Skip to main content

Table 5 Relative risks* for KR due to primary OA at different levels of BMI and physical activity at work

From: Risk factors for knee replacement due to primary osteoarthritis, a population based, prospective cohort study of 315,495 individuals

Physical activity at work

Body mass index, kg/m2

Sedentary

Moderate

Intermediate

Intensive

Men

 

<23.3

1

1.2 (0.5-2.9)

1.2 (0.4-3.3)

1.9 (0.7-5.3)

23.4-25.1

2.0 (0.9-4.2)

2.6 (1.2-5.4)

3.5 (1.6-7.6)

5.1 (2.4-11.3)

25.2-27.2

1.2 (0.5-2.8)

4.1 (2.1-8.3)

3.7 (1.7-7.8)

5.6 (2.7-12.0)

> = 27.3

5.9 (3.0-11.4))

7.3 (3.7-14.2)

8.1 (4.1-16.2)

11.7 (5.9-23.1)

Women

 

<21.6

1

0.6 (0.3-1.3)

0.8 (0.3-2.3)

3.1 (0.7-13.8)

21.7-23.5

1.4 (0.7-2.8)

1.7 (0.9-3.1)

1.3 (0.5-3.0)

2,6 (0.6-11.3)

23.6-26.1

2.8 (1.5-5.2)

3.2 (1.8-5.6)

3.1 (1.6-6.0)

7.9 (3.5-17.7)

> = 26.2

7.2 (4.1-12.8)

9.0 (5.2-15.7)

10.6 (5.9-18.8)

15.8 (8.2-30.3)

  1. *Adjusted for Age at screening, height, smoking habits, and physical activity at leisure (95% CI).