Table 4.

Top five scores for symptom severity and age-based comparisons^a.

Symptom	All sample (n = 236)	Age＜65 (n = 118)	Age≥65 (n = 118)	Z	P
Dry mouth	3.0 (3.0, 4.0)	3.0 (2.0, 4.0)	4.0 (3.0, 4.0)	2.39	0.017
Itching	3.0 (2.0, 4.0)	3.0 (2.0, 3.0)	3.0 (2.0, 4.0)	2.02	0.043
Dry skin	3.0 (2.0, 4.0)	3.0 (2.0, 3.0)	3.0 (2.0, 4.0)	0.04	0.965
Feeling tired or lack of energy	3.0 (2.0, 4.0)	3.0 (2.0, 4.0)	3.0 (2.0, 4.0)	2.84	0.005
Trouble staying asleep	3.0 (2.0, 4.0)	3.0 (1.0, 4.0)	3.0 (2.0, 5.0)	2.24	0.025

Note: Data are M (P₂₅, P₇₅). ^a Symptom severity reported using the Dialysis Symptom Index (DSI): top five of 30 symptoms; values denote the median severity of individual symptoms. For comparisons of symptom severity between the two groups, statistical significance was evaluated by the Mann-Whitney analysis of variance test.