Table 1 Demographic and clinical data for controls and patients with Huntington's disease.

	Controls	Patients with HD
Male/female	15/2	19/1
Age (years)	49.7 (7.3)	47.9 (7.7)
UHDRS	—	23.1 (13.7)
Duration of illness (years)	—	5.4 (3.6)
CAG repeats	—	43.4 (3.4)
CAG index	—	363 (136)
MMSE	29.2 (1.3)	27.1 (2.4)
IQ	119 (6.1)	115.5 (6.1)
BDI	1.5 (1.7)	6.9 (6.9)

–, test not administered; BDI, Beck Depression Inventory score (maximum score 63, normal range 0–9); CAG, cytosine–adenine–guanine; HD, Huntington's disease; IQ, estimated full‐scale IQ calculated from National Adult Reading Test error score; MMSE, Mini‐Mental State Examination score (maximum score 30); UHDRS, motor subscale score from the Unified Huntington's Disease Rating Scale.

Values are mean (SD).