Risk Factor

Number of Patients with AD

Total People

ApoE

ε2, ε3

414

1648

ε4

161

1606

Educational level

Junior high school or above

367

10,522

Illiterate and junior high school or below

1204

13,415

Gender

Male

647

10,307

Female

869

10,471

History of smoking

Never smoke

446

2977

Smoking over three weeks

1240

9278

Drinking history

Never drink

438

1272

Drinking over three weeks

3680

13,346

Negative life event

No negative life events

25

115

Negative life event

53

111

Family history of dementia

No history of dementia in the family

138

1232

Dementia patients in immediate family members

81

10,020

Brain trauma

No brain trauma

13,340

1,970,599

The head has been hit hard

5909

166,054

Diabetes

No diabetes

418

3588

Have diabetes

490

3419