Table 3 Association between severity of periodontitis and stroke (Model 3: further adjusted for age)

No periodontitis

OR (95%CI)

Ref.

Ref.

Ref.

Ref.

Mild periodontitis

OR (95%CI)

0.23(0.03–1.61)

0.23(0.03–1.59)

0.20(0.03–1.50)

0.24(0.02–1.93)

Moderate periodontitis

OR (95%CI)

1.71(1.17–2.50)

1.71(1.20–2.44)

1.41(0.98–2.05)

0.93(0.64–1.35)

Severe periodontitis

OR (95%CI)

2.55(1.25–5.21)

2.54(1.35–4.78)

2.39(1.23–4.62)

1.83(0.94–3.59)

P value for trend

0.018

0.009

0.027

0.033