The value of a prognostic factor can be scored according to its value, or its P score.
Exclusion: A predictive factor with no prognostic value.
Parameters:
(1) prognostic value
(2) statistical independence
(3) number of studies performed to validate
(4) independent of disease extent (stage for a tumor)
Value |
Statistical Independence |
Number of Studies |
Independent of Stage |
P Score |
---|---|---|---|---|
unknown |
NA |
NA |
NA |
P1 |
positive |
not independent |
NA |
NA |
P2 |
positive |
uncertain statistical independence |
NA |
NA |
P3 |
positive |
statistically independent in multivariate analysis |
1 |
NA |
P4 |
positive |
statistically independent in multivariate analysis |
>= 2 |
no |
P5 |
positive |
statistically independent in multivariate analysis |
>= 2 |
yes |
P6 |
A P score of P5 or P6 indicates a prognostic factor that is worth reporting.
Purpose: To determine the usefulness of a prognostic factor(its P score) .
Objective: other testing
ICD-10: ,