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Table 1 Demographics of the Cohort at Baseline (N = 985)*

From: Loneliness and the rate of motor decline in old age: the rush memory and aging project, a community-based cohort study

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%)
  1. *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.
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