Table 3.

Reliability and correlation analysis of PUTS.

Reliability	Total sample N = 367	Younger groupN = 230	Older group N = 137	TS groupN = 252
Cronbach's Alpha	0.753	0.762	0.731	0.755
Spearman-Brown	0.822	0.865	0.775	0.813
Correlation analysis between YGTSS and PUTS	0.180*	0.194	0.168	0.269*
Correlation analysis between CY-BOCS and PUTS	0.108	0.159	0.038	0.203*

PUTS, Premonitory Urge for Tics Scale; YGTSS, Yale Global Tic Severity Scale; CY-BOCS, Children's Yale-Brown Obsessive Compulsive Scale;

^*p < 0.05.