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. 2017 May 8;25(4):660–665. doi: 10.1016/j.jsps.2017.04.042

Table 7.

Index improvement rate at each classified level.

Improvement rate >50% 50–30% 30–10% <10%
Grade Significant improvement Improvement More improvement No improvement
Weighting factor 0.4 0.3 0.2 0.1