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. Author manuscript; available in PMC: 2010 Dec 1.
Published in final edited form as: Arch Neurol. 2009 Dec;66(12):1476–1481. doi: 10.1001/archneurol.2009.272

Table 1.

Sample characteristics of [11C] PIB positive and negative groups*

Negative group
(n = 106)		 Positive group
(n = 29)		 P values
Age at amyloid imaging, y 74.3 (6.2) 75.6 (6.3) .30
Education, y 15.5 (2.6) 15.8 (3.7) .57
MMSE at amyloid imaging 28.8 (1.2) 28.4 (1.8) .29
Women, % 68 62 .55
APOE > 1 ε4, % 24 65 <.0001

Abbreviations: MMSE, Mini Mental Status Exam;16 APOE, apolipoprotein E.

*

Values are expressed as mean (SD) unless otherwise indicated.