Probability of Cancer


Have 
probability = (e^x) / (1 + e^x)

where:

x = -6.8272 + (0.0391* age) + (0.7917*any tobacco) + (1.3388*CA) + (0.1274*mm) + (1.0407*spiculation) + (0.7838*upper lobe)

no = 0

yes = 1

age in years

CA = any extra-thoracic CA more than 5 yrs ago

mm = size in millimeters

e = natural log (2.718282)

BETTER YET! have a computer program figure this all out for you!!!

 

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