tokens: Univariate and multivariate analysis was used to calculate the 5 - year survival probabilities with respect to the following variables : age ( < or = 65 , > 65 ) , sex , depth of invasion ( mucosal , submucosal ) tumor location ( upper , middle and lower third ) , gross appearance ( type I , type II and type III ) , size ( < or = 1 . 5 cm , > 1 . 5 cm ) , presence or absence of lymph node metastasis , histological type ( intestinal , diffuse ) , extent of lymphadenectomy ( limited or extended ) , and type of gastrectomy ( total or distal subtotal ) .