Table V.

Psychological Attributes and Perception of Huntington Disease Risk

Survey	Entire Sample	Individuals who never pursued testing	Individuals who eventually pursued testing	Individuals at U.S. Study Sites	Individuals at Canadian Study Sites
Beck Depression Inventory [range 1–50] BDI 0–9 (normal range), BDI 10–15 (mild depression), BDI 16–19 (moderate depression), BDI >20 (severe depression)	4.0 [817]	3.9 [767]	5.3 [50]	3.9 [710]	5.0† [107]
Beck Hopelessness Scale Score [range 0–20]	2.1 [881]	2.0 [803]	3.0‡ [78]	2.1 [770]	2.0 [111]
Miller Behavioral Scale Score [range −16 to 16]	4.2 [789]	4.3 [741]	3.3 [48]	4.2 [684]	4.3 [105]
Optimism Score [range 0–24]	17.2 [749]	17.2 [703]	17.8 [46]	17.3 [648]	16.6 [101]
Tolerance for Ambiguity [range 0–20]	11.0 [741]	11.0 [696]	10.9 [45]	11.1 [641]	10.6 [100]
Existential Well-being [range 0–60]	48.2 [735]	48.1 [691]	50.0 [44]	48.5 [640]	46.6† [95]
Religious Well-Being [range 0–60]	44.1 [723]	44.0 [679]	45.7 [44]	45.0 [629]	38.4‡ [94]
Self-reported probability gene positive [0–100%] at enrollment	44.1 [679]	43.5 [634]	52.0† [45]	44.5 [590]	41.2 [89]
Self reported chance will develop Huntington disease symptoms within 10 years [5 point scale from 0 to 4; higher values indicate more likely]	2.7 [713]	2.7 [669]	3.0† [44]	2.7 [613]	2.6 [100]

Notes: Sample sizes are noted in square brackets. All variables are measured at study enrollment.

^†p<0.05 for comparison with the other group [column to the left]

^‡p<0.01 for comparison with the other group [column to the left]