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. 2014 Aug 1;12:243. doi: 10.1186/1477-7819-12-243

Table 1.

The original Nottingham Prognostic Index

NPI*
Value Prognosis
≤3.4
Good
3.41 5.4
Moderate
>5.4 Poor

*NPI = tumor size in cm x 0.2 + histological grade [1- 3] + number of positive lymph nodes [1 = 0 nodes; 2 = 1 3 nodes; 3 > 3 nodes].