Revisiting the structure of the Yale Global Tic Severity Scale (YGTSS) in a sample of Chinese children with tic disorders

Table 1 The Clinical Characteristics for Total Sample and Different Group (N = 367)

	Min	Max	Mean	SD	Skewness	Kurtosis
Age	5	16	9.22	2.056	0.586	−0.004
Age of illness	2	14	7.28	2.130	0.383	0.063
DOI	0.04	9	1.93	1.72	1.158	0.945
Motor Numbers	0	5	3.81	1.135	−1.909	4.439
Motor Frequency	0	5	3.51	1.377	−1.079	0.386
Motor Intensity	0	5	2.66	0.844	−1.474	3.189
Motor Complexity	0	5	1.80	1.194	0.042	−1.309
Motor Interference	0	4	1.01	0.401	1.340	12.159
Motor Total	0	22	12.78	4.069	−1.505	3.028
Phonic Numbers	0	5	1.94	1.700	−0.113	−1.688
Phonic Frequency	0	5	1.80	1.793	0.351	−1.475
Phonic Intensity	0	4	1.58	1.396	−0.052	−1.647
Phonic Complexity	0	4	0.34	0.586	2.301	8.438
Phonic Interference	0	3	0.60	0.544	0.224	−0.305
Phonic Total	0	19	6.25	5.546	−0.024	−1.579
Motor and photic Total	6	38	19.03	6.501	0.224	−0.904
Impairment Total	0	30	2.64	4.886	1.766	3.183
YGTSS Total	6	63	21.64	8.954	0.885	1.362
PUTS Total	9	26	12.81	3.169	0.533	0.425
Compulsive Behaviors	0	17	2.68	3.726	0.961	−0.373
Obsessive Thoughts	0	14	1.30	2.906	2.239	4.120
CY-BOCS Total	0	27	3.93	5.153	1.335	1.787

Note: Min Minimum, Max Maximum, SD Standard Deviation, DOI Duration of Illness, YGTSS Motor Score Yale Global Tic Severity Scale Total Motor Tic Score, YGTSS Phonic Score Yale Global Tic Severity Scale Total Phonic Tic Score, YGTSS Total Score Yale Global Tic Severity Scale Global Severity Score, Impairment Score Yale Global Tic Severity Scale Overall Impairment Score, PUTS Total Premonitory Urge for Tics Scale Total Score, CY-BOCS Total Children’s Yale-Brown Obsessive Compulsive Scale Total Score

ISSN: 1471-244X