Table 2 Association of covariates and stroke risk.

From: Dietary zinc intake associated with stroke in American adults

Variables

OR (95% CI)

P value

Age (year)

1.04 (1.03–1.06)

< 0.001

Sex, n (%)

  

Male

1 (reference)

 

Female

1.1 (0.83–1.47)

0.501

Race/ethnicity, n (%)

  

Non-Hispanic White

1 (reference)

 

Non-Hispanic Black

0.89 (0.63–1.26)

0.498

Mexican American

0.52 (0.3–0.92)

0.023

Others

0.71 (0.48–1.07)

0.103

Marital status, n (%)

  

Married or living with partner

1 (reference)

 

Living alone

1.65 (1.24–2.2)

0.001

Education level (years), n (%)

  

< High school

1 (reference)

 

High school

1.26 (0.76–2.09)

0.372

> High school

0.91 (0.55–1.5)

0.7

Family income, n (%)

  

Low

1 (reference)

 

Medium

0.92 (0.67–1.27)

0.608

High

0.52 (0.35–0.78)

0.001

Smoking, n (%)

  

Never

1 (reference)

 

Current

1.53 (1.11–2.12)

0.01

Former

1.65 (1.12–2.42)

0.011

Calorie consumption (kcal/d), Mean ± SD

1 (1–1)

0.157

Body mass index (kg/m2), Mean ± SD

0.98 (0.96–1)

0.044

Hypertension, n (%)

  

No

  

Yes

1.49 (0.97–2.29)

0.071

Hypercholesteremia, n (%)

  

No

  

Yes

1.7 (1.22–2.36)

0.002

Coronary heart disease, n (%)

  

No

  

Yes

3.46 (2.45–4.89)

< 0.001

Diabetes, n (%)

  

No

  

Yes

1.58 (1.17–2.12)

0.003

Antihypertensive drugs, n (%)

  

No

  

Yes

2.42 (1.12–5.21)

0.024

Preventive aspirin use, n (%)

  

No

  

Yes

3.16 (2.26–4.42)

< 0.001

Lipid-lowing drugs, n (%)

  

No

1 (reference)

 

Yes

2.05 (1.49–2.82)

< 0.001

Zinc intake (mg/d)

  

No

1 (reference)

 

Yes

0.98 (0.95–1.01)

0.117

  1. OR, odds ratio; CI, confidence interval; SD, standard deviation.