| |
Cox regressionc
|
|---|
|
Unadjusted
|
Adjusted
|
|---|
|
Procedure duration
|
No of TKA
|
No of revisionsa
|
K-M 1y %b
|
K-M 4y %b
|
HR (95% CI)
|
p-value
|
HR (95% CI)
|
p-value
|
|---|
| | | | | | |
0.01d
| |
0.03d
|
|
<75
|
5680
|
48
|
0.60
|
0.89
|
1
| |
1
| |
|
75-89
|
6238
|
54
|
0.58
|
0.85
|
1.1 (0.7 - 1.5)
|
1.0
|
1.0 (0.7 - 1.4)
|
0.9
|
|
90-109
|
8659
|
91
|
0.63
|
1.01
|
1.2 (0.9 – 1.7)
|
0.3
|
1.1 (0.8 – 1.6)
|
0.5
|
|
≥110
|
7685
|
118
|
0.91
|
1.38
|
1.8 (1.3 – 2.5)
|
0.001
|
1.5 (1.0 – 2.1)
|
0.03
|
-
aNumber of revisions due to deep infection (n = 311)
-
bKaplan-Meier estimated proportion of revisions due to deep infection at 1 and 4 years follow-up
-
cUnadjusted and adjusted Hazard ratios (HR) estimated with the Cox proportional hazards model (adjusted for sex, age, diagnosis, ASA classification and perioperative complications
-
dOverall test for group differences
