CompletedNot Applicable

Adaptive Messaging to Support Depression Self-Management

United States100 participantsStarted 2025-01-13

Plain-language summary

This is a pilot randomized controlled trial of an adaptive 8-week text messaging intervention for depression self-management. Among 100 individuals with elevated depression symptoms, the investigators will compare the effects of 8 weeks of the adaptive text messaging intervention (n=40) to 8 weeks of a non-adaptive text messaging intervention (n=40), and 8 weeks of a psychoeducation-only intervention (n=20). The investigators will include a 6-month post-treatment follow-up to verify that treatment gains are maintained. Both messaging arms will receive 8 weeks of daily text messaging. Messages will prompt learning and applying cognitive and behavioral self-management strategies. Whereas the non-adaptive messaging system will randomly select daily messaging styles (representing a variety of self-management strategies and message tones), the adaptive messaging system will apply reinforcement learning to select daily messaging styles to maximize user engagement. Text messages will also be used to solicit feedback such as message ratings to inform the reinforcement learning algorithm (if applicable). The psychoeducation control group will receive a few brief text messages per week providing weblinks to access psychoeducation information. The investigators will recruit participants through digital methods (e.g., advertising on social media platforms like Facebook and Instagram). Administration of study measures will occur at baseline, weeks 4 and 8, and 3-month and 6-month follow-up. The primary outcomes is depression symptom severity (PHQ-9). Secondary outcomes are: anxiety severity (GAD-7) and suicidality (DSI-SS). Using an Intention to Treat paradigm, the investigators will test our hypothesis that: H1: Relative to the psychoeducation-only control, messaging interventions will reduce depression (H1a) and anxiety and suicidal ideation (H1b). H2: Relative to non-adaptive messaging, adaptive messaging will reduce depression (H1a) and anxiety and suicidality (H2b). H3: Adaptive messaging will reduce depression relative to non-adaptive messaging by producing greater objective and subjective engagement.

Who can participate

Age range

18 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * 18+ years of age * At least moderate depressive symptom severity (a score of 10 or higher on the PHQ-8) * Has a smartphone * Is able to speak and read English * US citizen or resident Exclusion Criteria: * Reports diagnosis with a severe mental health problem (e.g., psychotic, bipolar) for which participation in this trial is inappropriate * High suicide risk (has ideation, plan, and intent) * Is currently receiving psychotherapy or intends to commence it in the next 8 weeks * Psychiatric medication dose change in the past 4 weeks, or has plans to change the dose of a psychiatric medication

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Patient Health Questionnaire (PHQ-9)

Timeframe: Assessments will be completed at baseline, week 4, week 8, week 20 (3 month follow-up) and week 32 (6 month follow-up).

Trial details

NCT IDNCT06458192

SponsorNorthwestern University

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2025-12-11

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