Table 1

Demographics of the Cohort at Baseline (N = 985)*

Variable

Mean (SD)


Age (years)

79.67 (7.36)

Sex (% male)

N = 245 (24.87%)

Education (years)

14.42 (3.14)

Social Activity

2.61 (0.58)

Social Network Size

6.59(5.83)

Physical Activity (hrs./week)

3.17( 3.71)

Cognitive Activity Score

3.15 (0.69)

Katz Disability

0.20 (0.67)

Global Cognition

0.11 (0.54)

Depressive Symptoms Score

1.33 (1.78)

BMI (kg/m2)

27.35 (5.25)

Vascular Risk Factors (sum)

1.15 (0.80)

Smoking

N = 395 (40.14%)

Diabetes

N = 132 13.40%

Hypertension

N = 603 (61.22%)

Vascular Diseases (sum)

0.35 (0.63)

Myocardial Infarction

N = 112 (11.38%)

Congestive Heart Failure

N = 41 (4.73%)

Claudication

N = 75 (7.61%)

Stroke

N = 82 (8.3%)

Parkinson's Disease

N = 13 (1.3%)


*MMSE: Mini-Mental State Examination (range: 18-30), a higher score indicates a higher level of cognition. Social Activity: Self-reported frequency of participation in six social activities a higher score indicates more frequent participation. Social Activity: Self-reported frequency of participation in 6 items about activities involving social interaction, a higher score indicates more frequent participation; Social Network Size: Self-reported number of children, family, and friends each person had and how often they interacted with them per month Physical Activity: Self-reported frequency of participation in 5 physical activities (hours/week), a higher score indicates more frequent participation. Cognitive Activity: Self reported frequency of participation in 7 cognitive activities, a higher score indicates more frequent participation. Katz Disability: 6 item measures of basic activities of daily living, a higher score indicates greater disability. Global Cognition: Composite measure of cognition based on performances on 18 cognitive tests, a higher score indicates a higher level of cognition. Depressive Symptoms: Modified 10 item CESD scale, a higher score indicates greater depressive symptomatology. BMI: Body mass index: weight in kilograms divided by height in meters squared. Vascular Risk Factors: sum of smoking, diabetes, and hypertension self-reported. Vascular Diseases: sum of myocardial infarction, congestive heart failure, claudication and stroke self-reported.

Buchman et al. BMC Geriatrics 2010 10:77   doi:10.1186/1471-2318-10-77

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