Table 3.

Intraclass correlation coefficients (ICCs) of total and individual sub-scores of the FJS

	ICC (95% CI)
FJS Total	0.91 (0.88–0.94)
FJS 1	0.84 (0.78–0.88)
FJS 2	0.80 (0.73–0.85)
FJS 3	0.82 (0.77–0.87)
FJS 4	0.87 (0.83–0.91)
FJS 5	0.79 (0.72–0.84)
FJS 6	0.85 (0.80–0.89)
FJS 7	0.81 (0.74–0.85)
FJS 8	0.82 (0.76–0.87)
FJS 9	0.80 (0.73–0.85)
FJS 10	0.86 (0.81–0.90)
FJS 11	0.85 (0.78–0.89)
FJS 12	0.89 (0.84–0.93)