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Table 4 Internal consistency and test-retest reliability of the SC-FJS

From: Simplified Chinese version of the Forgotten Joint Score (FJS) for patients who underwent joint arthroplasty: cross-cultural adaptation and validation

Item Mean score ± SD Item-total correlation Alpha if item removed ICC values (CIs range)
1 3.44 ± 0.81 0.601 0.902 0.91 (0.88–0.94)
2 3.37 ± 0.91 0.656 0.899 0.88 (0.83–0.91)
3 2.71 ± 1.20 0.670 0.897 0.88 (0.84–0.92)
4 2.73 ± 1.05 0.636 0.899 0.86 (0.81–0.90)
5 3.31 ± 0.93 0.683 0.898 0.89 (0.85–0.92)
6 2.33 ± 1.22 0.654 0.898 0.90 (0.86–0.93)
7 2.30 ± 1.15 0.640 0.899 0.92 (0.88–0.94)
8 1.89 ± 1.28 0.631 0.899 0.91 (0.87–0.93)
9 1.57 ± 1.40 0.650 0.899 0.93 (0.90–0.95)
10 2.02 ± 1.43 0.762 0.893 0.95 (0.93–0.97)
11 1.70 ± 1.45 0.678 0.897 0.91 (0.88–0.94)
12 1.76 ± 1.27 0.476 0.907 0.93 (0.90–0.95)
  1. SC-FJS simplified Chinese version of Forgotten Joint Score, ICC intraclass correlation coefficient, CIs confidence intervals