Skip to main content
. Author manuscript; available in PMC: 2013 Nov 25.
Published in final edited form as: Neuropsychology. 2007 Jul;21(4):10.1037/0894-4105.21.4.401. doi: 10.1037/0894-4105.21.4.401

Table 2.

Descriptive Characteristics of the Participants

Age range (years)
Study and characteristic 18–39 40–59 60–97 All
Study 1
N 30 30 30 90
 Age 23.2 (4.2) 50.3 (5.5) 69.7 (8.3) 47.8 (20.1)
 % women 47 80 60 62
 Self-rated health 1.8 (0.8) 2.2 (0.9) 2.4 (0.8) 2.2 (0.8)
 Years of education 14.6 (1.5) 15.6 (2.8) 15.5 (2.7) 15.2 (2.4)
Study 2
N 373 593 634 1,600
 Age 26.6 (6.3) 50.6 (5.3) 71.5 (7.9) 53.3 (18.6)
 % women 63 73 58 65
 Self-rated health 1.6 (0.8) 1.8 (0.9) 2.0 (0.9) 1.8 (0.9)
 Years of education 15.1 (2.3) 15.8 (2.6) 16.2 (2.9) 15.8 (2.7)
Study 3
N 10 19 22 51
 Age (at T1) 29.8 (6.4) 53.5 (4.3) 70.9 (7.1) 56.4 (16.5)
 % women 30 68 64 59
 Self-rated health (at T1) 1.7 (0.9) 2.0 (0.8) 2.3 (0.9) 2.0 (0.9)
 Years of education (at T1) 16.0 (2.3) 15.7 (1.5) 14.1 (4.1) 15.1 (3.1)
 Retest interval (days) 597 (157) 563 (150) 557 (157) 567 (151)

Note. Numbers in parentheses are standard deviations. Health is a self-rating on a scale ranging from 1 for excellent to 5 for poor. T1 refers to the first measurement occasion.