TABLE 1.

Demographic data for the HDQLIFE participants

Variable	Premanifest, n = 204	Early, n=198	Late, n = 125	All, N = 527
Age, y; M (SD)a	42.7 (12.0)	51.4 (12.7)	54.7 (12.0)	48.8 (13.2)
Sex
Female	65.4	53.5	57.6	59.0
Male	34.6	46.5	42.4	41.0
Ethnicitya
Not Hispanic or Latino	92.7	92.9	96.8	93.7
Hispanic or Latino	1.5	4.6	0.8	2.5
Not provided	5.9	2.5	2.4	3.8
Racea
White	97.5	96.5	92.8	96.0
African American	0.0	2.0	6.4	2.3
Other	2.0	1.5	0.0	1.5
Unknown	0.5	0.0	0.8	0.2
Education, y; M (SD)a	15.9 (2.9)	14.7 (2.8)	14.2 (2.6)	15.1 (2.9)
Marital statusa
Single, never married	15.8	15.2	11.8	14.6
Married	67.4	52.9	61.3	60.5
Separated/divorced	13.8	25.1	23.5	20.4
Widowed	0.0	2.6	3.4	1.8
Living with partner	3.0	4.2	0.0	2.7
Years since diagnosis		n = 154	n =75	N = 230
M (SD)	-	3.14 (3.74)	5.99 (4.62)	4.05 (4.25)
CAG repeatsa	n = 190	n = 145	n = 56	N = 391
M (SD)	42.2 (2.9)	43.1 (3.9)	44.4 (6.6)	42.9 (4.1)

Entries in the table represent percentage of participants unless otherwise specified. Premanifest participants (M = 42.7, SD = 12.0) were significantly younger than early stage (M = 51.4, SD = 12.7), who were significantly younger than late-stage participants (M = 54.7, SD = 12.0; F_{2, 524} =44.25, P< 0.0001); early-stage (M = 14.7, SD = 2.8) and late-stage (M = 14.2, SD = 2.6) participants had 1 to 1.5 years less education relative to premanifest HD participants (M = 15.9 years, SD = 2.9; F_{2, 502} =15.78, P < 0.0001). The late-stage group had more African Americans than the early-stage and premanifest groups (Fisher’s exact P = 0.0005); the early-stage group had fewer married participants than the premanifest or late-stage groups, and the premanifest group had fewer widowed participants than the manifest groups, χ²(8, N = 527) = 21.9, P = 0.0051; there were marginal differences for gender, χ²(2, N = 527) = 5.27 (P = 0.07), and ethnicity (Fisher’s exact P = 0.06).

^aSignificant group differences for this variable.

M, mean; SD, standard deviation.