Table 1 Study Measures

Caregiver Outcomes

 CG Anxiety

PROMIS Anxiety Short Form 7a

X

X

X

X

 CG Depression

PROMIS Depression Short Form 8b

X

X

X

X

 CG HRQOL

PROMIS Global Health Scale v. 1.0/1.1

X

X

X

X

 CG Fatigue

PROMIS Fatigue Short Form 7a

X

X

X

X

 CG Burden

Caregiver Reaction Assessment

X

X

Patient Outcomes

 PT HRQOL

FACT-C, FACT-E, FACT-HN, FACT-L (v. 4)

X

X

X

X

 Interrupted radiation treatment course (total number of missed days from treatments)

Radiation Therapy Record

X

Healthcare Utilization Outcomes

 Hospital admissions

Hospital record

X

X

X

 Emergency room visits

Hospital record

X

X

X

 Intravenous fluid use

Hospital record

X

X

X

Cognitive Mediator

 CG self-efficacy for caregiving

Caregiver Inventory

X

X

X

X

Investigator-constructed self-efficacy scale for managing side-effects and specific skills

X

X

X

X

Potential Moderators (Covariates)

 Patient Illness Factors (stage, time since diagnosis, treatment type)

Patient Medical Record

X

 Use of palliative care services

Patient Medical Record

X

X

X

X

 Patient Performance Status

ECOG Performance Status

X

X

X

X

 Care Demands (hours/week spent caregiving)

Survey questions (CG)

X

X

X

X

 Demographic characteristics (race, marital status, employment, socioeconomic status)

Survey questions (CG and PT)

X

 Use of mental health services (support groups, social work, and/or psychologist)

Survey questions (CG and PT)

X

X

X

X