Table 5

 Multivariable logistic model predicting malignancy

VariableOdds ratio95% CIp value
Age (per 10 years)1.060.77 to 1.450.7
Pack years1.211.05 to 1.380.007
Primary stage 3 or 41.570.74 to 3.330.2
Size of nodule (cm)1.071.03 to 1.120.001
Primary metastasises to lungs0.770.33 to 1.790.5
Months elapsed from diagnosis of primary1.000.99 to 1.010.8
Patient on active treatment1.520.66 to 3.510.3
Multifocal nodules0.820.36 to 1.860.6