Table 3 Descriptive statistics for subjects included in analyses versus those excluded owing to missing data at 1995 follow-up

VariableSubjects with complete 1995 data, n = 500Died by 1995, n = 273Subjects with missing 1995 data, n = 416p Value for differences between groups
Values are means (SD) or percentages. The p values reflect F tests for continuous variables and χ2 tests for categorical variables. Where overall test was significant, groups with the same superscript have significant post hoc differences between them.
IL-6 = interleukin-6; HBA1c = hemoglobin A1c.
Cognitive scores, 198854.5 (9.6)10,1151.5 (10.3)1151.9 (9.8)100.001
    % low44.612,1358.41356.1120.001
Change in cognitive score, 1988–1995−4.05 (9.2)−3.43 (8.0)0.4
    % declined33.633.30.9
IL-6, pg/mL4.39 (5.3)145.68 (6.6)14,153.77 (4.4)150.002
    % middle tertile33.01630.216,1737.617
    % top tertile32.41643.216,1726.0170.01
Age, y74.2 (2.7)1874.7 (2.7)18,1974.1 (2.7)190.01
Men, %42206220,2137210.001
Race, % nonwhite1818210.5
Education, y10.8 (3.2)2210.2 (3.4)2210.6 (3.3)0.03
Av. annual income, $16,57515,23213,7910.006
(12,814)23(12,095)(11,601)23
Body mass index, kg/m226.1 (4.2)25.7 (4.2)26.2 (4.2)0.3
Average HBA1c, %6.8 (1.9)7.1 (2.3)246.6 (1.3)240.02
Any alcohol last mo, %442542263325,260.003
Ever smoker, %48276427,2849280.001
Activity score22.9 (26.3)2918.0 (25.6)2920.0 (27.4)0.04
Diabetes mellitus, %1117130.08
Cancer, %18223015300.05