Table 3.

Univariate analyses of caregiver burden classification of caregivers of patients with ALS (n=120)

Variable	Group	Burden classification			χ2/t	P value
		Mild caregiver burden	Moderate caregiver burden	Severe caregiver burden
Level of disease knowledge	No knowledge	0 (0.0%)	10 (100.0%)	0 (0.0%)	12.577	0.003
	Some knowledge	5 (9.1%)	0 (0.0%)	50 (90.9%)
	Good knowledge	5 (9.1%)	30 (54.5%)	20 (36.4%)
AI score		37.00±4.24	41.88±10.47	56.43±8.91	8.352	0.002
VT (caregiver)		82.50±3.54	56.88±19.26	41.07±22.20	4.198	0.029
Disease severity score		6.00±8.49	18.75±11.04	31.07±12.84	5.305	0.014

AI, anxiety index; ALS, amyotrophic lateral sclerosis; VT, vitality.