The digital CBT-I (dCBT-I) is a self-guided online program replicating the structure and content of standard face-to-face CBT-I, aiming to offer a more accessible treatment for chronic insomnia. It includes video lessons, interactive exercises, and relaxation techniques, with core components such as sleep education, sleep restriction, stimulus control and cognitive restructuring. Supervision is provided through periodic check-ins.

The control group will receive standard face-to-face group-based CBT-I, the current gold-standard treatment for chronic insomnia. Delivered by trained professionals, the intervention includes seven structured sessions covering core components such as sleep education, sleep restriction, stimulus control cognitive restructuring, and relaxation techniques. Sessions last about 90 minutes and aim to improve sleep quality through evidence-based strategies.

The digital CBT-I (dCBT-I) is a self-guided online program replicating the structure and content of standard face-to-face CBT-I, aiming to offer a more accessible treatment for chronic insomnia. It includes video lessons, interactive exercises, and relaxation techniques, with core components such as sleep education, sleep restriction, stimulus control and cognitive restructuring. Supervision is provided through periodic check-ins.

Comparison at Insomnia Severity Index (ISI) questionnaire between the two groups evaluated at baseline and post-treatment.