Mindful Nonreactivity, Anxiety, Depression, and Perceived Stress as Mediators of the Mindfulness Virtual Community Intervention—Pathways to Enhance Mental Health in University Students: Secondary Evaluation of Two Randomized Controlled Trials With Student Participants
Bibliographic record
Abstract
BACKGROUND: Mindfulness-based interventions (MBIs) are widely employed in mental health promotion and treatment. Despite widespread evidence of effectiveness with different populations and delivery modes, there are sparse findings concerning the mechanisms of action in MBIs. OBJECTIVE: This study, based on a secondary evaluation of two randomized controlled trials (RCTs) with student participants, was aimed at understanding mediators of the Mindfulness Virtual Community (MVC) intervention, an 8-week, multi-component, online mindfulness and cognitive-behavioral therapy (M-CBT) intervention. METHODS: Mediation analysis, using structural equation modeling, was used to assess direct and indirect relationships between study group (i.e. intervention versus wait list control) and outcomes. Consistent with the intervention's theoretical perspective and direct effects paths, a model was specified to evaluate whether mindful non-reactivity, as evaluated by the five-factor mindfulness questionnaire, mediated the effect of study group on anxiety and depression (as symptom-driven outcomes), and perceived stress and quality of life (as functional outcomes). The model included additional mediating paths for perceived stress through anxiety and depression, and for quality of life through anxiety, depression, and perceived stress. The model was thereafter extended, adjusting for pre-intervention differences in mindfulness (i.e. observing, describing, activity with awareness, non-judgement, and non-reactivity) facets. RESULTS: Direct (non-mediated) effects indicated statistically significant differences at 8 weeks between the MVC and waitlist control (WLC) groups on depression (-1.65, P=.003), anxiety (-3.29, P<.001), perceived stress (-2.28, P=.001), and quality of life (4.07, P=.003), and the non-reactivity facet of mindfulness (1.55, P=.001) in favor of the MWC intervention. Mediation analysis supported the mediating role of the non-reactivity facet of mindfulness, depression, anxiety and perceived stress through single and sequential mediation paths. Results indicated good fit characteristics for the main (CFI=.988; RMSEA=.052; SRMR=.045) and extended (CFI=.992; RMSEA=.043; SRMR=.036) models. CONCLUSIONS: This research underscores the importance of mindful non-reactivity, depression, and anxiety as key mediators of MVC intervention benefits.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.015 | 0.016 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.004 | 0.006 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.005 | 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 source (direct Gemma or distilled Codex), 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".