marginal significanceP =0.0763
In a second analysis with smoking status and tumour size, again a marginal significance for size was noticed ( P =0.0763; OR (95% CI): 1.02 (0.99–1.04)), whereas smoking status was not associated with FGFR1 amplification ( P =0.3890; OR (95% CI): 2.5 (0.31–20.1)).