CClinicalTrials.gg
CompletedNCT01924715CEISTDPUpdated Aug 16, 2013

Evaluating the Cost Effectiveness of ISTDP: A Quasi Experimental Study

An observational study in Anxiety, Somatoform Disorders and Personality Disorders, sponsored by Nova Scotia Health Authority. Completed at 1 site in Canada. Open to participants aged 12 Years to 90 Years. Per ClinicalTrials.gov, last updated 2013-08-16.

Sponsored by Nova Scotia Health Authority · Observational

Study type
Observational
Model
Case-control
Time perspective
Retrospective
Enrollment
1,082
Ages
12 Years to 90 Years
Sex
All
01

Study summary

Objective: To evaluate whether or not cases treated with Intensive Short-term Dynamic Psychotherapy (ISTDP) facilitate healthcare cost reduction, whether any observed reduction is greater than that of a control group and whether any such gains would be maintained in follow up.

Design: A quasi-experimental design was employed in which pre and post healthcare cost and usage data were extracted for all ISTDP treated cases from 1999 to 2008 and compared to parallel measures of a control group of cases referred but never treated.

Read the detailed description

Importance: Psychiatric and psychological disorders result in excess health care service use and costs. Brief psychotherapy methods may be effective across a broad range of mental disorders and could therefore result in healthcare cost reduction.

Objective: To evaluate whether or not cases treated with Intensive Short-term Dynamic Psychotherapy (ISTDP) facilitate healthcare cost reduction, whether any observed reduction is greater than that of a control group and whether any such gains would be maintained in follow up.

Design: A quasi-experimental design was employed in which pre and post healthcare cost and usage data were extracted for all ISTDP treated cases from 1999 to 2008 and compared to parallel measures of a control group of cases referred but never treated.

Setting: Treatments were provided at an urban University based psychotherapy service.

Participants: All cases from the province of Nova Scotia treated within the research time frame were included. 890 patients were included with a very broad range of psychiatric disorders including anxiety, mood, somatoform, personality and psychotic disorders. 192 referred but never see cases served as non randomized controls.

Intervention(s): ISTDP is an emotionally focused form of brief psychotherapy which has supportive, cognitive, experiential and primarily psychodynamic elements. In this setting the average length of treatment was 7.3 sessions and cost an estimated $500 dollars per treatment course.

02

Conditions studied

  • Anxiety
  • Somatoform Disorders
  • Personality Disorders
  • Depression
  • Psychotic Disorders

Keywords

  • somatoform disorder
  • psychotherapy
  • depression
  • anxiety
  • personality disorder
03

In context

Depression

8,057 studies on the registry are indexed under Depression; 1,641 are open to participants now.

This study's enrollment of 1,082 is above the median of 160 across 1,084 observational studies indexed under Depression.

Browse Depression studies →

Lead sponsor

Nova Scotia Health Authority is the lead sponsor of 255 studies on the registry; 76 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
12 Years to 90 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

All Major DSM IV categories included including mood, anxiety, personality, somatoform, dissociative, eating and psychotic disorders

Inclusion criteria

  • All patients referred for ISTDP treatment

Exclusion criteria

Exclusion Criteria:

  • Patients not referred for ISTDP treatment
05

Study design

Observational model
Case-control
Time perspective
Retrospective
Enrollment
1,082 participants (actual)
Patient registry
No

Groups and cohorts

  • ISTDP

    Patients provided Intensive Short term Dynamic Psychotherapy

    Behavioral: ISTDP

  • Control Group

    Patients referred for ISTDP but never seen for any reason

Interventions

  • BehavioralISTDP

    An emotion focused brief psychotherapy format.

    Also known as: Intensive Short-term Dynamic Psychotherapy

06

What researchers measure

Primary outcomes

  1. Total Doctor and Hospital Costs

    Total Physician and Hospital billings per patient

    Time frame: 1 year pre versus 3 years post

Secondary outcomes

  1. Hospital costs

    Total Hospital costs per patient

    Time frame: 1 year pre versus 3 years post

  2. Hospital Days

    Hospital days per patient

    Time frame: 1 year per versus 3 years post

  3. Doctor Visits

    Doctor Costs per patient

    Time frame: 1 year pre versus 3 years post

  4. Doctor Costs

    Doctor costs per patient

    Time frame: 1 year pre versus 3 years post

07

Study locations

1 site
  • Capital Health
    Halifax, Nova Scotia B3H 2E2, Canada
08

References and documents

Publications

  • Abbass A, Kisely S, Rasic D, Town JM, Johansson R. Long-term healthcare cost reduction with Intensive Short-term Dynamic Psychotherapy in a tertiary psychiatric service. J Psychiatr Res. 2015 May;64:114-20. doi: 10.1016/j.jpsychires.2015.03.001. Epub 2015 Mar 25. PubMed 25840829 ↗
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 16, 2013, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01924715
Lead sponsor
Nova Scotia Health Authority
Responsible party
Sponsor
First posted
Aug 16, 2013
Start date
Jan 2008
Primary completion
Mar 2009
Completion
Mar 2009
Last update
Aug 16, 2013

Study contacts

Allan A Abbass, MD, FRCPC
principal investigator · Nova Scotia Health Authority

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jul 2013. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion