In multivariate analysis , positive axillary nodal status ( adjusted odds ratio [ OR ] , 4.070 ; P = 0.002 ) , higher expression of p53 ( adjusted OR , 2.902 ; P = 0.038 ) , lobular mass shape ( adjusted OR , 4.979 ; P = 0.028 ) , and smooth mass margin ( adjusted OR , 5.123 ; P = 0.048 ) were independently associated with the young group .