What the study found
In routine primary-care CBT (cognitive-behavioral therapy), people with depression or anxiety showed significant symptom reductions overall. The study also found that higher initial symptom severity was linked to faster improvement, while prior psychiatric care or very long-term psychotherapy was linked to smaller gains.
Why the authors say this matters
The authors conclude that clients with higher baseline severity benefited substantially, which they say supports equitable access to CBT regardless of starting symptom level. They also state that flexible scheduling may be possible because improvement was driven by the total number of attended sessions rather than how often sessions occurred over time.
What the researchers tested
The researchers analyzed session-by-session data from 2,627 clients in a seven-session CBT program for depression and 3,929 clients in a seven-session CBT program for anxiety in primary care. Symptoms were measured at each session with the PHQ-9 for depression and the GAD-7 for anxiety, and changes were examined with pre-post comparisons and linear mixed models.
What worked and what didn't
Symptoms decreased significantly for both groups: depressive symptoms fell by a mean of 4.45 PHQ-9 points and anxiety symptoms by a mean of 4.36 GAD-7 points. Higher starting severity was associated with faster reductions. Prior psychiatric care or previous very long-term psychotherapy were associated with smaller pre-post gains, while waiting time and session frequency were not consistently related to outcomes.
What to keep in mind
The abstract does not describe detailed limitations beyond noting that the findings come from routine primary-care CBT and a seven-session program. The results therefore apply to the settings and measures studied here, and the summary does not provide more information about reasons for the observed associations.
Key points
- Clients in primary-care CBT had significant reductions in depression and anxiety symptoms.
- Higher initial symptom severity was associated with faster symptom reduction.
- Prior psychiatric care or very long-term psychotherapy was linked to smaller gains.
- Waiting time and session frequency were not consistently related to outcomes.
- The authors say improvement was driven by the total number of attended sessions.
Disclosure
- Research title:
- Baseline severity, prior care, and attendance linked to CBT symptom change
- Authors:
- Kasperi Mikkonen, Sakari Lintula, Tom Rosenström, Jari Lahti, Eeva-Eerika Helminen, Samuli I. Saarni, Suoma Saarni
- Institutions:
- Folkhälsans Forskningscentrum, Helsinki University Hospital, Helsinki University Hospital, Hospital District of Helsinki and Uusimaa, Tampere University Hospital, Tampere University Hospital, University of Helsinki, University of Helsinki, University of Helsinki, University of Helsinki
- Publication date:
- 2026-01-21
- OpenAlex record:
- View
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