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Table 3 Incidence of hip replacement (THR) due to osteoarthritis in relation to leisure time physical activity

From: Effect of leisure time physical activity on severe knee or hip osteoarthritis leading to total joint replacement: a population-based prospective cohort study

Physical activity leisure, baseline Cases, n RR (95% CI)* P, trend RR (95% CI)† P, trend RR (95% CI) ‡ P, trend
THR        
All        
Low (n = 6935) 150 1.0 0.159 1.0 0.045 1.0 0.192
Low-moderate (n = 6933) 144 0.94 (0.75, 1.18)   0.93 (0.74, 1.17)   0.97 (0.77, 1.23)  
Moderate-high (n = 6957) 134 0.87 (0.69, 1.10)   0.85 (0.68, 1.08)   0.91 (0.72, 1.16)  
High (n = 6935) 129 0.86 (0.68, 1.09)   0.80 (0.63, 1.01)   0.86 (0.68, 1.10)  
Men        
Low (n = 2777) 38 1.0 0.081 1.0 0.332 1.0 0.187
Low-moderate (n = 2634) 49 1.33 (0.87, 2.03)   1.28 (0.84, 1.95)   1.31 (0.86, 2.01)  
Moderate-high (n = 2598) 43 1.18 (0.76, 1.83)   1.09 (0.71, 1.69)   1.15 (0.74, 1.79)  
High (n = 2914) 60 1.51 (1.01, 2.27)   1.31 (0.87, 1.97)   1.40 (0.93, 2.12)  
Women        
Low (n = 4158) 112 1.0 0.003 1.0 0.002 1.0 0.008
Low-moderate (n = 4299) 95 0.81 (0.61, 1.06)   0.82 (0.62, 1.07)   0.85 (0.64, 1.12)  
Moderate-high (n = 4359) 91 0.76 (0.58, 1.01)   0.78 (0.59, 1.02)   0.82 (0.62, 1.09)  
High (n = 4021) 69 0.63 (0.47, 0.85)   0.62 (0.46, 0.83)   0.66 (0.48, 0.89)  
  1. Incidence of hip replacement due to osteoarthritis during a mean follow-up of 11 years, in relation to leisure time physical activity at baseline (low (Q1), low–moderate (Q2), moderate–high (Q3), and high physical activity (Q4)).
  2. *crude, † adjusted for age, gender, ‡ adjusted for age, gender (for all subjects only), BMI, education, smoking, marital status.