Effectiveness and Cost-effectiveness of a Digital Mindfulness-Based Intervention for Psychological Distress Delivered by Trainee Instructors: A Randomized Controlled Trial
In brief
Digital mindfulness cut distress by half a SD and saved $40 per patient
In a Chinese RCT of 1,281 adults with high psychological distress, an 8-week digital mindfulness program delivered by trainee instructors reduced distress by about half a standard deviation versus usual care and improved other mental-health scores. The intervention also lowered average costs by roughly $40 per participant, with high adherence and no serious adverse events, though long-term effects remain unknown.
- Journal
- Psychotherapy and psychosomatics (Q1)
- Published
- 14 August 2026
- Study design
- Randomized controlled trial
- Evidence level
- Level 1, High (CEBM 1b)
- Authors
- Dongyang Chen, Elena Gomzyakova, Yutian Gu, Yuzhuo Zhang, Stefan G Hofmann, Xinghua Liu
- PMID
- 42599846
- DOI
- 10.1159/000553463
Why clinicians should know about it
- Picked for Psychiatry and Mental Health (top studies of the week, 16 August 2026): RCT of digital mindfulness intervention for distress
Abstract
INTRODUCTION: The high prevalence of psychological distress and shortage of mental health professionals create a service gap for highly symptomatic populations exceeding routine care capacity. We evaluated a hybrid digital mindfulness intervention (MIED) delivered via a train-the-trainer (TTT) model for reducing psychological distress and providing economic value. METHODS: In this randomized controlled trial in China, adults with significant psychological distress (Kessler-10 score ≥ 22) were assigned (1:1) to 8-week MIED plus services as usual (SAU), or SAU alone. Primary outcomes were 8-week trajectory of psychological distress. Secondary outcomes included mental health indicators and short-term cost-utility. Intention-to-treat analyses used generalized estimating equations (GEE). RESULTS: Between Nov 1 and 8, 2024, 1,281 participants were assigned (MIED: n = 641; SAU: n = 640). GEE revealed a significant Group × Time interaction for distress (χ² (4) = 143.611, p < 0.001), with the intervention group demonstrating greater reductions than SAU (Cohen's d = -0.526 at Week 8). Secondary indicators also improved (p < 0.001). From a societal perspective, MIED incurred lower mean costs (993 CNY [~$140] vs 1,326 CNY [~$186]; p < 0.001) with 95% probability of cost-effectiveness at 9,246 CNY [~$1,299] per quality-adjusted life-year. Adherence was high (mean, 6.04 of 8 sessions). No severe adverse events were identified, and self-reported meditation-related adverse experiences declined over time within the intervention group. CONCLUSIONS: Compared with SAU, TTT-delivered MIED is a safe, effective, and potentially cost-saving adjunct strategy for scaling mindfulness interventions in resource-constrained systems. Future research should evaluate long-term sustainability beyond 8 weeks.
Abstract as published, via PubMed.
For healthcare professionals. The summary is generated by AI from the published abstract, and the evidence level is assigned automatically from the study design on the Oxford CEBM hierarchy. Neither is medical advice. Read the full paper before changing practice.