|
Hip radiographic feature at baseline
|
All participants
|
Caucasian
|
AA
|
P
a
|
|---|
|
n = 1422
|
n = 1054
|
n = 368
| |
|---|
|
KL grade
| | | | |
|
0: No hip OA %
|
15.3
|
17.3
|
9.5
|
<0.0001b
|
|
1: Questionable hip OA %
|
61.6
|
59.3
|
68.5
| |
|
2: Mild hip OA %
|
21.6
|
22.2
|
19.7
| |
|
3: Moderate hip OA %
|
1.3
|
1.1
|
1.9
| |
|
4: Severe hip OA %
|
0.2
|
0.1
|
0.4
| |
|
JSN
| | | | |
|
Axial
| | | | |
|
None %
|
77.7
|
75.9
|
82.9
|
<0.0001
|
|
Mild %
|
21.6
|
23.7
|
15.7
| |
|
Moderate/severe %
|
0.7
|
0.4
|
1.4
| |
|
Superior
| | | | |
|
None %
|
91.6
|
92.7
|
88.5
|
0.0011
|
|
Mild %
|
7.8
|
6.9
|
10.4
| |
|
Moderate/severe %
|
0.6
|
0.4
|
1.1
| |
|
Medial
| | | | |
|
None %
|
98.2
|
98.2
|
98.1
|
0.8599b
|
|
Mild %
|
1.8
|
1.7
|
1.9
| |
|
Moderate/severe %
|
0.1
|
0.1
|
0
| |
|
Subchondral
| | | | |
|
Cysts %
|
4.1
|
3.9
|
4.5
|
0.5193
|
|
Sclerosis %
|
14.1
|
14.5
|
13.1
|
0.3337
|
|
Medial osteophytes
| | | | |
|
Severity
| | | | |
|
None %
|
92.1
|
92.6
|
90.8
|
0.2221
|
|
Mild %
|
6.8
|
6.3
|
8.2
| |
|
Moderate/severe %
|
1.1
|
1.1
|
1.0
| |
|
Location
| | | | |
|
None %
|
92.2
|
92.6
|
91.0
|
0.0353
|
|
Acetabular only %
|
2.9
|
2.4
|
4.4
| |
|
Femoral only %
|
3.5
|
3.7
|
3.0
| |
|
Both %
|
1.4
|
1.3
|
1.6
| |
|
Lateral osteophytes
| | | | |
|
Severity
| | | | |
|
None %
|
42.8
|
46.0
|
33.9
|
<0.0001
|
|
Mild %
|
48.6
|
46.5
|
54.6
| |
|
Moderate/severe %
|
8.5
|
7.5
|
11.4
| |
|
Location
| | | | |
|
None %
|
42.8
|
46.0
|
33.7
|
<0.0001
|
|
Acetabular only %
|
40.8
|
38.2
|
48.1
| |
|
Femoral only %
|
4.7
|
5.1
|
3.6
| |
|
Both %
|
11.7
|
10.7
|
14.7
| |
-
aChi-square or Fisher’s Exact p-value comparing Caucasians to African Americans (AAs). bFisher’s exact test p value. KL Kellgren–Lawrence, OA osteoarthritis, JSN joint space narrowing
