Table 2

Effect of prevalent hip and hand OA on risk of knee OA

 Incident knee OA
Unadjusted IR/1000 person years (99% CI)Unadjusted HR (99% CI)Age and gender-adjusted HR (99% CI)+ BMI-adjusted HR (99% CI)
Reference6.44 (6.38 to 6.49)RefRefRef
Previous hip OA
N=1807
16.09 (15.15 to 17.10)2.49 (2.44 to 2.54]; p<0.0011.36 (1.28 to 1.45); p<0.0011.15 (1.08 to 1.23); p<0.001
Previous hand OA
N=1089
16.10 (15.39 to 16.85)2.50 (2.44 to 2.55); p<0.0011.47 (1.40 to 1.54); p<0.0011.20 (1.14 to 1.26); p<0.001
  • BMI, body mass index; IR, incidence rates; OA, osteoarthritis.