NCT07308613

Developing and Testing a Machine Learning Enabled Mindfulness Intervention for Reducing Loneliness Among Hong Kong Chinese Older Adults

Developing and Testing a Machine Learning Enabled Mindfulness Intervention for Reducing Loneliness Among Hong Kong Chinese Older Adults: A Hybrid Experimental Design Study

• Status: Not Yet Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 250 (estimated)
• Sponsor: Education University of Hong Kong · Academic / Other
• Sex: All
• Age: 65 Years
• Healthy volunteers: Accepted

Summary

Develop and test an effective machine learning enabled application-based (app-based) mindfulness intervention for reducing loneliness of Hong Kong Chinese older adults.

Detailed description

This study will utilize a hybrid Sequential Multiple Assignment Randomized Trial-Micro Randomized Trial (Hybrid SMART-MRT) to: 1) evaluate the effectiveness of a single-session intervention (SSI) of mindfulness on reducing loneliness; 2) identify the optimal first-line coaching approach after the SSI of mindfulness; 3) examine whether increasing the intensity of human coaching or adding a telephone-based human-delivered booster session will benefit participants who do not respond to the first-line coaching; 4) determine whether sending push notifications increases the engagement of our app-based coaching, by comparing its results with those of no push notification; 5) determine whether sending a recommended activity increases the engagement of our app-based coaching, by comparing its results with those of no recommended activity; and 6) determine whether sending a personalized motivational message increases the engagement of our app-based coaching, by comparing its results with those of a standard motivational message.

Conditions

• Loneliness

Interventions

Type	Name	Description
BEHAVIORAL	Mindfulness - Continue	Second-line of coaching (4 weeks): Continue with existing intervention plan
BEHAVIORAL	Mindfulness - Enhance human coaching	Second-line of coaching (4 weeks): Increase intensity of human coaching
BEHAVIORAL	Mindfulness - Booster	Second-line of coaching (4 weeks): Add a booster session
BEHAVIORAL	Active Control	No rerandomization, no mindfulness, No MRT

Timeline

• Start date: 2026-05-01
• Primary completion: 2026-12-31
• Completion: 2027-12-31
• First posted: 2025-12-29
• Last updated: 2026-03-19

Locations

1 site across 1 country: Hong Kong