|
Age, yr
|
67.5 (9.9)
|
68.3 (9.4)
|
0.31
|
|
Female, n (%)
|
171 (61.3)
|
170 (70.2)
|
0.03
|
|
Osteoarthritis, n (%)
|
266 (95.3)
|
232 (95.9)
|
0.77
|
|
Total knee arthroplasty n (%)
|
210 (75.3)
|
171 (70.7)
|
0.24
|
|
Unilateral, n (%)
|
270 (96.8)
|
233 (96.3)
|
0.76
|
|
Time on Wait List, days
|
325.2 (97.6)
|
332.5 (87.5)
|
0.37
|
|
Body Mass Index
|
33.2 (6.8)
|
32.6 (6.7)
|
0.26
|
|
Body mass index 30+, n (%)
|
185 (66.3)
|
151 (62.4)
|
0.35
|
|
American Society of Anesthesiologists Grade 3 or 4, n (%)
|
132 (47.5)
|
114 (47.7)
|
0.96
|
|
Comorbidity, n (%)
|
265 (95.0)
|
234 (96.7)
|
0.33
|
|
Hypertension, n (%)
|
192 (68.8)
|
164 (67.8)
|
0.80
|
|
Cardiac, n (%)
|
75 (26.9)
|
53 (21.9)
|
0.19
|
|
Diabetes, n (%)
|
58 (20.8)
|
63 (26)
|
0.18
|
|
Any central nervous system condition, n (%)
|
24 (8.6)
|
24 (9.9)
|
0.61
|
|
Other lower limb or back issues, n (%)
|
147 (57.0)
|
155 (64.3)
|
0.09
|
|
Chronic respiratory disease, n (%)
|
49 (17.6)
|
53 (21.9)
|
0.21
|
|
Renal impairment, n (%)
|
17 (6.1)
|
17 (7.0)
|
0.67
|
|
History of venous thromboembolism, n (%)
|
16 (5.7)
|
5 (2.1)
|
0.03
|
|
Documented mental health condition, n (%)
|
45 (16.1)
|
44 (18.2)
|
0.54
|
|
Interpreter requireda, n (%)
|
74 (26.5)
|
81 (33.5)
|
0.08
|
|
Country of birth - English speaking, n (%)
|
120 (43.0)
|
102 (42.1)
|
0.84
|
|
Previous knee or hip arthroplasty, n (%)
|
77 (28.5)
|
69 (28.6)
|
0.98
|
|
Pre-operative haemoglobin, g/l
|
138.8 (13.9)
|
137.3 (15.0)
|
0.24
|
|
Oxford Scorec
|
18.0 (8.4)
|
18.4 (8.1)
|
0.63
|
|
EuroQol Visual analogue score, ‘today’ health,b median (IQR)
|
66.5 (30)
|
66.0 (29)
|
0.90
|
|
Timed up-and-go pre-surgery, s d
|
17.3 (8.5)
|
16.9 (9.0)
|
0.68
|
