Table 3 Association of covariates and stroke risk in two CHARLS databases

Sex

Female

1(Ref)

1(Ref)

Male

1.01 (0.88, 1.17)

0.8423

1.0 (0.8, 1.2)

0.762

Age

 < 60

1(Ref)

1(Ref)

 ≥ 60

2.17 (1.82, 2.59)

 < 0.0001

2.2 (1.7, 3.0)

 < 0.001

Ethnicity

non-Han ethnicity

1(Ref)

1(Ref)

Han ethnicity

0.83 (0.64, 1.07)

0.1484

1.2 (0.7, 2.0)

0.433

Education

Primary school or below

1(Ref)

1(Ref)

Middle school

0.85 (0.70, 1.04)

0.1168

0.8 (0.6, 1.1)

0.103

High school or above

0.97 (0.77, 1.23)

0.805

0.6 (0.4, 0.9)

0.013

Marital status

Nonmarried

1(Ref)

1(Ref)

Married

0.69 (0.58, 0.82)

 < 0.0001

0.8 (0.6, 1.0)

0.035

Poverty level

Low

1(Ref)

1(Ref)

Middle

0.81 (0.66, 0.99)

0.0432

1.0 (0.8, 1.4)

0.77

High

0.80 (0.63, 1.01)

0.0627

0.7 (0.5, 1.0)

0.075

Hypertension

No

1(Ref)

1(Ref)

Yes

3.74 (3.19, 4.38)

 < 0.0001

3.0 (2.4, 3.8)

 < 0.001

Diabetes

No

1(Ref)

1(Ref)

Yes

2.19 (1.85, 2.60)

 < 0.0001

2.1 (1.6, 2.7)

 < 0.001

Dyslipidemia

No

1(Ref)

1(Ref)

Yes

2.98 (2.57, 3.45)

 < 0.0001

2.5 (2.0, 3.1)

 < 0.001

Drinking

No

1(Ref)

1(Ref)

Yes

0.62 (0.53, 0.74)

 < 0.0001

0.6 (0.5, 0.8)

 < 0.001

Smoking

No

1(Ref)

1(Ref)

Yes

0.64 (0.53, 0.76)

 < 0.0001

0.7 (0.5, 0.9)

0.008

Sleeptime, hours

 ≤ 7

1(Ref)

1(Ref)

7–9

0.73 (0.60, 0.88)

0.001

0.8 (0.7, 0.9)

0.0491

 > 9

1.70 (1.31, 2.21)

 < 0.0001

1.8 (1.2, 2.8)

0.007