About this trial
Poor sleep is common among Asian Americans. Untreated sleep problems increase the risk of chronic diseases, cognitive decline, and mortality. Cognitive behavioral therapy for insomnia (CBTI) is considered the first-line treatment for chronic sleep problems and has demonstrated significant improvement in sleep health among older adults. However, existing CBTI is built upon Western culture, making it challenging to apply for Asian immigrants who maintain close ties to their native cultures that shape and influence their sleep habits. Addressing the lack of availability of a culturally adapted sleep intervention program is the first step to filling the gap in sleep health disparity among Asian immigrants.
This study aims to pilot test the feasibility and the preliminary efficacy of a culturally adapted sleep intervention program among older Korean immigrants with poor sleep, one of the fastest-growing immigrant groups in the United States with limited access to mainstream sleep therapies.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Korean immigrants (i.e., being a resident of the United States with a birthplace in Korea)
Able to speak, read, and write in Korean
Aged at least 60 years
Have a score of at least 15 on a Korean version of the Insomnia Severity Index
Disqualifiers
Those who are bedbound
Those who do not meet the Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-5) criteria for insomnia disorder
Those who have an untreated apnea-hypopnea index (AHI) at least 15 (moderate obstructive sleep apnea) and Epworth Sleepiness Scale (ESS) at least 11 (indicating mild sleepiness) OR AHI is equal to or greater than 30 (irrespective of ESS)
Trial design
Parallel
Treatments tested in this trial
CBT-I based sleep intervention
BehavioralA multicomponent behavioral sleep program, consisting of sleep compression, stimulus control, sleep hygiene, relaxation, daily physical activity, and light exposure
Sleep Education
BehavioralThis group will receive information about sleep and aging, but without specific or individualized recommendations
Treatment groups
Trial outcomes
Primary outcomes
Objective Sleep Efficiency
Nighttime sleep efficiency (i.e., mean percent of time in bed spent asleep at nighttime) will be calculated from 7 consecutive days and nights of wrist actigraphy (Scores range from 0 to 100%, with higher values indicating better objective sleep quality)
Subjective Sleep Quality
Total score on the Korean version of the Insomnia Severity Index (ISI) will be used as a measure of subjective sleep (Scores range from o to 18, with lower values indicating better subjective sleep quality)
Secondary outcomes
Acceptability of the Intervention
Focus group interviews will be conducted to collect the benefits and challenges of following the sleep intervention program
Other outcomes
Feasibility of Recruitment
The number of participants approached who agreed to participate will be measured
Feasibility of Randomization and Retention
The number of participants lost at a post-treatment assessment will be measured
Adherence to the Intervention
The total number of sessions and the percentage of days that participants met goals for recommendations throughout the intervention program will be measured
Interventionist Adherence
The percentage of completion of delivery of each component in sessions throughout the intervention program will be measured
Sponsors and contacts
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University of California, Los Angeles
Lead sponsor
National Institute on Aging (NIA)
Collaborator