a trend towards significanceP =0.09
pN+, P =0.09, indicating a trend towards significance), but not for pT (pT1 vs. pT2, P =0.29), or grade (G1 vs.
pN+, P =0.09, indicating a trend towards significance), but not for pT (pT1 vs. pT2, P =0.29), or grade (G1 vs.
Statistical significance was assumed for a P -value of <0.05, while values in the range of 0.05≤ P <0.10 were considered as indicating a statistical trend.