Efficacy of Digital Cognitive Behavioral Therapy for Insomnia (CBT-I)

Inclusion Criteria:

i. Youth aged 18 to 25 years (as defined by WHO and evidence on AI mental health chatbots only available for individuals aged 18 years and older)

ii. Online informed consent of participation in the study should be provided

iii. Willing to comply with the requirements of the study protocol

iv. The presence of moderate to severe insomnia measured by a score of 15 or above on the Insomnia Severity Index (ISI)

v. difficulties initiating, maintaining or nonrestorative sleep over a 1-month period

vi. Having access to a smartphone and consistent internet access for their smartphone

vii. Accepting the terms of service and privacy policies of the mobile apps used in the study for the delivery of the intervention

Exclusion Criteria:

i. A history of any sleep disorder(s) (other than insomnia disorder) such as narcolepsy, obstructive sleep apnea, and restless legs syndrome

ii. A history of any mental retardation or neuropsychiatric disorder(s) (other than depression and anxiety disorders as they are the secondary outcomes) such as bipolar disorder, schizophrenia, and substance use disorder

iii. Presence of serious suicidality as evidenced by ideation with a plan or an attempt

iv. Receiving any pharmacological treatment (including sleep promoting agents)

v. Receiving any structured psychotherapy

vi. Having shiftwork and trans-meridian travel in the past 3 months and during the intervention