Table 2.

Adjusted differences in SF-6D utility according to caregiver sociodemographic characteristics and care recipient treatment group

	Differences	95% Lower CI	95% Upper CI	p value
Age (Y)	−0.002	−0.007	0.002	0.34
Gender	−0.04	−0.13	0.05	0.36
Care recipient treatment	−0.08	−0.18	0.01	0.09
Health System	−0.05	− 0.15	0.06	0.36
Education	0.04	−0.06	0.13	0.44
Private health insurance	0.006	−0.09	0.10	0.89
Care recipient length of kidney disease	−0.08	−0.26	0.10	0.37
Length of care	0.07	−0.05	0.19	0.23
Relationship type	-0.0006	−0.12	0.12	0.99

The reference category for the difference are as follow: Age (every unit increase), Gender (male - female), Care recipient treatment (conservative care - dialysis), Country (UK-Australia), Education (completed high school or tertiary education - attended some high school or lower levels), Private health insurance (Yes - No/Unknown), Care recipient length of kidney disease (≤2 years - > 2 years), Length of care (0–2 years - > 2 years), Relationship type (Spouse/Partner – Child, sibling and other). SF-6D - Short Form six dimensions. CI - Confidence interval