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Table 5 Risk factors for total joint replacements during a 5-year follow-up in the ages Reykjavik studies

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

  TKR (n = 105)a p value THR (n = 117)b p value TJR (n = 217) p value
Age (per year) 0.96 (0.91–1.00) 0.07 0.97 (0.93–1.01) 0.14 0.96 (0,93–0,99) 0.01
Female sex 1.08 (0.68–1.74) 0.74 1.12 (0.73–1.72) 0.61 1.07 (0.78–1.48) 0.67
BMI (per unit) 1.13 (1.08–1.19) <0.0001 1.01 (0.96–1.05) 0.81 1.07 (1.03–1.10) 0.0002
Finger length ratio (1–3) 1.47 (1.07–2,03) 0.02 1.04 (0.79–1.36) 0.78 1.22 (0.99–1.51) 0.06
Hand OA severity (0–4) 1.04 (0.89–1.22) 0.61 1.17 (1.02–1.34) 0.03 1.11 (1.00–1.24)) 0.04
BMD (per 10 % of predicted) 1,03 (0,96–1,10) 0,4 0,99 (0,92–1,05) 0,67 1.00 (0,96–1,05) 0,94
Previous TKR 4.94 (2.42–7.71) <0.0001 0.80 (0.37–1.72)) 0.56 1.91 (1.16–3.14) 0.01
Previous THR 1.28 (0.68–2.40) 0.45 3.56 (2.04–6.22) <0.0001 2.10 (1.30–3.39) 0.003
Knee symptomsc 6.77 (3.87–11.85) <0.0001 0.97 (0.65–1.46) 0.90 2.11 (1.56–2.87) <0.0001
Hip symptomsc 0.77 (0.47–1.27) 0.30 2.92 (1.93–4.41) <0.0001 1.61 (1.17–2.22) 0.004
AUC (95 % CI): 0.84 (0.81–0.88) 0.69 (0.64–0.75) 0.71 (0.68–0.75)
R 2 : Cragg-Uhler (Nagelkerke): 0.22   0.08   0.10  
  1. aParticipants with bilateral TKRs (n = 37) at initial visit were excluded from analysis
  2. bParticipants with bilateral THRs (n = 39) at initial visit were excluded from analysis
  3. cAt initial visit