Figure 2

Lung Cancer Histology by Smoking Status. Lung Cancer histology differs by smoking status (p = 0.007). The percent of lung cancer patients with adenocarcinoma was lower in current and former smokers than in never-smokers (64.3% versus 79.9%, p = 0.0004), while the percent with squamous cell carcinoma was higher in smokers than in never-smokers (15.5% versus 8.3%, p = 0.028).