Table 1 Concepts and measurements of quality of life

Quality of life

1. Caregiver quality of life index – cancer [28]

1.1) Stress, 2) Anxiety, 3) Depression, 4) Health [7]

2. Multidimensional quality of life scale – cancer [33]

2.1) Physical health, 2) Emotional health,

3. Quality of life index [32]

3) Use of psychotropic drugs,

4) Caregivers' social life,

5) Financial status [30]

1.1) Depression, 2) Life satisfaction, 3) Health [12]

Adaptational outcome (Adaptation)

2.1) Caregiver's level of life satisfaction,

2) Depression

3) Subjective symptoms of stress [13]

Mental health outcome

1.1) Depression, 2) Quality of life [29]

Life satisfaction

1. 8-item, open-ended questionnaire [21]

Stress outcome (stress response, distress)

1. Brief symptom inventory [34]

1.1) Yielding of role, 2) Physical health, 3) Anxiety [24]

2.1) Anxiety, 2) Depression, 3) Stress [25]

3.1) Burden, 2) Depression, 3) Anxiety [26]

Emotional (Psychological) distress

1. Profile of mood states – short form [22]

2. General health questionnaire [23]

Health

1. the Medical Outcome Study 36-item

1.1) Caregiver mental health,

Short Form Health Survey [31]

2) Caregiver physical health [14]

Caregiving Burden

1. Zarit burden scale 27

Depression

1.1) depression, 2) strain [15]