Table 3.

Associations between stroke and different independent variables including periodontitis by Cox regression analysis

Independent variables at baseline	All individuals (n = 858) HR, CI, p value	Women (n = 459) HR, CI, p value	Men (n = 399) HR, CI, p value	YO (n = 471) HR, CI, p value	OO (n = 387) HR, CI, p value
Age cut	HR: 3.4, CI: 2.3–5.1, p = 0.000**	HR: 3.6, CI: 2.0–6.4, p = 0.000**	HR: 3.2, CI: 1.8–5.7, p = 0.000**
BMI ≥ 30	HR: 0.7, CI: 0.4–1.1, p = 0.157	HR: 0.7, CI: 0.3–1.4, p = 0.282	HR: 0.8, CI: 0.4–1.6, p = 0.479	HR: 1.0, CI: 0.5–2.0, p = 0.953	HR: 0.5, CI: 0.3–1.1, p = 0.098
Diabetes type 2	HR: 0.8, CI: 0.4–1.7, p = 0.613	HR: 0.6, CI: 0.2–2.2, p = 0.474	HR: 1.0, CI: 0.4–2.7, p = 0.924	HR: 0.4, CI: 0.1–1.8, p = 0.245	HR: 1.2, CI: 0.5–2.8, p = 0.704
Gender	HR: 1.3, CI: 0.9–1.9, p = 0.188			HR: 1.2, CI: 0.6–2.2, p = 0.587	HR: 1.3, CI: 0.8–2.2, p = 0.294
Hypertension	HR: 1.8, CI: 1.2–2.6, p = 0.006**	HR: 2.1, CI: 1.2–3.6, p = 0.013*	HR: 1.6, CI: 0.9–2.8, p = 0.118	HR: 1.7, CI: 0.9–3.1, p = 0.128	HR: 1.8, CI: 1.1–3.1, p = 0.019*
History of stroke	HR: 3.7, CI: 2.0–6.9, p = 0.000**	HR: 2.7, CI: 1.0–7.5, p = 0.052	HR: 4.6, CI: 2.1–10.2, p = 0.000**	HR: 6.2, CI: 2.7–14.4, p = 0.000**	HR: 2.3, CI: 0.9–6.1, p = 0.088
Periodontitis	HR: 1.2, CI: 0.8–1.8, p = 0.442	HR: 1.3, CI: 0.7–2.4, p = 0.485	HR: 1.2, CI: 0.6–2.1, p = 0.627	HR: 1.1, CI: 0.5–2.3, p = 0.865	HR: 1.2, CI: 0.7–2.0, p = 0.535
Smoking	HR: 1.0, CI: 0.7–1.5, p = 0.915	HR: 0.8, CI: 0.4–1.4, p = 0.381	HR: 1.2, CI: 0.7–2.1, p = 0.544	HR: 1.2, CI: 0.7–2.3, p = 0.496	HR: 0.9, CI: 0.6–1.6, p = 0.834

BMI body mass index, Periodontitis = alveolar bone loss ≥ 5-mm distance from the CEJ to marginal bone level on ≥ 30% of sites, YO young-old 60–72 years, OO old-old 78–93 years, *p < 0.05, **p < 0.01