Is Lifelong Knee Joint Force from Work, Home, and Sport Related to Knee Osteoarthritis?
Table 3
Crude and adjusted† odds ratios for knee OA* by activity domain and dose.
Males ()
Females ()
Prevalence (%)
Unadjusted OR (95% CI)
Adjusted OR† (95% CI)
Prevalence (%)
Unadjusted OR (95% CI)
Adjusted OR† (95% CI)
Knee OA*
17.8
25.1
Sport Knee (TF) force
CPFI.1
12.3
1.00
1.00
25.1
1.00
1.00
CPFI.2
14.7
0.84 (0.49, 1.43)
0.76 (0.40, 1.43)
23.5
0.86 (0.65, 1.13)
0.83 (0.61, 1.14)
CPFI.3
16.3
0.74 (0.43, 1.27)
0.74 (0.39, 1.39)
22.5
0.80 (0.60, 1.06)
0.72 (0.52, 0.99)
CPFI.4
23.0
1.13 (0.71, 1.82)
1.06 (0.61, 1.86)
18.0
0.81 (0.60, 1.09)
0.77 (0.55, 1.08)
CPFI.5
33.6
1.24 (0.79, 1.93)
1.13 (0.66, 1.93)
11.0
0.78 (0.55, 1.11)
0.70 (0.46, 1.05)
Occ knee (TF) force
CPFI.1
7.5
1.00
1.00
27.6
1.00
1.00
CPFI.2
18.4
1.30 (0.68, 2.49)
1.34 (0.57, 2.61)∧
21.0
1.17 (0.89, 1.53)
1.03 (0.73, 1.43)
CPFI.3
17.3
1.60 (0.84, 3.05)
1.41 (0.56, 2.60)∧
21.7
1.25 (0.96, 1.63)
1.16 (0.84, 1.60)
CPFI.4
24.2
1.81 (0.97, 3.35)
1.62 (0.79, 3.33)∧
17.5
1.26 (0.95, 1.66)
1.05 (0.74, 1.49)
CPFI.5
32.7
2.10 (1.15, 3.82)
1.93 (0.95, 3.90)∧
12.4
1.81 (1.34, 2.44)
1.37 (0.95, 1.98)
House knee (TF) force
CPFI.1
36.3
1.00
1.00
11.1
1.00
1.00
CPFI.2
29.9
1.01 (0.72, 1.41)
1.00 (0.68, 1.48)
14.6
0.94 (0.64, 1.38)
1.07 (0.66, 1.75)∧
CPFI.3
17.8
1.06 (0.71, 1.56)
0.94 (0.60, 1.47)
21.2
1.07 (0.75, 1.52)
1.56 (0.98, 2.43)∧
CPFI.4
9.8
0.84 (0.50, 1.40)
0.70 (0.39, 1.25)
25.6
1.24 (0.88, 1.75)
1.49 (0.97, 2.30)∧
CPFI.5
6.2
1.61 (0.94, 2.76)
1.17 (0.61, 2.24)
27.5
1.67 (1.20, 2.33)
2.02 (1.32, 3.01)∧
*Self-reported medical diagnosis plus pain, aching, or stiffness most days.
†ORs adjusted for age, knee injury, BMI, and other activity domains. ∧Test for trend: .
