Develop and test an effective machine learning enabled application-based (app-based) mindfulness intervention for reducing loneliness of Hong Kong Chinese older adults.
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.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
DOUBLE
Enrollment
250
Second-line of coaching (4 weeks): Continue with existing intervention plan
Second-line of coaching (4 weeks): Increase intensity of human coaching
Second-line of coaching (4 weeks): Add a booster session
The Education University of Hong Kong
Hong Kong, Hong Kong
Loneliness
UCLA Loneliness Scale; each item will be rated from 1=Never to 4=Always. Total scores range from 20 to 80
Time frame: Baseline (T0), within 1 week after 1st-line of coaching (T1), within 1 week after 2nd-line of coaching (T2), 3 months after 2nd-line of coaching (T3), 6 months after 2nd-line of coaching (T4)
Loneliness
De Jong Gierveld Loneliness Scale; each item will be rated from 1=Yes to 3=No. Total scores range from 0 to 6, with subscale score ranging from 0 to 3.
Time frame: Baseline (T0), within 1 week after 1st-line of coaching (T1), within 1 week after 2nd-line of coaching (T2), 3 months after 2nd-line of coaching (T3), 6 months after 2nd-line of coaching (T4)
Stress
Perceived Stress Scale; each item will be rated from 0=Never to 4=Very often. Total scores range from 0 to 56.
Time frame: Baseline (T0), within 1 week after 1st-line of coaching (T1), within 1 week after 2nd-line of coaching (T2), 3 months after 2nd-line of coaching (T3), 6 months after 2nd-line of coaching (T4)
Sleep Quality
Pittsburgh Sleep Quality Index; each item will be rated from 0=No difficulty to 3=Severe difficulty. Total scores range from 0 to 21.
Time frame: Baseline (T0), within 1 week after 1st-line of coaching (T1), within 1 week after 2nd-line of coaching (T2), 3 months after 2nd-line of coaching (T3), 6 months after 2nd-line of coaching (T4)
Depression
Patient Health Questionnaire-9; Each item will be rated from 0=Not at all to 3=nearly everyday. Total scores range from 0 to 27
Time frame: Baseline (T0), within 1 week after 1st-line of coaching (T1), within 1 week after 2nd-line of coaching (T2), 3 months after 2nd-line of coaching (T3), 6 months after 2nd-line of coaching (T4)
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No rerandomization, no mindfulness, No MRT
Anxiety
Generalised Anxiety Disorder; each item will be rated from 0=not at all to 3=nearly every day. Total score range from 0 to 21.
Time frame: Baseline (T0), within 1 week after 1st-line of coaching (T1), within 1 week after 2nd-line of coaching (T2), 3 months after 2nd-line of coaching (T3), 6 months after 2nd-line of coaching (T4)
Physical Health
Lawton Instrumental Activities of Daily Living; each item will be rated 0=dependent to 1=independent. Total scores range from 0 to 8.
Time frame: Baseline (T0), 6 months after 2nd-line of coaching (T4)
Physical Health
Activities of Daily Living; each item will be rate from 0=dependent to 5/10=independent. Total scores range from 0 to 100.
Time frame: Baseline (T0), 6 months after 2nd-line of coaching (T4)
Physical Symptoms
Wahler Physical Symptoms Inventory; each item will be rated from 0=almost never agree to 5=agree almost every day. Total score range from 0 to 210.
Time frame: Baseline (T0), 6 months after 2nd-line of coaching (T4)
Chronic Illness
Participants will indicate any presence of chronic illness (e.g., diabetes, asthma, high blood pressure).
Time frame: Baseline (T0), 6 months after 2nd-line of coaching (T4)
Multidimensional Scale of Perceived Social Support
MSPSS evaluates the social support derived from three key sources: family, friends, and significant others. Each item will be rated from 1=Strongly disagree to 7=Strongly agree. Total scores range from 12 to 84.
Time frame: Baseline (T0), within 1 week after 1st-line of coaching (T1), within 1 week after 2nd-line of coaching (T2), 3 months after 2nd-line of coaching (T3), 6 months after 2nd-line of coaching (T4)
Lubben Social Network Scale
LSNS is used to assess the social networks of participants. Each item will be rated 0=None to 5=9 or more. Total scores range from 0 to 30.
Time frame: Baseline (T0), within 1 week after 1st-line of coaching (T1), within 1 week after 2nd-line of coaching (T2), 3 months after 2nd-line of coaching (T3), 6 months after 2nd-line of coaching (T4)