Prognostic Index of Day et al for Cutaneous Melanoma and the Modified Prognostic Index of Schmid-Wendtner et al

Day et al developed a prognostic index for patients with cutaneous melanoma. This was modified by Schmid-Wendtner et al.

Parameters:

(1) thickness of the tumor in mm

(2) number of mitoses per square mm (mitotic index)

prognostic index of Day et al =

= (thickness of tumor in mm) * (mitotic index)

modified prognostic index of Schmid-Wendtner et al =

= ((thickness of tumor in mm)^2) * (mitotic index)

Prognostic Index	Relative Risk for First Progression
0 to 3.6	1
3.7 to 12.4	3
12.5 to 41	6
> 41	10

Modified Prognostic Index	Relative Risk for First Progression	Percent with First Progression at 10 Years
0 to 2.9	1	10%
3.0 to 17.3	3	33%
17.4 to 91.8	6	55%
> 91.8	11	73%

after Table 4 and Figure 3, page 624, Schmid-Wendtner et al

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