Table 1.

Inclusion and exclusion criteria.

Inclusion Criteria	Exclusion Criteria
For Patients	For both Patients and Caregivers
•having a diagnosis of stage I to IV of a gastrointestinal (GI) cancer in the past 5 years	•having had a diagnosis of psychosis, major depressive disorder, or bipolar disorder that is not currently treated
•having a consistent sleep partner	•having had substance or alcohol dependency, or active suicidality in the past year
For Caregivers	•currently have narcolepsy or restless leg syndrome
•being a sleep partner of the patient	•both patients and caregivers have an extreme chronotype, or do shift work to have no overlap in sleep schedule between patients and caregivers
For both Patients and Caregivers	•plan trans-meridian travel during the period of data collection blocks
•having at least mild-to-moderate sleep disturbance (PSQI ≥5)	•have hearing or visual impairment, dementia, or cognitive dysfunction
•willing to change sub-optimal sleep habits • 18 years or older
•able to speak/read English at the 5th grade level
•> 4 weeks after surgery, if any, prior to enrollment because surgery affects sleep.