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| |
Revised PJI group (n = 422)
|
Comparator group (n = 1923)
|
|---|
|
Number (%)
|
Number (%)
|
|---|
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Date of primary—range
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16/05/03–02/12/09
|
28/04/03–01/12/09
|
|
Age—mean (range)
|
66 (21–95)
|
67 (23–92)
|
|
Female
|
191 (45)
|
891 (46)
|
|
Osteoarthritis diagnosis
|
398 (94)
|
1862 (97)
|
|
ASA grade
|
|
P1
|
69 (16)
|
302 (16)
|
|
P2
|
298 (71)
|
1399 (73)
|
|
P3
|
55 (13)
|
222 (12)
|
|
Charlson
|
|
0
|
275 (65)
|
1415 (74)
|
|
1
|
97 (23)
|
333 (17)
|
|
2
|
31 (7)
|
104 (5)
|
|
3 or above
|
19 (5)
|
71 (4)
|
|
Procedure
|
|
Cemented
|
164 (39)
|
782 (41)
|
|
Uncemented
|
158 (37)
|
668 (35)
|
|
Hybrid/reverse hybrid
|
64 (15)
|
324 (17)
|
|
Resurfacing
|
36 (9)
|
149 (8)
|
|
Bearing type
|
|
Metal-on-plastic
|
254 (60)
|
1179 (61)
|
|
Metal-on-metal
|
99 (23)
|
354 (18)
|
|
Ceramic-on-ceramic
|
41 (10)
|
199 (10)
|
|
Ceramic-on-plasticmetal-on-ceramic/ceramic-on-metal
|
28 (7)
|
191 (10)
|
|
Matches per revised PJI patient
|
|
5 matching comparator patients
|
358 (85)
| | |
|
4 matching comparator patients
|
13 (3)
| | |
|
3 matching comparator patients
|
9 (2)
| | |
|
2 matching comparator patients
|
12 (3)
| | |
|
1 matching comparator patients
|
30 (7)
| | |
