Software-delivered CBT-I for Insomnia Disorder

Who can take part

• Aged ≥18 years old, no gender limitation
• Own a mobile-phone, access the Internet, and be skilled in using software
• Meet the diagnostic criteria of insomnia disorder in the Diagnostic and Statistical Manual of Mental Disorders (Fifth Edition) (DSM-5)
• Insomnia symptoms appear at least 3 nights per week and last for at least 3 months
• ISI scores ≥ 12
• Volunteer to participate in this experiment and sign a written informed consent

Who cannot take part

• Alcohol or drug abusers (other than nicotine dependence) in the past year
• Unstable usage of medication regimens that affect sleep (changes in type, dosage and method of use within the past 1 month)
• Subjects who have not responded to previous CBT-I
• Generalized Anxiety Disorder Scale-7 (GAD-7) scores ≥ 15
• Confirmed physical diseases that may affect sleep, such as congestive heart failure, chronic obstructive pulmonary disease acute phase, cardiovascular and cerebrovascular disease acute phase, etc
• Current diagnosed neurological or mental illness (major depressive disorder, bipolar disorder, epilepsy, schizophrenia, etc.) that may affect sleep
• Diagnoses of other untreated sleep disorders, such as obstructive sleep apnea, restless leg syndrome (RLS)
• Undergoing other cognitive behavioral therapy for sleep disorders
• Other conditions deemed unsuitable for clinical trials by the investigator
• Patients Health Questionnaire-9 (PHQ-9) scores ≥ 20
• Current thoughts of suicide or self-injury (defined as PHQ-9 9th item score ≥ 1)
• Usual bedtime (when the subject attempts to fall asleep) is earlier than 8 p.m. or later than 2 a.m., or usual waking (arising) time is earlier than 4 a.m. or later than 10 a.m
• Pregnant or lactating women
• Undergoing systematic psychotherapy within the past 3 months
• Night shift workers, travelers across time zones