Table 2

Incidence of knee replacement/high tibial osteotomy (TKR) due to osteoarthritis in relation to leisure time physical activity
Physical activity leisure, baseline Cases, n RR (95% CI)* P, trend RR (95% CI)† P, trend RR (95% CI) ‡ P, trend
TKR
All
Low (n = 6934) 104 1.0 0.398 1.0 0.898 1.0 0.087
Low-moderate (n = 6949) 122 1.15 (0.88, 1.49) 1.13 (0.87, 1.47) 1.31 (1.00, 1.70)
Moderate-high (n = 6973) 124 1.16 (0.89, 1.51) 1.13 (0.87, 1.46) 1.36 (1.04, 1.77)
High (n = 6957) 117 1.13 (0.86, 1.47) 1.03 (0.79, 1.34) 1.27 (0.97, 1.66)
Men
Low (n = 2777) 34 1.0 0.046 1.0 0.390 1.0 0.163
Low-moderate (n = 2639) 36 1.09 (0.68, 1.74) 1.03 (0.64, 1.64) 1.08 (0.68, 1.73)
Moderate-high (n = 2604) 48 1.47 (0.95, 2.29) 1.31 (0.84, 2.03) 1.44 (0.93, 2.25)
High (n = 2925) 51 1.44 (0.94, 2.22) 1.15 (0.74, 1.77) 1.28 (0.83, 1.99)
Women
Low (n = 4157) 70 1.0 0.648 1.0 0.548 1.0 0.349
Low-moderate (n = 4310) 86 1.17 (0.85, 1.60) 1.18 (0.86, 1.62) 1.42 (1.03, 1.96)
Moderate-high (n = 4369) 76 1.02 (0.73, 1.41) 1.03 (0.74, 1.43) 1.29 (0.93, 1.79)
High (n = 4032) 66 0.97 (0.69, 1.36) 0.94 (0.67, 1.32) 1.22 (0.87, 1.72)

Incidence of knee replacement, or high tibial osteotomy, 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)).

*crude, † adjusted for age, gender, ‡ adjusted for age, gender (for all subjects only), BMI, education, smoking, marital status.

Ageberg et al.

Ageberg et al. BMC Musculoskeletal Disorders 2012 13:73   doi:10.1186/1471-2474-13-73

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