
Probability of Cancer
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 agomm = size in millimeters
e = natural log (2.718282)
BETTER
YET! have a computer program figure this all out for you!!!