borderline significanceP=0.054
As indicated in Table I , high protein expression levels of MTA1 were significantly correlated with the size of the tumor (P=0.030) and lymph node metastasis (P=0.021), whereas no significant differences were detected among the protein expression levels of MTA1 on the basis of the patients' gender (P=0.758), age (P=0.204), histological subtypes (P=0.351), differentiation (P=0.978), pleural invasion (P=0.819) and pathological stage (P=0.054, which may be considered borderline significance).