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Data Quality
Mean scores
Knee » PROMs » Mean scores » NRS (rest)
FIGURE Mean pre-operative, 6 months and 12 months postoperative NRS (rest) scores of patients who underwent a TKA for osteoarthritis by ASA score in the Netherlands in 2014-2020
TABLE Mean NRS (rest) scores
| NRS (rest) score | Pre-operative | 6 months postoperative | 12 months postoperative¹ | |||
| ASA Score | n | Mean (95% CI) | n | Mean (95% CI) | n | Mean (95% CI) |
| ASA I | 7,554 | 5.0 (4.9-5.1) | 5,529 | 1.6 (1.5-1.7) | 5,226 | 1.2 (1.1-1.2) |
| ASA II | 41,931 | 5.2 (5.1-5.2) | 28,232 | 1.9 (1.9-1.9) | 26,764 | 1.5 (1.4-1.5) |
| ASA III-IV | 13,759 | 5.4 (5.4-5.4) | 8,884 | 2.2 (2.1-2.2) | 7,813 | 1.9 (1.8-1.9) |
| Total | 63,254 | 5.2 (5.2-5.2) | 42,649 | 1.9 (1.9-1.9) | 39,806 | 1.5 (1.5-1.6) |
¹ The 12 months NRS (rest) score is not (yet) available for 2020.
TKA: total knee arthroplasty; CI: confidence interval.
© LROI 2021
The NRS (rest) score measures pain during rest. The score has a range of 0.0 to 10.0, with 0.0 representing no pain and 10.0 representing the most possible pain.
Knee » PROMs » Mean scores » NRS (activity)
FIGURE Mean pre-operative, 6 months and 12 months postoperative NRS (activity) scores of patients who underwent a TKA for osteoarthritis by ASA score in the Netherlands in 2014-2020
TABLE Mean NRS (activity) scores
| NRS (activity) score | Pre-operative | 6 months postoperative | 12 months postoperative¹ | |||
| ASA Score | n | Mean (95% CI) | n | Mean (95% CI) | n | Mean (95% CI) |
| ASA I | 7,545 | 7.1 (7.0-7.1) | 5,533 | 2.5 (2.5-2.6) | 5,234 | 2.0 (1.9-2.0) |
| ASA II | 41,922 | 7.3 (7.2-7.3) | 28,249 | 2.8 (2.8-2.9) | 26,772 | 2.3 (2.3-2.3) |
| ASA III-IV | 13,747 | 7.5 (7.5-7.6) | 8,880 | 3.1 (3.1-3.2) | 7,826 | 2.7 (2.6-2.8) |
| Total | 63,224 | 7.3 (7.3-7.3) | 42,666 | 2.9 (2.8-2.9) | 39,835 | 2.3 (2.3-2.4) |
¹ The 12 months NRS (activity) score is not (yet) available for 2020.
TKA: total knee arthroplasty; CI: confidence interval.
© LROI 2021
The NRS (activity) score measures pain during activity. The score has a range of 0.0 to 10.0, with 0.0 representing no pain and 10.0 representing the most possible pain.
Knee » PROMs » Mean scores » EQ5D index score
FIGURE Mean pre-operative, 6 months and 12 months postoperative EQ-5D index scores of patients who underwent a TKA for osteoarthritis by ASA score in the Netherlands in 2014-2020
TABLE Mean EQ-5D index scores
| EQ-5D Index score | Pre-operative | 6 months postoperative | 12 months postoperative¹ | |||
| ASA Score | n | Mean (95% CI) | n | Mean (95% CI) | n | Mean (95% CI) |
| ASA I | 7,973 | 0.61 (0.61-0.61) | 5,872 | 0.81 (0.80-0.81) | 5,589 | 0.83 (0.83-0.84) |
| ASA II | 43,635 | 0.57 (0.57-0.57) | 29,360 | 0.78 (0.77-0.78) | 28,222 | 0.80 (0.80-0.80) |
| ASA III-IV | 14,119 | 0.52 (0.51-0.52) | 8,885 | 0.73 (0.73-0.74) | 7,932 | 0.74 (0.74-0.75) |
| Total | 65,742 | 0.57 (0.56-0.57) | 44,124 | 0.77 (0.76-0.77) | 41,748 | 0.79 (0.79-0.79) |
¹ The 12 months EQ-5D index score is not (yet) available for 2020.
TKA: total knee arthroplasty; CI: confidence interval.
© LROI 2021
The EQ-5D index score measures quality of life. The score has a range of -0.329 to 1.0, with 1.0 representing the best possible quality of life.
Knee » PROMs » Mean scores » EQ5D thermometer