Cronbach coefficient alpha of CGSQ and subscales for control group and patient group
| Global scale | Subscale OCGS | Subscale ISCGS | Subscale ESCGS | |
| Control group | 0.901 | 0.877 | 0.775 | 0.698 |
| Patient group | 0.952 | 0.958 | 0.953 | 0.845 |
CGSQ, Caregiver Strain Questionnaire; ESCGS, Externalized Subjective Caregiver Strain; ISCGS, Internalized Subjective Caregiver Strain; OCGS, Objective Caregiver Strain.