Table 1.

The tools used to measure caregiver burden.

Tool	Number of items	Rating scale	Aspects	Reliability (Cronbach’s α)
Zarit Burden Interview (ZBI) [36]	22	5-point Likert scale (0–4)	Personal stress Role stress	0.85–0.89
Caregiver Reaction Assessment Scale (CRA) [28]	24	5-point Likert scale (1–5)	Self-esteem Inadequate family support Effect on economics Effect on schedule Effect on health	0.70–0.76
Caregiver Burden Inventory (CBI) [67]	24	5-point Likert scale (0–4)	Time dependence Develop of mental issues Physical effects Social life impact Emotional drain	0.90
Caregiver Strain Index (CSI) [45]	13	yes (=1), no (=0)	Occupation Effect on economics Physical effects Social life impact Time domain	0.69
Zarit Caregiver Burden Scale (ZBS) [51]	22	5-point Likert scale (0–4)	Negative emotions Physical effects Social life impact Economic impact	0.91