Table 1.

Radiation Therapy Oncology Group (RTOG) recursive partitioning analysis (RPA) groups in patients with locally-advanced non-small-cell lung cancer (LA-NSCLC).

RPA Group	Definition	Median survival (months)
I	KPS of > or = 90, who received chemotherapy	16.2
II	KPS of > or = 90, who received no CT, but had no PE	11.9
III	KPS < 90, younger than 70 years, with non-large cell histology	9.6
IV	KPS > or = 90, but with PE, or KPS < 90, younger than 70 years, and with large cell histology, or older than 70 years, but without PE	5.6–6.4
V	older than 70, with PE	2.9

Abbreviations: KPS: Karnofsky Performance Status; CT: Chemotherapy; PE: Pleural effusion.