Table 3

 Multivariable analysis of the features of lung cancer

VariableOdds ratio95% CIp value
*Variables with interactions.
Symptoms
    Loss of appetite*863.6 to 21000.006
    Haemoptysis3213 to 81<0.001
    Dyspnoea*4.72.7 to 8.0<0.001
    Loss of weight4.32.2 to 8.2<0.001
    Fatigue*3.21.7 to 6.0<0.001
    Chest pain2.91.8 to 4.7<0.001
    Second attendance with cough2.71.7 to 4.4<0.001
Sign
    Finger clubbing181.7 to 1900.016
Investigations
    Thrombocytosis9.33.4 to 26<0.001
    Abnormal spirometry7.52.8 to 21<0.001
Smoking<0.001
    Non-smoker (reference category)1.0
    Current smoker9.75.3 to 18
    Ex-smoker5.93.0 to 12
    Smoking status unknown5.42.8 to 10
Interaction terms
    Dyspnoea with fatigue0.280.11 to 0.730.006
    Loss of appetite in patients over 70 years0.130.024 to 0.760.02