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Table 2 Relation of study variables to the number of teeth with periodontal pockets

From: Waist circumference and waist-to-height ratio are associated with periodontal pocketing—results of the Health 2000 Survey

  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)