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Table 1 Prevalence and five-year incidence of total joint replacements due to osteoarthritis

From: Incidence and prevalence of total joint replacements due to osteoarthritis in the elderly: risk factors and factors associated with late life prevalence in the AGES-Reykjavik Study

Prevalence at the end of AGES II (n = 5170)
  Males Females
Age groups n TKR (%) THR (%) TJR (%) n TKR (%) THR (%) TJR (%)
−69 188 6.9 4.3 10.6 339 5.6 8.8 13
70–74 677 5.6 6.9 11.2 878 7.5 8.9 15.3
75–79 673 4.5 6.7 10.5 832 7.6 8.1 14.3
80–84 482 6.0 7.3 13.1 685 6.0 11.5 16.6
85+ 175 4.3 8.6 11.4 241 4.6 12.9 17.0
Total (95%CI) 2195 5.2 (4.3–6.2) 6.8 (5.8–7.9) 11.4 (10.1–12.7) 2975 6.7 (5.8–7.6) 9.6 (8.5–10.6) 15.2 (13.9–16.5)
Incidence during five-year follow-up (n = 3133)a
  Males Females
Age groups n TKR (%) THR (%) TJR (%) n TKR (%) THR (%) TJR (%)
−69 154 3.9 1.9 5.8 266 3.4 5.6 8.6
70–74 500 2.8 3.6 6.2 679 5.9 4.3 9.9
75–79 423 2.8 3.1 5.9 507 3.2 4.1 7.1
80–84 200 3.0 2.5 5.5 310 1.0 4.5 5.2
85+ 35 0 2.9 2.9 59 1.7 1.7 3.4
Total (95%CI) 1312 2.9 (2.0–3.8) 3.0 (2.1–4.0) 5.9 (4.6–7.1) 1821 3.8 (2.9–4.7) 4.4 (3.5–5.3) 7.9 (6.7–9.1)
  1. aThe incidence calculations are limited to those completing the five-year follow-up