Utilization and outcomes of transcranial magnetic stimulation and usual care for MDD in a large group psychiatric practice

Background

General psychiatrists’ practice standards vary regarding when to implement transcranial magnetic stimulation (TMS) for care of patients with major depressive disorder (MDD).

Furthermore, few studies have examined real-world utilization and clinical outcomes of TMS.

This study analyzed data from a large, multi-site psychiatric practice to evaluate utilization and outcomes of TMS as well as usual care (UC) for patients with MDD.

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Methods

Depression outcomes for TMS and UC among adult patients at a multi-site psychiatric group practice were examined in this retrospective cohort analysis.

Patients with a primary diagnosis of MDD, PHQ-9?≥?10, and a visit in November 2020 with 6-month follow-up were included and categorized into the TMS or UC cohorts.

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Results

Of 1,011 patients with qualifying PHQ-9 at the baseline visit, 9% (89) received a full course of TMS, and 583 patients receiving UC met study inclusion criteria (339 patients were excluded due to lacking a 6-month follow-up visit or receiving esketamine during the study period).

The TMS cohort had higher baseline PHQ-9 than UC (17.9 vs. 15.5, p?<?.001) and had failed more medication trials (≥?4 vs. 3.1, p?<?.001).

Mean PHQ-9 decreased by 5.7 points (SD?=?6.7, p?<?.001) in the TMS cohort and by 4.2 points (SD?=?6.4, p?<?.001) in the UC cohort over the study period.

Among patients who had failed four or more antidepressant medications, PHQ-9 decreased by 5.8 points in the TMS cohort (SD?=?6.7, p?<?.001) and by 3.2 points in the UC cohort (SD?=?6.3, p?<?.001).

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Conclusions

TMS utilization was low, despite TMS showing significant real-world clinical benefits.

Future research should examine and address barriers to wider adoption of TMS into routine patient care for patients with treatment-resistant MDD.

Wider adoption including routine use of TMS in less treatment-resistant patients will allow statistical comparisons of outcomes between TMS and UC populations that are difficult to do when TMS is underutilized.

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Read the full publication here.

Bastiaens, J., Brown, N., Bermudes, R.A., Juusola, J.L., Bravata, D.M. & Marton T.F. Utilization and outcomes of transcranial magnetic stimulation and usual care for MDD in a large group psychiatric practice. BMC Psychiatry 24, 497 (2024).

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