An analysis of the impact of NSCLC histology on the treatment effect on overall survival was in favour of ALIMTA versus docetaxel for other than predominantly squamous histologies (n=399, 9.3 versus 8.0 months, adjusted HR = 0.78; 95% CI =0 .61-1.00, p =0.047) and was in favour of docetaxel for squamous cell carcinoma histology (n=172, 6.2 versus 7.4 months, adjusted HR = 1.56; 95% CI =1.08-2.26, p =0.018).