Visual analog scale (gold standard): VAS adjusted life years (VAS-AL) | ||||||||||||||||||
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WOMAC pre-operative | N | Mean EQ-5D VAS pre-operative | SD | Mean EQ-5D VAS post-operative | SD | Mean change EQ-5D VAS | SD | Life expectancy | SD | Mean costs in € | SD | Mean costs incl. potential revision | SD | VAS-AL | SD | VAS-AL disc. 3.5% | Cost/VAS-AL in € | Cost/VAS-AL disc. 3.5% |
0-20 | 14 | 47.50 | 21.68 | 74.86 | 16.49 | 27.36 | 23.26 | 16.48 | 7.95 | 7,043 | 1,813 | 8,421 | 1,778 | 4.10 | 3.25 | 3.38 | 2,055 | 2,313 |
21-40 | 75 | 50.09 | 22.85 | 71.99 | 22.07 | 21.89 | 27.63 | 16.71 | 8.68 | 6,698 | 1,860 | 8,100 | 2,304 | 4.46 | 6.93 | 2.73 | 1,816 | 2,737 |
41-60 | 110 | 59.19 | 17.86 | 78.10 | 19.95 | 18.91 | 22.82 | 17.16 | 7.9 | 6,198 | 1,036 | 7,582 | 1,843 | 3.25 | 4.88 | 2.41 | 2,332 | 2,892 |
61-80 | 77 | 68.09 | 16.48 | 83.31 | 12.44 | 15.22 | 20.35 | 18.58 | 7.16 | 6,034 | 978 | 7,487 | 1,419 | 2.79 | 3.99 | 2.05 | 2,684 | 3,310 |
81-100 | 16 | 79.69 | 16.23 | 86.63 | 10.79 | 6.94 | 17.55 | 20.39 | 7.61 | 5,948 | 617 | 7,568 | 1,118 | 2.27 | 4.73 | 1.00 | 3,337 | 6,757 |
Sum | 292 | 59.76 | 20.72 | 78.22 | 18.78 | 18.45 | 23.55 | 17.57 | 7.92 | 6,310 | 1,341 | 7,730 | 1,854 | 3.43 | 5.23 | 2.39 | 2,256 | 2,964 |
UK preference-weighted index as underlying value set (QALY) | ||||||||||||||||||
WOMAC pre-operative | N | Mean EQ-5D utility score pre-operative | SD | Mean EQ-5D utility score post-operative | SD | Mean change EQ-5D utility score | SD | Life expectancy | SD | Mean costs in € | SD | Mean costs incl. potential revision | SD | QALY | SD | QALY disc. 3.5% | Cost/QALY in € | Cost/QALY disc. 3.5% |
0-20 | 14 | 0.04 | 0.12 | 0.81 | 0.17 | 0.77 | 0.16 | 16.48 | 7.95 | 7,043 | 1,813 | 8,421 | 1,778 | 12.40 | 6.17 | 9.50 | 679 | 823 |
21-40 | 75 | 0.30 | 0.31 | 0.76 | 0.25 | 0.46 | 0.33 | 16.71 | 8.68 | 6,698 | 1,860 | 8,100 | 2,304 | 8.20 | 8.78 | 5.76 | 987 | 1,300 |
41-60 | 110 | 0.54 | 0.25 | 0.86 | 0.15 | 0.31 | 0.28 | 17.16 | 7.90 | 6,198 | 1,036 | 7,582 | 1,843 | 5.85 | 6.77 | 3.98 | 1,295 | 1,751 |
61-80 | 77 | 0.70 | 0.17 | 0.88 | 0.16 | 0.18 | 0.24 | 18.58 | 7.16 | 6,034 | 978 | 7,487 | 1,419 | 3.28 | 4.64 | 2.40 | 2,281 | 2,829 |
81-100 | 16 | 0.80 | 0.06 | 0.94 | 0.10 | 0.14 | 0.14 | 20.39 | 7.61 | 5,948 | 617 | 7,568 | 1,118 | 3.16 | 2.81 | 2.03 | 2,393 | 3,329 |
Sum | 292 | 0.51 | 0.30 | 0.84 | 0.19 | 0.33 | 0.31 | 17.57 | 7.92 | 6,310 | 1,341 | 7,730 | 1,854 | 5.95 | 7.08 | 4.25 | 1,300 | 1,669 |
German experience-weighted index as underlying value set (EB-QALY) | ||||||||||||||||||
WOMAC pre-operative | N | Mean EQ-5D utility score pre-operative | SD | Mean EQ-5D utility score post-operative | SD | Mean change EQ-5D utility score | SD | Life expectancy | SD | Mean costs in € | SD | Mean costs incl. potential revision | SD | EB-QALY | SD | EB-QALY disc. 3.5% | Cost/EB-QALY in € | Cost/EB-QALY disc. 3.5% |
0-20 | 14 | 0.34 | 0.06 | 0.72 | 0.17 | 0.39 | 0.15 | 16.48 | 7.95 | 7,043 | 1,813 | 8,421 | 1,778 | 6.49 | 4.60 | 4.76 | 1,297 | 1,643 |
21-40 | 75 | 0.44 | 0.13 | 0.71 | 0.18 | 0.27 | 0.18 | 16.71 | 8.68 | 6,698 | 1,860 | 8,100 | 2,304 | 4.71 | 5.09 | 3.39 | 1,721 | 2,207 |
41-60 | 110 | 0.53 | 0.12 | 0.77 | 0.14 | 0.24 | 0.17 | 17.16 | 7.90 | 6,198 | 1,036 | 7,582 | 1,843 | 4.39 | 4.17 | 3.04 | 1,726 | 2,292 |
61-80 | 77 | 0.65 | 0.12 | 0.80 | 0.12 | 0.15 | 0.17 | 18.58 | 7.16 | 6,034 | 978 | 7,487 | 1,419 | 2.79 | 3.62 | 2.02 | 2,685 | 3,368 |
81-100 | 16 | 0.73 | 0.08 | 0.86 | 0.06 | 0.12 | 0.11 | 20.39 | 7.61 | 5,948 | 617 | 7,568 | 1,118 | 2.59 | 2.20 | 1.75 | 2,920 | 3,856 |
Sum | 292 | 0.54 | 0.16 | 0.76 | 0.15 | 0.22 | 0.18 | 17.57 | 7.92 | 6,310 | 1,341 | 7,730 | 1,854 | 4.05 | 4.32 | 2.90 | 1,908 | 2,439 |