METHODS	Patients older than 70 years with unresectable stage III NSCLC were randomly assigned to chemoradiotherapy ( 60 Gy plus concurrent low-dose carboplatin [ 30 mg/m ( 2 ) per day , 5 days a week for 20 days ] ) or radiotherapy alone , using a minimisation method with biased-coin assignment balancing on Eastern Cooperative Oncology Group ( ECOG ) performance status ( 0 vs 1 vs 2 ) , stage ( IIIA vs IIIB ) , and institution .\