Table 3.

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

	Unadjusted model	model 1	model 2	model 3
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

Model 1: adjusted for race/ethnicity and sex

Model 2: further adjusted for BMI, hypercholesterolemia, diabetes, alcohol consumption and physical activity

Model 3: further adjusted for age