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. 2024 Jan 5;11:1304572. doi: 10.3389/fpubh.2023.1304572

Table 1.

Sample description (n = 3,372).

COVID-19 serology status N Percentage
Negative 870 25.8%
Positive 934 27.7%
Alive without serology test 1,162 34.5%
Deceased 406 12.0%
N Mean (SD) Median (Range) p-valuea
Cohort derived dementia probability 3,372 0.157 (0.161) 0.095 (0.008–0.89) <0.001
Age 3,372 67.14 (10.84) 66 (50–115) <0.001
CES-D score 3,363 14.56 (9.35) 13 (0–51) 0.003
N Percentage p-valuea
Self-identified sex
Male 1,485 44.0% <0.001
Female 1,887 56.0%
Employment status
Not working or retired 2,913 86.4% <0.001
Employed or home manager 452 13.40%
Missing 7 0.2%
Education attainment
No formal education 1,574 46.7% 0.002
Some primary (1–7 years) 1,226 36.4%
Some secondary (8–11 years) 330 9.8%
Secondary or more (12+ years) 234 6.9%
Missing 8 0.2%
Household wealth quintile
Q1 (Poorest) 679 20.1% 0.07
Q2 658 19.5%
Q3 638 18.9%
Q4 679 20.1%
Q5 (Wealthiest) 718 21.3%
HIV status
Negative 2,520 74.7% 0.02
Positive 722 21.4%
Missing 130 3.9%
Hypertension status
Not hypertensive 852 25.3% 0.01
Hypertensive 2,499 74.1%
Missing 21 0.6%
Diabetes status
Not diabetic 2,668 79.1% <0.001
Diabetic 600 17.8%
Missing 104 3.1%

ap-values correspond to Chi-Squared tests for categorical variables and ANOVA tests for continuous variables.