Table 10 The range of CCF parameters in the CCF grading scale.

From: A new Chinese crow’s feet grading scale based on the DermaTOP system

Level

Range of CCF parameters

0

 < 0.5767

1

0.5767–1.9562

2

1.9562–3.6065

3

3.6065–4.6173

4

4.6173–6.6570

5

6.6570–6.9143

6

6.9143–8.6717