Table 7. Reportable events within the COHORT study by group, 2006–2009.

	Groups that carry an expanded allele			Groups that do not carry an expanded allele
	Individuals with clinically diagnosed HD[n = 930]	First-degree relatives who pursued genetic testing and carry an expanded allele[n = 248]	First-degree relatives who did not pursue genetic testing and carry an expanded allele[n = 112]	First-degreerelatives who did not pursue genetic testing and do not carry an expanded allele[n = 224]	First-degree relatives who pursued genetic testing and do not carry an expanded allele[n = 41]	Spousesand caregivers[n = 430]
Suicide [n (%)]	1 (0.1)	0	0	0	0	0
Suicide attempt [n (%)]	9 (1.0)	2 (0.8)	0	0	0	0
Deaths other than suicide [n (%)]	18 (1.9)	1 (0.4)	0	0	0	0
Premature withdrawal [n (%)]	29 (3.1)	4 (1.6)	0	4 (1.8)	0	13 (3.0)

COHORT = Cooperative Huntington Observational Research Trial; HD = Huntington disease.