Table 4.

Mean Group Differences on Decisional Ability Subscales for Vignette Three

	Score Range	Dementia M (± SD) N=20	Schizophrenia M (± SD) N=20	Comparison M (± SD) N=19	F	Post Hoc
Understanding Disorder	0–8	4.25 (1.83)	4.65 (2.18)	6.11 (1.29)	5.61*	A, B
Understanding Treatments	0–16	9.95 (4.71)	9.80 (4.68)	13.16 (2.71)	4.02*	A, B
Appreciation Distrust	0–4	3.75 (0.55)	2.50 (1.50)	3.95 (0.23)	13.71*	B,C
Appreciation Foresight	0–4	2.60 (1.35)	2.25 (1.41)	3.63 (0.68)	6.91*	A, B
Reasoning Rational	0–4	2.75 (1.41)	2.50 (1.47)	3.89 (0.32)	7.44*	A, B
Reasoning Values	0–4	2.60 (1.27)	1.85 (1.23)	3.74 (0.93)	12.16*	A, B
Naming Choices	0–2	1.45 (0.83)	1.25 (0.85)	1.95 (0.23)	5.06*	B
Communicating A Choice	0–2	1.85 (0.49)	1.65 (0.75)	2.00 (0.00)	2.24

^*P<.05

Note: the following letters indicate significant (p<.05) group differences in post hoc analyses using bonferroni correction.

A. dementia group < comparison group

B. schizophrenia group < comparison group

C. schizophrenia group < dementia group