Project

Number of Projects

t

I²/%

Merge Model

Meta Analysis Results

OR

95%CI

p

ApoE

11

11.4

21

fixed

3.42

2.75 - 4.26

0.24

Gender

10

0.15

96

random

2.48

0.54 - 2.04

0.88

Education level

8

12.49

18

fixed

1.66

2.15 - 2.86

0.29

Smoking history

11

0.72

87

random

1.17

0.77 - 1.78

0.98

Drinking history

11

1.62

91

random

1.52

0.92 - 2.53

0.11

Diabetes

7

0.03

82

random

0.99

0.60 - 1.63

0.98

Brain trauma

6

5.52

98

random

2.63

1.86 - 3.70

p < 0.00001

Family history of dementia

5

0.17

97

random

3.37

0.13 - 11.54

0.87

Negative life events

2

4.04

50

fixed

3.49

1.90 - 6.42

0.16