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Table 2 Baseline characteristics of progressors vs. non-progressors

From: The Alzheimer’s Prevention Initiative Composite Cognitive Test: a practical measure for tracking cognitive decline in preclinical Alzheimer’s disease

Characteristic

Non-progressors (N = 989)

Progressors (N = 868)

Overall (N = 1857)

p value

Age

 Mean (SD)

74.5 (7.4)

77.5 (6.8)

75.9 (7.3)

< 0.0001

Gender

 Male

24.2%

29.3%

26.5%

< 0.05

 Female

75.8%

70.7%

73.5%

 

Race

 Native American, Indian

0.3%

0.1%

0.2%

< 0.05*

 Black, Negro, African-American

21.9%

16.6%

19.4%

 

 White

77.6%

82.7%

80.0%

 

 Asian or Pacific Island

0.1%

0.5%

0.3%

 

 Missing

0.1%

0.1%

0.1%

 

Education (years)

 Mean (SD)

15.9 (3.8)

16.3 (3.7)

16.1 (3.8)

< 0.05

APOE4 carrier status

 Carrier

17.0%

23.3%

19.9%

< .0001

 Non-carrier

62.0%

69.9%

65.7%

 

 Missing

21.0%

6.8%

14.4%

 

Baseline MMSE

 Mean (SD)

28.9 (1.3)

28.3 (1.7)

28.6 (1.6)

< 0.0001

Baseline APCC

 Mean (SD)

65.5 (7.1)

61.6 (7.1)

63.7 (7.4)

< 0.0001

  1. *p value for race is White vs. other