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. Author manuscript; available in PMC: 2014 Jun 1.
Published in final edited form as: Am J Geriatr Psychiatry. 2013 Mar 13;21(6):509–519. doi: 10.1016/j.jagp.2012.10.022

Table 1.

Means (SD) for demographic and cognitive measures and percent gender for groups divided by diagnosis (AD, DLB) and stage of cognitive impairment (mild, moderate) on the Mini-Mental State Examination (MMSE).

AD DLB

Mild
N=15
Moderate
N=23
Mild
N=11
Moderate
N=8
Age (years) 75.9 (3.6) 78.6 (4.2) 76.0 (4.6) 79.1 (4.4)
Education (years) 14.5 (2.9) 14.8 (3.5) 15.2 (3.9) 15.3 (3.5)
MMSE total score 25.0 (1.6) 17.6 * (3.6) 24.3 (2.6) 15.5 # (3.6)
DRS total score 120.9 (9.0) 99.4 * (16.3) 117.9 (11.9) 89.9 ° (19.5)

Percent Female 39.1 46.7 0.0 50.0

SD = Standard Deviation

AD = Alzheimer’s disease

DLB = Dementia with Lewy bodies

DRS = Mattis Dementia Rating Scale (range: 0-144)

T-tests

AD: Mild versus Moderate Age: p<0.05, t=2.05, df=36

#

DLB: Mild versus Moderate MMSE: p<0.001, t=−6.11, df=17

Mann-Whitney U-tests

AD: Mild versus moderate

*

MMSE: p<0.001, U=0.00

*

DRS: p<0.001, U=36.50

°

DLB: Mild versus Moderate DRS: p<0.01, U=4.50