Fig. 3From: Fractionated palliative thoracic radiotherapy in non-small cell lung cancer – futile or worth-while?Cox regression analysis showing correlation between OS and histology from prescription of PTR to death. There was a significant difference in OS and histology, favoring squamous-cell carcinoma (SCC) over adenocarcinoma (AC). SCC had a HR = 0.63 (95% CI: 0.46 to 0.89), p = 0.007Back to article page