|
Patient characteristics
|
|
Sex
|
Male
|
14,869 (42.4%)
|
0.0
|
|
Female
|
20,187 (57.6%)
| |
|
Age, mean (SD)
| |
69.5 (10.5)
|
0.0
|
|
Age group
|
< 55
|
3228 (9.2%)
|
0.0
|
|
55–69
|
12,303 (35.1%)
| |
|
70–84
|
17,786 (50.7%)
| |
|
85+
|
1739 (5.0%)
| |
|
ASA classification
|
ASA I
|
6087 (17.4%)
|
0.2
|
|
ASA II
|
21,147 (60.4%)
| |
|
ASA III and IV
|
7769 (22.2%)
| |
|
BMI, mean (SD)
| |
27.5 (4.5)
|
1.1
|
|
BMI class
|
|
Normal weight and underweight
|
< 18.5–24.9
|
10,555 (30.5%)
| |
|
Overweight
|
25–29.9
|
14,570 (42.0%)
| |
|
Obesity class 1
|
30–34.9
|
7303 (21.1%)
| |
|
Obesity class 2/3
|
> 35
|
2225 (6.4%)
| |
|
Smoking status
|
Non-smoker
|
28,797 (95.1%)
|
13.6
|
|
Smoker
|
1484 (4.9%)
| |
|
Diagnosis
|
Primary osteoarthritis
|
32,097 (91.6%)
|
0.0
|
|
Other
|
2977 (8.4%)
| |
|
Reoperation due to PJI within 1 year
| |
460 (1.3%)
| |
|
Intraoperative characteristics
|
|
Level of hospital
|
University hospital
|
2466 (7.0%)
|
0.0
|
|
County hospital
|
28,553 (81.4%)
| |
|
Private hospital
|
4037 (11.4%)
| |
|
Anesthesia
|
Spinal
|
28,361 (86.7%)
|
6.7
|
|
General
|
4346 (13.3%)
| |
|
Incision
|
Lateral
|
15,905 (45.4%)
|
0.0
|
|
Posterior
|
18,755 (53.5%)
| |
|
Other
|
394 (1.1%)
| |
|
Fixation
|
Cemented
|
20,861 (59.6%)
|
0.2
|
|
Uncemented
|
8631 (24.7%)
| |
|
Hybrid
|
5502 (15.7%)
| |
|
Operative time, mean minutes (SD)
| | |
0.0
|
|
Overall mean (SD)
| |
85.4 (28.9)
| |
|
Operative time cemented mean (SD)
| |
90.2 (27.9)
| |
|
Operative uncemented mean (SD)
| |
76.9 (28.7)
| |
|
Operative time hybrid mean (SD)
| |
80.6 (29.1)
| |
|
Type of ventilation
|
Unidirectional airflow
|
29,762 (84.9%)
|
0.0
|
|
Mixed turbulent airflow
|
5294 (15.1%)
| |
