Home-based transcranial direct current stimulation for major depressive disorder: 6-month follow-up from randomised sham-controlled trial and open-label treatment phases
Bibliographic record
Abstract
Transcranial direct current stimulation (tDCS) is a potential home-based treatment for major depressive disorder (MDD). In our double-blind randomised controlled trial (RCT) (n = 174; UK and USA), a 10-week course of home-based tDCS demonstrated clinical efficacy (clinical response: 58.3 % active treatment arm and 37.8 % sham ( p = 0.017). tDCS was delivered in a bifrontal montage, with anode over left dorsolateral prefrontal cortex (DLPFC) and cathode over right DLPFC. Each session was 30 min, with active stimulation at 2 mA and sham at 0 mA, incorporating brief ramp-up and ramp-down phased. Following the 10-week RCT, all participants were offered active tDCS in a 10-week open-label treatment phase, with 111 participants completing this phase. UK cohort (n = 77 MDD) were invited for additional 3-month and 6-month follow-ups, extending the total study period to 11 months post-randomisation. Participants were able to continue using the tDCS device during follow-up. At least one follow-up visit was attended by 42 MDD participants (27 women). Device usage rates were 59 % at 3-month follow-up and 55 % at 6-month follow-up. Clinical response rate was 64 % at 3-month follow-up and 76 % at 6-month follow-up. Among participants who had shown a clinical response after the open-label phase, 90 % maintained their response at the 6-month follow-up. In summary, long-term follow-up showed high and sustained clinical response rates regardless of continued tDCS device use. • Clinical outcomes were maintained at 3- and 6-month follow-up. • Over half of participants continued with tDCS sessions during follow-up. • Continued tDCS use or no continued use did not significantly affect outcomes. • The treatment was safe and side effects were mild. • Home-based tDCS remained acceptable over the long term follow-up period.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".