An online stepped-care approach to post-traumatic stress disorder treatment reduced delivery costs by 8% to 10% compared with telehealth cognitive processing therapy in a trial led by Flinders University researchers. The lower-cost program produced similar improvements on a clinician-rated PTSD measure after treatment and in depression across the treatment period, but it also had a higher dropout rate and weaker self-reported PTSD results than cognitive processing therapy alone.
The study, published in Behaviour Research and Therapy, examined 84 adults with PTSD or subthreshold PTSD. It addresses a practical question facing mental-health systems: how to extend access to treatment without assuming every patient needs the same intensity of care at the outset.
Testing a two-step treatment model
Post-traumatic stress disorder is estimated to affect 3.9% of the global population, according to the report. Stepped care is intended to match a person with the form and intensity of treatment that best fits their needs, moving them to more intensive support when prespecified criteria are met.
Researchers say there has been no broad consensus on which treatments should form the steps, how clinicians should decide when to escalate care or which patients should begin with higher-intensity treatment. The Flinders trial was designed to offer evidence relevant to those decisions.
The stepped-care intervention had two parts. Participants began with This Way Up, an online self-guided therapy. If the trial’s pre-established criteria indicated the need, they moved on to cognitive processing therapy, or CPT, in a standard format. The comparison group received CPT by telehealth.
CPT is a standard-form therapy used for PTSD. The distinction in the trial was therefore not between receiving care and receiving no care. It was between starting with an online, self-guided option with a route to further treatment, and receiving telehealth CPT as the initial treatment approach.
Comparable gains on some measures
Both groups showed significant improvement in PTSD, depression and quality of life during treatment and at six months after treatment. The stepped-care group achieved similar outcomes to telehealth CPT on the clinician-rated PTSD measure after treatment. It also showed similar improvement in depression at all measured points through the program.
Those findings are important because clinician-rated and self-reported outcomes do not necessarily tell exactly the same story. A system considering a lower-intensity digital starting point would need to assess more than one measure of progress, as well as whether patients are staying engaged long enough to benefit.
The lower delivery cost is one potential advantage. The researchers calculated that stepped care cost 8% to 10% less to deliver than CPT alone. Its online component could also expand access for clients who might otherwise face barriers to therapy, particularly where conventional treatment capacity is limited.
The engagement trade-off
Cost savings did not make the two approaches interchangeable. CPT had fewer participants drop out during the treatment program: 26% compared with 43% for stepped care. CPT also produced better self-reported PTSD outcomes.
That difference is a central limitation and a central result. An online, self-guided first step may reduce the cost of delivering care, but a treatment model is only useful when people can engage with it. The trial does not support a simple conclusion that lower-intensity treatment should replace higher-intensity therapy for everyone.
Instead, it suggests that stepped care may be a viable option where accessibility and cost are important, provided programs pay close attention to dropout, monitoring and the criteria used to move a client to more intensive treatment. The researchers’ use of prespecified escalation criteria was a key part of the design because it gave the model a defined mechanism for responding when a lower-intensity step was not sufficient.
Relevance for digital mental-health policy
Lead researcher Larissa Roberts said clinical guidelines and government health policies are increasingly recommending stepped-care approaches for mental-health disorders, with the aim of improving accessibility through online and e-health technology. The trial provides an example of how that policy direction can be tested against clinical and economic outcomes rather than evaluated only as a technology deployment.
The results also show why implementation details matter. Choosing the initial treatment, identifying who should begin at a higher intensity and setting escalation thresholds are not administrative questions. They shape who receives what care, how rapidly treatment changes and whether a lower-cost pathway remains clinically appropriate.
For providers, the study points to a mixed picture. Online stepped care showed promise as a way to reduce delivery costs and broaden access. At the same time, the greater dropout rate and the self-reported PTSD advantage for CPT indicate that services should not treat a digital first step as universally equivalent to beginning with telehealth therapy.
A targeted, not one-size-fits-all, model
The researchers describe the reduced cost and online nature of the stepped treatments as promising for improving access to PTSD care. The trial’s results support that qualified view: both groups improved, while the stepped approach was cheaper to deliver. Yet the engagement and self-report findings identify a real trade-off that future services and studies will need to address.
More broadly, the work reinforces the original premise of stepped care. The goal is not merely to deliver a cheaper intervention. It is to match people to treatment in a way that preserves meaningful outcomes while reserving higher-intensity support for those who need it. In PTSD care, this trial suggests that such a pathway can work for some participants, but that its success depends on careful design and sustained attention to who may need more support sooner.
This article is based on reporting by Medical Xpress. Read the original article.
Originally published on medicalxpress.com
