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Table 4 Baseline cartilage damage (area extent score)

From: Structural tissue damage and 24-month progression of semi-quantitative MRI biomarkers of knee osteoarthritis in the IMI-APPROACH cohort

N = 286

All knees

No ROA

ROA

P-value

Frequency

Percent

Frequency

Percent

Frequency

Percent

 

Knee

Max score

0

7

2.4

7

5.4

0

0.0

0.0000

1

14

4.9

14

10.9

0

0.0

2

149

52.1

93

72.1

56

35.7

3

116

40.6

15

11.6

101

64.3

Number of subregions

0

7

2.4

7

5.4

0

0.0

0.0000

1

22

7.7

21

16.3

1

0.6

2

25

8.7

23

17.8

2

1.3

3

21

7.3

18

14.0

3

1.9

4

38

13.3

24

18.6

14

8.9

5

31

10.8

17

13.2

14

8.9

6

31

10.8

8

6.2

23

14.6

7

37

12.9

8

6.2

29

18.5

8

26

9.1

2

1.6

24

15.3

9

14

4.9

1

0.8

13

8.3

10

14

4.9

0

0.0

14

8.9

11 + 

20

7.0

0

0.0

20

12.7

MFTJ

Max score

0

67

23.4

56

43.4

11

7.0

0.0000

1

14

4.9

8

6.2

6

3.8

2

146

51.0

61

47.3

85

54.1

3

59

20.6

4

3.1

55

35.0

Number of sub regions

0

67

23.4

56

43.4

11

7.0

0.0000

1

55

19.2

34

26.4

21

13.4

2

57

19.9

29

22.5

28

17.8

3

44

15.4

8

6.2

36

22.9

4

30

10.5

0

0.0

30

19.1

5

33

11.5

2

1.6

31

19.7

LFTJ

Max score

0

128

44.8

76

58.9

52

33.1

0.0000

1

38

13.3

19

14.7

19

12.1

2

97

33.9

34

26.4

63

40.1

3

23

8.0

0

0.0

23

14.6

Number of subregions

0

128

44.8

76

58.9

52

33.1

0.0000

1

68

23.8

37

28.7

31

19.7

2

35

12.2

11

8.5

24

15.3

3

16

5.6

5

3.9

11

7.0

4

20

7.0

0

0.0

20

12.7

5

19

6.6

0

0.0

19

12.1

PFJ

Max score

0

27

9.4

19

14.7

8

5.1

0.0000

1

35

12.2

23

17.8

12

7.6

2

163

57.0

74

57.4

89

56.7

3

61

21.3

13

10.1

48

30.6

Number of subregions

0

27

9.4

19

14.7

8

5.1

0.0000

1

54

18.9

36

27.9

18

11.5

2

73

25.5

35

27.1

38

24.2

3

75

26.2

31

24.0

44

28.0

4

57

19.9

8

6.2

49

31.2