Table 4 Spearman correlation analysis results between caregiver burden and selected features (n = 75)

1. Caregiver burden

-

-

-

-

-

-

-

-

2. Objective support (points)

-0.078

-

-

-

-

-

-

-

3. Subjective support (points)

-0.013

0.178

-

-

-

-

-

-

4. Utilization(points)

-0.029

-0.030

.237^a

-

-

-

-

-

5. Patient’s Age(years)

-0.153

-0.057

-.290^a

-0.201

-

-

-

-

6. Total medical cost (￥)

-0.076

0.002

-0.013

-0.025

-0.045

-

-

-

7. Informal caregiver’s age (years)

0.018

-0.195

-.326^b

-0.053

.461^b

-0.008

-

-

8. Monthly caregiving (days)

0.265^a

-0.099

-0.183

-0.120

0.061

0.018

.241^a

-

9. Annual household income (￥)

-0.081

0.035

-0.042

-0.164

-0.022

0.012

-0.006

0.039