Importance and threshold scores identified for PROs
| PRO | N1 | Important | Not important | Unfamiliar | N2 | Operative | Non-operative |
|---|---|---|---|---|---|---|---|
| Operative Non-operative | Operative Non-operative | Median (1Q, 3Q) | Median (1Q, 3Q) | ||||
| GRS | 1374 1261 | 45% | 32% | 17% | 123 107 | 90 (90, 90) | 90 (85, 90) |
| KOS-SAS | 1386 1267 | 42% | 35% | 18% | 87 75 | 90 (80, 90) | 90 (80, 90) |
| KOS-ADLS | 1382 1266 | 41% | 36% | 17% | 95 84 | 90 (80, 90) | 90 (80, 90) |
| IKDC2000 | 1377 1262 | 38% | 33% | 24% | 87 70 | 90 (85, 90) | 90 (85, 90) |
| KOOS | 1379 1263 | 37% | 38% | 18% | 56 48 | 85 (80, 90) | 85 (80, 90) |
| Lysholm | 1382 1269 | 36% | 36% | 22% | 94 76 | 90 (85, 90) | 85 (82.5, 90) |
| Cincinnati | 1363 1253 | 29% | 42% | 22% | 33 25 | 90 (80, 90) | 90 (80, 90) |
| Tegner | 1379 1268 | 29% | 38% | 28% | 38 32 | 7 (6, 8) | 7 (5,8) |
| Marx | 1354 1247 | 13% | 42% | 40% | 10 7 | 12 (8.5, 12) | 12 (10, 12) |
1Q, the first quartile representing the 25th centile; 3Q, the third quartile representing the 25th centile; Cincinnati, Cincinnati Knee Score; GRS, global rating scale; IKDC2000, International Knee Documentation Committee 2000 Subjective Knee Form; KOS-ADLS, Knee Outcome Score—Activities of Daily Living Scale; KOS-SAS, Knee Outcome Score—Sports Activities Scale; Lysholm, Lysholm Knee Score; Marx, Marx Activity Rating Scale; N1, the number of respondents concerning the importance of each PRO (maximum 1490 operative, 1326 non-operative); N2, the number of respondents who provided a valid threshold score for defining success on each measure; PRO, patient reported outcome; Tegner, Tegner Activity Scale.