Table 1.

Inclusion/Exclusion criteria.

Inclusion Criteria	Exclusion Criteria
Family members of the enrolled patient participants in the parent study as identified by the patient >=18 years old Able to read and speak English Non-professional, un-paid caregiver Identified by patient and/or self as providing the majority of support and visitation Plans to visit > 3 days/week during ICU staya	Severe uncorrected hearing lossb (inability to hear to the audio recording) Self-reported diagnosis of dementia or Alzheimer’s disease Self-reported major psychiatric disorder (bipolar disorder, schizophrenia) or substance abuse requiring inpatient treatment within the last 12 monthsc Unreliable telephone accessd (for follow-up assessment)

^afor participants’ exposure to the intervention.

^bbecause the intervention was based on the audio recording feature of the communication tool.

^cthe main purpose of the study was to assess psychological symptoms of participants.

^dreliable telephone access is required for follow-up assessment of participants’ symptoms.