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Nomogram of Walz et al for Comparing 10 Year Survival Following Radical Prostatectomy vs Radiotherapy in a Man with Prostate Cancer

Description

Walz et al developed a nomogram for determining the probability of 10 year survival in a man with localized prostate cancer following either radical prostatectomy or radiotherapy. This can help the patient decide which option may be preferable. The authors are from the University of Montreal, University of Eppendorf, Vita-Salute University and the University of Texas Southwestern.


 

Patient selection: localized prostate cancer

 

Parameters:

(1) age in years

(2) Charlson comorbid index

 

points for age (from 55 to 95 years) =

= (2.5 * (age in years)) - 137.5

 

points for comorbidity index =

= 5.81 * (comorbidity index)

 

total score =

= SUM(points for the 2 parameters)

 

Interpretation:

• minimum score: 0

• maximum score: 170

 

Score

Probability of 10 Year Survival After Prostatectomy

< 5.2

> 90%

5.2 to 77.5

(-0.000048 * ((points)^2)) - (0.001532 * (points)) + 0.9080

77.5 to 124

(0.000034 * ((points)^2)) - (0.01548 * (points)) + 1.5

> 124

< 10%

 

 

Score

Probability of 10 Year Survival After Radiotherapy

< 5.35

> 70%

5.35 to 52.4

(-0.000034 * ((points)^2)) - (0.006614 * (points)) + 0.7375

52.4 to 104

(0.000090 * ((points)^2)) - (0.01966 * (points)) + 1.086

> 104

< 1%

 


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