Journal of Aging Research / 2012 / Article / Tab 3

Research Article

Dynamic Associations of Change in Physical Activity and Change in Cognitive Function: Coordinated Analyses of Four Longitudinal Studies

Table 3

SLS participant characteristics.

MeasureYear of testing
Baseline
( 𝑁 = 1 6 5 8 )
Year 7
( 𝑁 = 9 4 0 )
Year 14
( 𝑁 = 4 4 7 )
Year 21
( 𝑁 = 1 8 1 )
M (SD)M (SD)M (SD)M (SD)

Retention from previous testing (%) 56.747.640.5
Age67.1 (8.2)73.0 (7.3)78.9 (6.4)81.9 (4.9)
Education14.6 (2.9)14.7 (2.8)14.8 (2.7)14.8 (2.8)
Sex, female ( 𝑛 (%))862 (52)507 (54)257 (57)108 (60)
Reasoning15.6 (5.8)15.2 (5.6)14.3 (5.5)14.0 (5.3)
Fluency 38.5 (12.8)37.5 (13.1)36.7 (12.7)38.8 (14.5)
Memory 12.5 (4.0)12.0 (4.1)11.5 (4.2)11.7 (3.9)
Semantic knowledge 25.0 (6.7)25.3 (6.6)25.8 (6.2)25.8 (5.9)
Physical activity1.0 (1.1)1.8 (1.1)1.7 (1.0)1.6 (0.9)
Physical activity Changeβ€”βˆ’0.1 (1.1)βˆ’0.2 (1.1)βˆ’0.0 (1.1)

M: mean, SD: standard deviation. The scoring ranges for each measure with a defined upper limit are as follows: education: 0–20, reasoning: 0–30, memory: 0–20, vocabulary: 0–36, physical activity: 0–4.