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Table 6 Ethnicity-stratified Odds ratio for Periodontitis stage II and stage III/IV by demographic, socioeconomic and behavioral factors

From: Periodontal health in an indigenous Sámi population in Northern Norway: a cross-sectional study

Background characteristics NSP vs. Stage II
(total n = 1661)
NSP vs. Stage III/IV
(total n = 1463)
Adjusted OR (95% CI) Adjusted OR (95% CI)
  Sámi Non-Sámi Sámi Non-Sámi
  n = 1078 n = 555 n = 956 n = 478
Sex
 Men 1.4 (1.1–2.0) 1.2 (0.8–1.9) 2.1 (1.4–3.0) 1.2 (0.7–2.1)
 Women Ref. Ref. Ref. Ref.
Age (years)
 65–75 8.5 (5.0–14.4) 11.9 (6.0–23.7) 10.9 (6.0–20.0) 15.7 (7.3–34.8)
 50–64 8.8 (6.1–12.9) 7.5 (4.5–12.2) 11.6 (7.3–18.3) 9.1 (4.9–17.0)
 35–49 Ref. Ref. Ref. Ref.
 18–34 0.08 (0.4–0.2) 0.1 (0.06–0.4) 0.1 (0.04–0.3) 0.07 (0.01–0.5)
Education (years)
 1–9 years 0.8 (0.5–1.4) 1.1 (0.5–2.6) 2.0 (1.2–3.5) 2.5 (1.1–5.7)
 10–13 years 1.3 (0.9–1.8) 1.2 (0.8–1.9) 1.8 (1.2–2.9) 1.1 (0.6–1.9)
  > 14 years Ref. Ref. Ref. Ref.
Smoking
 Yes 2.3 (1.5–3.6) 4.0 (2.3–7.0) 4.7 (2.9–7.6) 4.5 (2.3–8.6)
 No Ref. Ref. Ref. Ref.
Dental attendance
 Seldom 1.9 (1.1–1.9) 0.9 (0.3–2.5) 1.4 (0.6–2.8) 2.9 (0.9–9.5)
 Every other year Ref. Ref. Ref. Ref.
 Yearly 1.4 (0.9–3.0) 0.8 (0.5–1.3) 2.1 (1.4–3.2) 1.9 (1.1–3.6)
  1. NSP = non-severe periodontitis. Ref. = Reference group. Adjusted for all variables in the model. In the adjusted model participants with missing values are excluded. Bold = significant differences compared to reference group