Table 4 Incidence of hip arthroplasty due to osteoarthritis during a mean follow-up of 11 years of follow-up, in relation to measures of overweight
Q1Q2Q3Q4
BMI
    Hip osteoarthritis, n (per 1000 person-years)70 (0.88)119 (1.5)161 (2.1)201 (2.6)
    Adjusted RR (95% CI)1.001.6 (1.2 to 2.1)2.1 (1.6 to 2.8)2.6 (2.0 to 3.4)
Weight
    Hip osteoarthritis, n (per 1000 person-years)74 (0.91)117 (1.5)149 (1.9)211 (2.7)
    Adjusted RR (95% CI)1.001.7 (1.3 to 2.3)2.1 (1.6 to 2.8)3.0 (2.3 to 4.0)
Waist
    Hip osteoarthritis, n (per 1000 person-years)73 (0.92)119 (1.5)151 (2.0)208 (2.7)
    Adjusted RR (95% CI)1.001.5 (1.1 to 2.0)1.9 (1.4 to 2.6)2.5 (1.9 to 3.3)
WHR
    Hip osteoarthritis n (per 1000 person-years)128 (1.6)127 (1.6)141 (1.8)155 (2.0)
    Adjusted RR (95% CI)1.001.1 (0.8 to 1.4)1.1 (0.9 to 1.4)1.3 (1.0 to 1.6)
Body fat %
    Hip osteoarthritis, n (per 1000 person-years)98 (1.2)104 (1.4)169 (2.0)180 (2.4)
    Adjusted RR (95% CI)1.001.0 (0.8 to 1.4)1.3 (1.0 to 1.7)1.5 (1.2 to 2.0)
Height
    Hip osteoarthritis, n (per 1000 person-years)101 (1.4)151 (1.9)153 (2.0)146 (1.7)
    Adjusted RR (95% CI)1.001.6 (1.2 to 2.0)1.8 (1.4 to 2.4)1.7 (1.3 to 2.3)
  • Each quartile consists of approximately 2756 men and 4233 women. Relative risks (RR) adjusted for age, sex, smoking and physical activity (in quartiles). BMI, body mass index; WHR, waist–hip ratio.