Table 1.

Systemic autoimmune rheumatic disease (SARD) prevalence estimates (Bayesian latent class hierarchical modeling): prevalence estimates (95% credible interval) per 1000 residents by age and rural/urban status, 7 Canadian provinces, 1988 to 2007.

FemaleMale
RuralUrbanRuralUrban
A. Residents aged < 45 yrs
  Alberta1.8 (1.6–2.0)2.2 (2.0–2.4)0.2 (0.1–0.3)0.3 (0.2–0.4)
  British Columbia1.0 (0.8–1.2)4.5 (4.2–4.8)0.1 (0.1–0.2)0.6 (0.5–0.7)
  Manitoba2.1 (1.8–2.4)2.4 (2.1–2.7)0.2 (0.1–0.2)0.2 (0.1–0.3)
  Nova Scotia0.9 (0.6–1.4)1.1 (0.8–1.7)0.2 (0.1–0.3)0.2 (0.1–0.4)
  Ontario3.2 (3.0–3.4)4.3 (4.1–4.4)0.2 (0.2–0.3)0.3 (0.3–0.3)
  Quebec1.0 (0.9–1.1)2.0 (1.8–2.1)0.1 (0.1–0.2)0.2 (0.2–0.3)
  Saskatchewan2.3 (1.9–2.7)2.3 (1.9–2.8)0.2 (0.2–0.3)0.2 (0.2–0.3)
B. Residents aged ≥ 45 yrs
  Alberta8.4 (7.8–9.1)9.0 (8.5–9.6)1.9 (1.6–2.3)1.7 (1.4–1.9)
  British Columbia4.9 (4.4–5.4)10.0 (9.9–10.0)0.5 (0.4–0.6)5.6 (5.2–6.1)
  Manitoba11.8 (10.9–12.7)13.2 (12.5–14.0)1.8 (1.5–2.3)2.0 (1.6–2.4)
  Nova Scotia6.6 (5.5–10.4)11.0 (9.1–16.7)1.6 (1.1–2.6)3.1 (2.3–4.8)
  Ontario13.6 (13.1–14.2)15.4 (15–15.7)3.5 (3.2–3.9)5.1 (4.8–5.5)
  Quebec5.7 (5.4–5.9)9.4 (9.1–9.8)1.4 (1.3–1.6)2.4 (2.1–2.6)
  Saskatchewan9.5 (8.8–9.9)9.9 (9.6–10.0)1.7 (1.3–2.3)1.8 (1.4–2.6)
FemalesMalesTotal
C. Overall prevalence
  Alberta4.5 (4.3–4.8)0.8 (0.7–0.9)2.7 (2.5–2.9)
  British Columbia6.1 (5.9–6.2)2.2 (2.1–2.4)4.2 (4.0–4.3)
  Manitoba6.5 (6.2–6.8)0.8 (0.7–0.9)3.8 (3.5–4.0)
  Nova Scotia4.2 (3.6–5.7)1.0 (0.8–1.4)2.6 (2.2–3.6)
  Ontario7.8 (7.6–8.0)2.2 (2.0–2.4)5.0 (4.8–5.2)
  Quebec4.2 (4.1–4.4)0.8 (0.8–0.9)2.5 (2.5–2.7)
  Saskatchewan5.5 (5.2–5.7)0.9 (0.7–1.1)3.2 (3.0–3.4)
  • Credible intervals represent the values between which there is a 95% probability of containing the variable of interest, given the data and prior information input.