Table 1.

Participant demographics and A-T participant clinical characteristics. A total of 30 A-T and control participants completed the study. A-T participants are ordered by ascending age and age groups [36]

Diagnosis	n		Age				Sex				Handedness
			Median		Range		Male		Female		R		L
A-T	15		10		6–18		9		6		14		1
Control	15		11		4–5		9		6		14		1
BARS
Age group	A-T participant	Left arm (0–4)	Right arm (0–4)	Left leg (0–4)	Right leg (0–4)	Gait (0–8)	Oculomotor (0–4)	Dysarthria (0–4)	Scaled total (0–36)	Clinical phenotype	Hyperkinetic movements (tics, chorea, myoclonus, ballismus, arrhythmic adventitious movements)		Tremor/rhythmic movements
											Limbs	Face, head, trunk	Limbs	Face, head, trunk
Middle childhood (6–11y)	1	2	2	2.5	2.5	2.5	1	–	14.4	Classic	Y	Y	N	N
	2	1	1	2.5	2.5	3	1	2	13	Classic	Y	Y	N	N
	3	0.5	0.5	2.5	2.5	2.5	1	–	11.0	Classic	N	N	N	N
	4	3	2.5	2.5	2.5	7	1	3.5	22	Classic	Y	Y	N	N
	5	3	2	3.5	3.5	6.5	1.5	3	23	Classic	Y	Y	Y	N
	6	1.5	1	2.5	1.5	2.5	1	2	12	Classic	Y	Y	N	N
	7	3	2.5	3	2.5	7	1.5	3	22.5	Classic	Y	Y	N	N
	8	3	2.5	2.5	2.5	4.5	1	2.5	18.5	Classic	Y	Y	N	N
	9	3	2.5	2.5	–	6	1	3	20.8	Classic	Y	Y	N	N
Early adolescence (12–18y)	10	3	3	2.5	3	6.5	2	3	23	Classic	Y	Y	N	N
	11	2.5	2.5	3.5	3	5	1	2.5	20	Classic	Y	Y	N	N
	12	2	2	2.5	2.5	4	1	2	16	Classic	Y	Y	N	Y
	13	2	2	2	2	7	1	2	18	Classic	Y	Y	Y	N
	14	3.5	3	3.5	3.5	7	1.5	2.5	24.5	Classic	Y	Y	Y	Y
	15	3	2.5	4	4	8	1	3	25.5	Classic	Y	Y	N	N