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Table 2 Population characteristics of IMID and Non-IMID respondents at study index in 2009, the health and retirement study

From: No increased risk of Alzheimer’s disease among people with immune-mediated inflammatory diseases: findings from a longitudinal cohort study of U.S. older adults

Population Characteristic

IMID Negative (n = 2671)

IMID Positive (n = 171)

p

Age 2009 (mean, SD), years

76.9 (SD 7.7)

74.9 (SD 7.8)

*0.001

Sex (n, %)

  

*0.002

 Male

1124 (42.1%)

51 (29.8%)

 

 Female

1547 (57.9%)

120 (70.2%)

 

Race (n, %)

  

0.52

 White/Caucasian

2396 (89.7%)

156 (91.2%)

 

 Non-White

275 (10.3%)

15 (8.8%)

 

Education (n, %)

  

0.15

 Less than High School

526 (19.7%)

29 (20.0%)

 

 High School or Equivalent

1486 (55.6%

108 (63.1%)

 

 Two Year College or More

659 (24.7%)

34 (19.9%)

 

APOE e4 (n, %)

  

0.67

 No Copies

2053 (76.9%)

129 (75.4%)

 

 One or Two copies

618 (23.1%)

42 (24.6%)

 
  1. Continuous measures tested with t-test of equal variance
  2. Categorical measures tested using Pearson’s Chi-Square
  3. IMID Immune-Mediated Inflammatory Disease
  4. APOE e4 Apolipoprotein e4
  5. * Denotes statistically significant p-value at .05 alpha