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. 2021 Feb 19;68:102789. doi: 10.1016/j.scs.2021.102789

Table 5.

Utilized 5-scale linguistic ratings and the equivalent TFN.

Linguistic ratings Equivalent TFN
Very high 7,9,9
High 5,7,9
Average 3,5,7
Low 1,3,5
Very low 1,1,3