Table 4.

Change in the MCS score with age category

Parameter	Coefficient (95% CI)	p value
Age category
60–69 y.o.	[Reference]
70–79 y.o.	−1.1 (–2.2 to −0.1)	0.04
≥80 y.o.	−3.6 (–6.0 to −1.3)	0.002
Years from study entry	−0.5 (–1.2 to 0.1)	0.1
Baseline MCS score	0.5 (0.5 to 0.6)	<0.001
Gender, male	1.8 (0.7 to 2.9)	0.001
Dialysis vintage, year	0.03 (-0.04 to 0.1)	0.4
Intercept	22.1 (19.3 to 25.0)	<0.001
Intraclass correlation	0.38 (0.29 to 0.48)

CI, confidence interval; y.o., years old; MCS, mental component summary.