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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 gender in the Netherlands in 2014-2019
TABLE Mean NRS (rest) scores
| NRS (rest) score | Pre-operative | 6 months postoperative | 12 months postoperative¹ | |||
| Gender | n | Mean (95% CI) | n | Mean (95% CI) | n | Mean (95% CI) |
| Men | 19,801 | 4.9 (4.8-4.9) | 13,441 | 1.8 (1.7-1.8) | 11,494 | 1.4 (1.3-1.4) |
| Women | 33,642 | 5.4 (5.4-5.4) | 21,469 | 2.0 (1.9-2.0) | 57,659 | 1.6 (1.6-1.7) |
| Total² | 53,466 | 5.2 (5.2-5.2) | 34,923 | 1.9 (1.9-2.3) | 30,013 | 1.5 (1.5-1.6) |
¹ The 12 months NRS (rest) score is not (yet) available for 2019.
² Also contains NRS (rest) scores of patients whose gender was registered as unknown.
TKA: total knee arthroplasty; CI: confidence interval.
© LROI 2020
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 gender in the Netherlands in 2014-2019
TABLE Mean NRS (activity) scores
| NRS (activity) score | Pre-operative | 6 months postoperative | 12 months postoperative¹ | |||
| Gender | n | Mean (95% CI) | n | Mean (95% CI) | n | Mean (95% CI) |
| Men | 19,793 | 7.0 (7.0-7.1) | 13,443 | 2.7 (2.6-2.7) | 11,502 | 2.1 (2.1-2.2) |
| Women | 33,623 | 7.4 (7.4-7.4) | 21,486 | 3.0 (2.9-3.0) | 18,532 | 2.5 (2.4-2.5) |
| Total² | 53,439 | 7.3 (7.3-7.3) | 34,942 | 2.9 (2.8-2.9) | 30,046 | 2.3 (2.3-2.4) |
¹ The 12 months NRS (activity) score is not (yet) available for 2019.
² Also contains NRS (activity) scores of patients whose gender was registered as unknown.
TKA: total knee arthroplasty; CI: confidence interval.
© LROI 2020
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 gender in the Netherlands in 2014-2019
TABLE Mean EQ-5D index scores
| EQ-5D Index score | Pre-operative | 6 months postoperative | 12 months postoperative¹ | |||
| Gender | n | Mean (95% CI) | n | Mean (95% CI) | n | Mean (95% CI) |
| Men | 20,711 | 0.65 (0.64-0.65) | 14,057 | 0.84 (0.84-0.85) | 12,226 | 0.87 (0.87-0.87) |
| Women | 35,100 | 0.57 (0.57-0.58) | 22,337 | 0.81 (0.81-0.82) | 76,166 | 0.83 (0.82-0.83) |
| Total² | 55,836 | 0.60 (0.60-0.60) | 36,408 | 0.83 (0.82-0.83) | 31,882 | 0.84 (0.84-0.84) |
¹ The 12 months EQ-5D index score is not (yet) available for 2019.
² Also contains EQ-5D index scores of patients whose gender was registered as unknown.
TKA: total knee arthroplasty; CI: confidence interval.
© LROI 2020
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
FIGURE Mean pre-operative, 6 months and 12 months postoperative EQ-5D thermometer scores of patients who underwent a TKA for osteoarthritis by gender in the Netherlands in 2014-2019
TABLE Mean EQ-5D thermometer scores
| EQ-5D thermometer score | Pre-operative | 6 months postoperative | 12 months postoperative¹ | |||
| Gender | n | Mean (95% CI) | n | Mean (95% CI) | n | Mean (95% CI) |
| Men | 20,790 | 70.0 (69.8-70.3) | 14,179 | 76.2 (75.9-76.5) | 12,382 | 76.8 (76.5-77.2) |
| Women | 35,191 | 65.9 (65.7-66.2) | 22,603 | 73.1 (72.8-73.4) | 19,919 | 73.6 (73.3-73.8) |
| Total² | 56,007 | 67.5 (67.3-67.6) | 36,795 | 74.3 (74.1-74.5) | 32,315 | 74.8 (74.6-75.0) |
¹ The 12 months EQ-5D thermometer score is not (yet) available for 2019.
² Also contains EQ-5D thermometer scores of patients whose gender was registered as unknown.
TKA: total knee arthroplasty; CI: confidence interval.
© LROI 2020
The EQ-5D thermometer score measures the health situation. The score has a range of 0.0 to 100.0, with 0.0 representing the worst possible health situation and 100.0 the best possible health situation.
Knee » PROMs » Mean scores » KOOS-PS score
FIGURE Mean pre-operative, 6 months and 12 months postoperative KOOS-PS scores of patients who underwent a TKA for osteoarthritis by gender in the Netherlands in 2014-2019
TABLE Mean KOOS-PS scores
| KOOS-PS score | Pre-operative | 6 months postoperative | 12 months postoperative¹ | |||
| Gender | n | Mean (95% CI) | n | Mean (95% CI) | n | Mean (95% CI) |
| Men | 20,658 | 48.7 (48.5-48.9) | 13,909 | 29.3 (29.0-29.5) | 12,094 | 26.1 (25.8-26.3) |
| Women | 34,653 | 53.4 (53.4-53.6) | 21,624 | 31.8 ( 31.6-32.0) | 18,892 | 29.7 (29.5-29.9) |
| Total² | 55,334 | 51.6 (51.5-51.8) | 35,547 | 30.8 (30.6-30.9) | 31,000 | 28.3 (28.1-28.5) |
¹ The 12 months KOOS-PS score is not (yet) available for 2019.
² Also contains KOOS-PS scores of patients whose gender was registered as unknown.
TKA: total knee arthroplasty; CI: confidence interval.
© LROI 2020
The KOOS-PS score measures the physical functioning of patients with osteoarthritis to the knee. The score has a range of 0.0 to 100.0, with 0.0 representing no effort and 100.0 the most possible effort.
Knee » PROMs » Mean scores » Oxford Knee score
FIGURE Mean pre-operative, 6 months and 12 months postoperative Oxford Knee scores of patients who underwent a TKA for osteoarthritis by gender in the Netherlands in 2014-2019
TABLE Mean Oxford Knee scores
| Oxford Knee score | Pre-operative | 6 months postoperative | 12 months postoperative¹ | |||
| Gender | n | Mean (95% CI) | n | Mean (95% CI) | n | Mean (95% CI) |
| Men | 18,187 | 25.0 (24.9-25.1) | 12,797 | 37.8 (37.6-38.0) | 10,840 | 40.0 (39.8-40.1) |
| Women | 30,662 | 21.6 (21.6-21.7) | 20,195 | 35.8 (35.7-36.0) | 17,273 | 37.7 (37.6-37.8) |
| Total² | 48,866 | 22.9 (22.8-23.0) | 33,002 | 36.6 (36.5-36.7) | 28,123 | 38.6 (38.5-38.7) |
¹ The 12 months Oxford Knee score is not (yet) available for 2019.
² Also contains Oxford Knee scores of patients whose gender was registered as unknown.
TKA: total knee arthroplasty; CI: confidence interval.
© LROI 2020
The Oxford Knee score measures the physical functioning and pain of patients with osteoarthritis to the knee. The score has a range of 0.0 to 48.0, with 0.0 representing no functional ability and 48.0 the most functional ability.
Knee » PROMs » Mean scores » NRS (satisfaction)
FIGURE Mean pre-operative, 6 months and 12 months postoperative NRS (satisfaction) scores of patients who underwent a TKA for osteoarthritis by gender in the Netherlands in 2014-2019
TABLE Mean NRS (statisfaction) scores
| NRS (satisfaction) | 6 months postoperative | 12 months postoperative¹ | ||
| Gender | n | Mean (95% CI) | n | Mean (95% CI) |
| Men | 12,087 | 7.8 (7.7-7.8) | 10,380 | 8.1 (8.0-8.1) |
| Women | 19,086 | 7.6 (7.6-7.7) | 16,623 | 7.9 (7.8-7.9) |
| Total² | 31,186 | 7.7 (7.7-7.7) | 27,013 | 7.9 (7.9-8.0) |
¹ The 12 months NRS (satisfaction) score is not (yet) available for 2019.
² Also contains NRS (satisfaction) scores of patients whose gender was registered as unknown.
TKA: total knee arthroplasty; CI: confidence interval.
© LROI 2020
The NRS (satisfaction) score measures patients’ satisfaction with the outcome of after joint replacement.
The score has a range of 1.0 to 10.0, with 1.0 representing very unsatisfied and 10.0 representing very satisfied.
Knee » PROMs » Mean scores » Anchor question: Daily functioning
FIGURE Mean pre-operative, 6 months and 12 months postoperative change in daily functioning of patients who underwent a TKA for osteoarthritis by gender in the Netherlands in 2014-2019
TABLE Mean anchor question: Daily functioning
| Anchor question score | 6 months postoperative | 12 months postoperative¹ | ||
| Gender | n | Mean (95% CI) | n | Mean (95% CI) |
| Men | 12,853 | 5.5 (5.5-5.5) | 11,356 | 5.7 (5.7-5.7) |
| Women | 20,611 | 5.5 (5.4-5.5) | 18,370 | 5.6 (5.6-5.6) |
| Total² | 33,478 | 5.5 (5.5-5.5) | 29,739 | 5.7 (5.6-5.7) |
¹ The 12 months anchor question score is not (yet) available for 2019.
² Also contains anchor question scores of patients whose gender was registered as unknown.
TKA: total knee arthroplasty; CI: confidence interval.
© LROI 2020
The anchor question measures change in daily functioning after joint replacement.
The score has a range of 1.0 to 7.0, with 1.0 representing very deteriorated and 7.0 representing very improved.
Knee » PROMs » Mean scores » Anchor question: Pain
FIGURE Mean pre-operative, 6 months and 12 months postoperative change in pain of patients who underwent a TKA for osteoarthritis by gender in the Netherlands in 2014-2019
TABLE Mean anchor question: Pain
| Anchor question score | 6 months postoperative | 12 months postoperative¹ | ||
| Gender | n | Mean (95% CI) | n | Mean (95% CI) |
| Men | 11,663 | 5.9 (5.9-5.9) | 10,056 | 6.0 (6.0-6.1) |
| Women | 18,698 | 5.8 (5.8-5.8) | 16,266 | 5.9 (5.9-6.0) |
| Total² | 30,374 | 5.8 (5.8-5.9) | 26,334 | 6.0 (6.0-6.0) |
¹ The 12 months anchor question score is not (yet) available for 2019.
² Also contains anchor question scores of patients whose gender was registered as unknown.
TKA: total knee arthroplasty; CI: confidence interval.
© LROI 2020