Table 2 Correlation of each item and total SC-NKSS scores
From: Translation and validation of the simplified Chinese new Knee Society Scoring System
Mean ± SD | Item-total correlation | Cronbach’s alpha if item deleted | |
|---|---|---|---|
Syptom modified | 6.75 ± 2.61 | 0.709 | 0.639 |
Satisfaction score | 12.10 ± 4.42 | 0.820 | 0.504 |
Expectation score | 10.85 ± 1.88 | 0.777 | 0.665 |
Functional activity score | 40.95 ± 12.74 | 0.847 | 0.788 |