Table 1 Demographic comparisons between 3D and MDW subjects.

Variable	n	3D (n = 78)	MDW (n = 60)	t value	p value
Age (in years)	138	68.1 (5.65	67.6 (13.06)	0.21	0.83
Gender (% male)	138	0.51 (0.50	0.38 (0.49)	1.52	0.13
Medications (n)	138	10.0 (4.42)	8.7 (3.93)	1.85	0.07
Level of education*	137	2.8 (1.53)	2.8 (1.72)	0.14	0.89

All values are expressed as mean (SD).

^*0, 8th grade or less; 1, some high school; 2, high school completed; 3, some college or vocational; 4, completed associates; 5, completed college; 6, postgraduate; one level of education was unreported.