|
Observations: n
|
126,064
|
|---|
|
Gender: n (%)
|
|
Female
|
68,114 (54%)
|
|
Male
|
49,306 (39%)
|
|
Not specified
|
106 (0%)
|
|
Missing
|
8538 (7%)
|
|
Age band: n (%)
|
|
40–49 years of age
|
258 (0%)
|
|
50–59 years of age
|
11,380 (9%)
|
|
60–69 years of age
|
43,583 (35%)
|
|
70–79 years of age
|
48,073 (38%)
|
|
80–89 years of age
|
14,226 (11%)
|
|
90+ years of age
|
6 (0%)
|
|
Missing
|
8538 (7%)
|
|
Pre-op OKS score1
|
|
Mean (SD)
|
19.0 (8)
|
|
Median (IQR)
|
19 (11)
|
|
Missing
|
1473 (1%)
|
|
Pre-op EQ-5D index2
|
|
Mean (SD)
|
0.414(0.31)
|
|
Median (IQR)
|
0.587 (0.603)
|
|
Missing
|
7077 (6%)
|
|
Pre-op EQ-5D VAS3 “Your own health state today”
|
|
Mean (SD)
|
68.2(20)
|
|
Median (IQR)
|
70 (25)
|
|
Missing
|
13,110 (10%)
|
|
“How would you describe the results of your operation?” n (%)
|
|
Excellent
|
31,827 (25%)
|
|
Very good
|
44,472 (35%)
|
|
Good
|
30,670 (24%)
|
|
Fair or Poor
|
18,355 (15%)
|
|
Missing
|
740 (1%)
|
|
“Overall, how are your problems now, compared to before your operation?” n (%)
|
|
Much better
|
92,164 (73%)
|
|
A little better
|
20,276 (16%)
|
|
About the same
|
5775 (5%)
|
|
A little or much worse
|
7388 (6%)
|
|
Missing
|
461 (0%)
|
|
Post-op OKS scorea
|
|
Mean (SD)
|
35.2 (10)
|
|
Median (IQR)
|
37 (14)
|
|
Missing
|
46 (0%)
|
|
Post-op EQ-5D indexb
|
|
Mean (SD)
|
0.734(0.25)
|
|
Median(IQR)
|
0.760 (0.344)
|
|
Missing
|
6084 (5%)
|
|
Post-op EQ-5D VASc “Your own health state today”
|
|
Mean (SD)
|
73.8 (20)
|
|
Median (IQR)
|
80 (25)
|
|
Missing
|
6746 (5%)
|
- acaptures knee pain and function, scored from 0 to 48 where 0 indicates most and 48 least pain and functional limitations
- ba health-related quality of life measure where 0 represents death and 1 refers to perfect health
- ca Visual Analogue Scale ranging from 0 to 100, where 0 represents the worst and 100 the best imaginable health state
