Table 2.

Multiple linear regression analysis of factors influencing the caregiver burden score of caregivers of patients with ALS (n=120)

ALS	Independent variables	Regression coefficients	SE	Standardised regression coefficient	T value	P value
Personal strain	Constant	12.987	4.556	—	2.851	0.009
	AI score	0.451	0.089	0.734	5.074	<0.001
Role strain	Constant	−3.205	3.315	—	−0.967	0.344
	AI score	0.389	0.065	0.789	6.014	<0.001
Total burden score	Constant	−15.477	13.584	—	−1.139	0.268
	AI score	1.068	0.200	0.777	5.342	<0.001

Confounding factors: health status, presence of care workers or nannies, level of disease knowledge, anxiety classification, functional level classification.

AI, anxiety index; ALS, amyotrophic lateral sclerosis.