Prevalence of stroke (%)

Odds ratio (95% CI)

p-value

Age ≥ 40 years

3.2

1.03 (1.02 - 1.05)

<0.001

≥50 years

3.8

8.98 (3.14 - 25.7)

<0.001

≥60 years

4.7

6.82 (2.6 - 17.93)

<0.001

≥70 years

10

13.83 (4.93 - 38.7)

<0.001

Snuff

3.3

2.98 (0.35 - 25.17)

0.005

Hypertension

3.8

4.6 (1.68 - 12.6)

0.001