU) is a naturalistic treatment condition as delivered in current daily practice by psychiatrists in the medical services in Taiwan. TAU typically includes prescription and monitoring of antidepressant and/or anxiolytic medication, psychological treatment (this may include empathic listening and/or supportive counselling, psychoeducation, etc), or a combination of both. Patients in the TAU condition already receiving any of the aforementioned treatments are informed they will continue to receive as usual the services received before enrollment in the study.
The modified DBT protocol, developed by the principal investigator and co-investigators, which will be offered in an individual therapy format. It consists of 15 weekly individual sessions, each lasting 50-60 minutes. It is made based on the manual (Linehan 2015), retaining the essence of DBT (Linehan 1993), and remain dialectically focused. Each session focuses on specific skills within that content of modules.
Behavioral: Dialectical behavior therapy (DBT)
The modified DBT protocol, developed by the principal investigator and co-investigators, will be offered in an individual therapy format. It consists of 15 weekly individual sessions, each lasting 50-60 minutes. It is made based on the manual, retaining the essence of DBT and remaining dialectically focused. Each session focuses on specific skills within the context of modules.
Change of total score of Hamilton Depression Scale-17 item (HAMD-17)
Hamilton Depression Scale-17 item is an interview-based instrument for rating the overall levels of severity of the symptoms of depression and the response to treatment. Each item is rated from 0 to 4 or 0 to 2; the scores correspond to increases in severity. Total scores range from 0 to 52.
Time frame: Pretreatment (0 weeks), Posttreatment (20 weeks), 12-week follow-up (32 weeks)
Change of total score of Hamilton Anxiety Scale (HAM-A)
HAM-A comprises 14 items with each item being divided into five grades, based on a scale of 0 to 4, with a total score range of 0-56, where \<17 indicates mild severity, 18-24 mild to moderate severity and 25-30 moderate to severe.
Time frame: Pretreatment (0 weeks), Posttreatment (20 weeks), 12-week follow-up (32 weeks)
Change of total score of Clinical Global Impressions-Severity (CGI-S) and Improvement (CGI-I)
CGI-S (severity): the current condition of the patient on a scale of 1-7 (1 being normal, and 7 being among the most severely ill patients). CGI-I (improvement): the degree of improvement, as perceived by the clinician, since the start of treatment of a scale of 1-7, 1 being very much improved, and 7 being very much worse.
Time frame: Pretreatment (0 weeks), Posttreatment (20 weeks), 12-week follow-up (32 weeks)
Change of total score of Depression, Anxiety, and Stress Scales (DASS-21)
DASS-21 is a self-report measure of depression, anxiety and stress. Each seven-item scale has four response options ranging from 0 (do not apply to me at all) to 3 (apply to me much, or most of the time). Higher scores on each scale indicate higher depression, anxiety, and distress.
Time frame: Pretreatment (0 weeks), Posttreatment (20 weeks), 12-week follow-up (32 weeks)
Change of total score of Patient Health Questionnaire-9 items (PHQ-9)
PHQ-9 is a nine-item self-rated questionnaire to measure the severity of depressive symptoms corresponding to the DSM-V criteria of MDD. Each item of the PHQ-9 requires a response on a 4-point scale, ranging from 0 (never) to 3 (nearly everyday), for a total score ranging from 0 to 27, with higher scores indicating increased likelihood for major depressive disorder.
Time frame: Pretreatment (0 weeks), Posttreatment (20 weeks), 12-week follow-up (32 weeks)
Change of total score of Generalized Anxiety Disorder-7 items (GAD-7)
GAD-7 is a seven-item self-rated questionnaire to assess the severity of generalized anxiety disorder according to DSM-IV diagnostic criteria. Each item is scored on a four-point Likert scale (0-3) with total scores ranging from 0 to 21 with higher scores reflecting greater anxiety severity.
Time frame: Pretreatment (0 weeks), Posttreatment (20 weeks), 12-week follow-up (32 weeks)
Change of total score of Panic Disorder Severity Scale- Self Rating (PDSS-SR)
PDSS-SR is a self-reported instrument to rate the overall severity of panic disorder. It consists of 7 items coded on a 5-point ordinal scale (0-4), with higher scores indicating a more severe panic attack.
Time frame: Pretreatment (0 weeks), Posttreatment (20 weeks), 12-week follow-up (32 weeks)
Change of total score of Penn State Worry Questionnaire (PSWQ)
PSWQ has been widely used as a self-report measure of worry and GAD in most treatment outcome studies of GAD. It has 16 items and each item is rated on a scale from 1 ('not at all typical of me') to 5 ('very typical of me'). Total score indicate greater levels of pathological worry.
Time frame: Pretreatment (0 weeks), Posttreatment (20 weeks), 12-week follow-up (32 weeks)
Change of total score of Short Form Social Interaction Anxiety (SIAS)
The Social Interaction Anxiety Scale (SIAS) is companion measures developed for social anxiety. It is among the most commonly used tool for assessing social anxiety and the outcome of psychosocial therapy. Short-form SIAS is the self-report scale with items rated on a 5-point Likert-type scale with values ranging from 0 "Not at all characteristic or true of me" to 4 "Extremely characteristic or true of me". Higher scores indicate more severe social anxiety.
Time frame: Pretreatment (0 weeks), Posttreatment (20 weeks), 12-week follow-up (32 weeks)
Change of total score of Short Form Social Phobia Scale (SPS)
The Social Phobia Scale (SPS) is companion measures developed for social anxiety. It is among the most commonly used tool for assessing social anxiety and the outcome of psychosocial therapy. Short-form SPS is the self-report scale with items rated on a 5-point Likert-type scale with values ranging from 0 "Not at all characteristic or true of me" to 4 "Extremely characteristic or true of me". Higher scores indicate more severe social anxiety.
Time frame: Pretreatment (0 weeks), Posttreatment (20 weeks), 12-week follow-up (32 weeks)
Change of total score of Difficulties in Emotional Regulation Scale (DERS)
DERS including 36 items which assess difficulties regulating emotion across six domains, will be used to assess emotional dysregulation. Items are rated on a scale of 1 ("almost never ") to 5 ("almost always"). Higher scores indicate more difficulty in emotion regulation.
Time frame: Pretreatment (0 weeks), Posttreatment (20 weeks), 12-week follow-up (32 weeks)
Change of total score of International Positive and Negative Affect Schedule-Short Form (PANAS-SF)
The 10-item I-PANAS-SF includes five items measuring positive affect (PA) and five items measuring negative affect (NA). Responses were provided on a 5-point Likert scale ranging from 1 (never) to 5 (always). The higher scores on both PA and NA items indicate the tendency to experience a positive and negative mood.
Time frame: Pretreatment (0 weeks), Posttreatment (20 weeks), 12-week follow-up (32 weeks)
Change of total score of Quality of Life Enjoyment and Satisfaction Questionnaire-Short Form (Q-LES-Q SF)
It evaluates overall enjoyment and satisfaction with physical health, mood, work, household and leisure activities, social and family relationships, daily functioning, sexual life, economic status, overall well-being, and medications. Items are rated on a 5-point scale ('not at all or never' to 'frequently or all the time'), with higher scores indicating better enjoyment and satisfaction with life.
Time frame: Pretreatment (0 weeks), Posttreatment (20 weeks), 12-week follow-up (32 weeks)
Change of total score of The Work and Social Adjustment Scale (WSAS)
WSAS was developed to measure the functional impairment resulting from a health problem. Each item is rated on a 9-point Likert scale from 0 (no impairment) to 8 (very severe impaired). Total scores range from 0 to 40; scores of \<10 indicate a subclinical condition, 10 to 20 significant functional impairment but less severe clinical symptomatology, and ≥20 moderately severe psychopathology.
Time frame: Pretreatment (0 weeks), Posttreatment (20 weeks), 12-week follow-up (32 weeks)
Change of total score of skills subscale (DSS) of the DBT Ways of Coping Checklist (DBT-WCCL)
DBT Skills Subscale (DSS; 38 items), which assesses adaptive coping responses. Participants rate how often they have used each strategy in the past month using a 4-point Likert-type scale from 0 (never used) to 3 (regularly used).Higher scores indicate more frequent use of these skills.
Time frame: Pretreatment (0 weeks), Posttreatment (20 weeks), 12-week follow-up (32 weeks)
Change of total score of the Five Facet Mindfulness Questionnaire (FFMQ)
The FFMQ measures five aspects of mindfulness: observing, describing, acting with awareness, nonjudging of internal experience, and nonreactivity to internal experience.
Time frame: Pretreatment (0 weeks), Posttreatment (20 weeks), 12-week follow-up (32 weeks)
Change of diagnosis of Schedules for Clinical Assessment in Neuropsychiatry (SCAN)
Schedules for Clinical Assessment in Neuropsychiatry (SCAN), a semi-structured clinical interview with high reliability, is used to assess Axis I disorders. Diagnoses are assigned a clinical severity rating with a score of 0 (no symptoms attaining clinically significant severity) to 4 (severe interfering or disturbing in daily activity) as the clinical threshold for diagnostic criteria.
Time frame: Pretreatment (0 weeks), Posttreatment (20 weeks), 12-week follow-up (32 weeks)
List of threatening experiences (LTE)
The LTE questionnaire consists of 12 questions with dichotomous responses (i.e., yes/no) regarding the occurrence of 12 prevalent major stressful events.
Time frame: Pretreatment (0 weeks), Posttreatment (20 weeks), 12-week follow-up (32 weeks)
Treatment History Interview -B (THI-B)
The THI-B is used to assess patients' experiences with the psychological treatments they received during the study.
Time frame: Posttreatment (20 weeks)
Plan to share: No
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