Table 3. Components of caregiver burden assessed by different burden instrument utilized.
| PCB | ZBI-22 | ZBI-SF | Scale for caregiver burden | Caregiver strain index | |
| Time/schedule | X | X | X | X | |
| Physical health | X | X | X | X | X |
| Mental/psychosocial health | X | X | X | X | X |
| Finance | X | X | X | X | |
| Sleep | X |
Components of caregiver burden are selected based on established domains for each burden instrument or based on the items or questions asked.
Abbreviations: PCB, perceived caregiver burden; ZBI-22, 22-item Zarit burden interview; ZBI-SF, Zarit burden interview–short form.