Table 1: Prevalence of MRI-detected cartilage lesions in the medial tibiofemoral posterior area of the knee among 92 male danish floor layers and 49 male danish graphic designers.
Lesions of the medial posterior area |
Either
knee |
Left
knee |
Right
knee |
||||||||||||||||||
Occupation |
Total |
Occupation |
Total |
Occupation |
Total |
||||||||||||||||
Floor layers |
Graphic designers |
Fisher’s exact |
Floor layers |
Graphic designers |
Fisher’s exact1 |
|
Floor layers |
Graphic designers |
Fisher’s exact1 |
||||||||||||
N |
% |
N |
% |
P |
N |
% |
N |
% |
N |
% |
P |
|
|
N |
% |
N |
% |
P |
N |
% |
|
Max lesion score in the
area |
|
|
|
|
0.98 |
|
|
|
|
|
|
0.50 |
|
|
|
|
|
|
0.94 |
|
|
0 |
81 |
88.0 |
43 |
87.8 |
|
124 |
87.9 |
82 |
89.1 |
45 |
91.8 |
|
127 |
90.1 |
84 |
91.3 |
43 |
87.8 |
|
127 |
90.1 |
4 |
3 |
3.3 |
2 |
4.1 |
|
5 |
3.5 |
4 |
4.3 |
1 |
2.0 |
|
5 |
3.5 |
2 |
2.2 |
2 |
4.1 |
|
4 |
2.8 |
5 |
3 |
3.3 |
2 |
4.1 |
|
5 |
3.5 |
1 |
1.1 |
2 |
4.1 |
|
3 |
2.1 |
2 |
2.2 |
1 |
2.0 |
|
3 |
2.1 |
6 |
1 |
1.1 |
1 |
2.0 |
|
2 |
1.4 |
1 |
1.1 |
1 |
2.0 |
|
2 |
1.4 |
1 |
1.1 |
1 |
2.0 |
|
2 |
1.4 |
7 |
4 |
4.3 |
1 |
2.0 |
|
5 |
3.5 |
3 |
3.3 |
|
|
|
3 |
2.1 |
3 |
3.3 |
1 |
2.0 |
|
4 |
2.8 |
Missing |
|
|
|
|
|
|
|
1 |
1.1 |
|
|
|
1 |
0.7 |
|
|
1 |
2.0 |
|
1 |
0.7 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Max score ≥ 3 |
|
|
|
|
1.00 |
|
|
|
|
|
|
1.00 |
|
|
|
|
|
|
0.76 |
|
|
Yes |
11 |
12.0 |
6 |
12.2 |
|
17 |
12.1 |
9 |
9.8 |
4 |
8.2 |
|
13 |
9.2 |
8 |
8.7 |
5 |
10.2 |
|
13 |
9.2 |
No |
81 |
88.0 |
43 |
87.8 |
|
124 |
87.9 |
82 |
89.1 |
45 |
91.8 |
|
127 |
90.1 |
84 |
91.3 |
43 |
87.8 |
|
127 |
90.1 |
Missing |
|
|
|
|
|
|
|
1 |
1.1 |
|
|
|
1 |
0.7 |
|
|
1 |
2.0 |
|
1 |
0.7 |
Total |
92 |
100 |
49 |
100 |
|
141 |
100 |
92 |
100 |
49 |
100 |
|
141 |
100 |
92 |
100 |
49 |
100 |
|
141 |
100 |
1Fisher’s exact test of the association between
occupation and severe cartilage lesions among observations with non-missing
cartilage lesions.