Table 2.

Relation of study variables to the number of teeth with periodontal pockets

	Teeth with periodontal pockets ≥ 4 mm	Teeth with periodontal pockets ≥ 6 mm
	Unadjusted PRR (95% CI)	Unadjusted PRR (95% CI)
Waist circumference (n = 1287)
I quintile	1	1
II quintile	1.4 (1.1–1.8)	1.1 (0.4–2.9)
III quintile	1.2 (0.9–1.6)	1.3 (0.4–3.7)
IV quintile	1.5 (1.1–2.0)	2.3 (0.8–6.2)
V quintile	2.1 (1.7–2.7)	6.0 (2.6–13.9)
Waist-to-height Ratio (n = 1287)
I quintile	1	1
II quintile	1.3 (0.9–1.7)	1.1 (0.4–2.5)
III quintile	1.3 (1.0–1.7)	1.2 (0.5–3.0)
IV quintile	1.6 (1.2–2.1)	3.2 (1.3–7.5)
V quintile	2.0 (1.5–2.5)	5.9 (2.7–12.6)
Sociodemographic variables
Gender (n = 1297)
Female	1	1
Male	0.7 (0.6–0.8)	0.4 (0.2–0.7)
Age (n = 1297)
30–34	1	1
35–39	1.3 (1.0–1.7)	2.4 (0.9–6.5)
40–44	1.6 (1.2–2.1)	5.6 (2.0–16.1)
45–49	2.0 (1.5–2.7)	5.2 (1.9–13.9)
Education (n = 1297)
High	1	1
Intermediate	1.3 (1.1–1.5)	3.3 (1.7–6.3)
Low	1.9 (1.4–2.4)	7.2 (3.6–14.3)
Dental variables (n = 1297)
Number of teeth
≥ 25	1	1
21–24	1.5 (1.2–2.0)	2.4 (1.1–4.9)
1–20	1.9 (1.2–2.8)	3.6 (1.5–8.9)
Dental plaque (n = 1294)
No dental plaque	1	1
Dental plaque at the gingival margins	2.1 (1.7–2.6)	2.7 (1.2–6.3)
Dental plaque also elsewhere	4.9 (3.7–6.6)	19.4 (7.8–48.8)
Dental visits (n = 1253)
Regular check-ups	1	1
Irregular	1.5 (1.2–1.8)	3.7 (2.0–6.9)
Toothbrushing (n = 1253)
At least twice a day	1	1
Daily	1.1 (0.9–1.4)	2.0 (0.9–4.5)
Less often	2.1 (1.5–2.9)	3.8 (1.8–8.0)
Lipid-lowering medication (n = 1297)
Yes	1	1
No	0.8 (0.5–1.3)	2.9 (0.5–17.7)
Unknown	0.9 (0.5–1.5)	4.6 (0.5–43.9)