Multiple genetic alterations are common in cancers including those of the breast. The mechanisms leading to these alterations such as point mutations, gene amplifications, deletions and replication error are often associated with frequent and consistent loss of heterozygosity (LOH) or microsatellite instability (MSI). Several cytological and molecular studies have shown high frequency loss of g...

Background: Regarding nurses' significant role in improving quality of marital life in mastectomy patients and their families, implication of the adaptation model can help nurses reaching this goal. Aim: This study aimed to determine Effect of an educational-supportive program based on Roy This quasi-experimental study was performed on 69 mastectomy patients receiving chemotherapy in 2013 in cl...

This paper proposes a new identi cation and estimation method for the extended Roy model, in which the agents maximize their utility rather than just outcome. The identi cation results substantially relax conventional functional form restrictions. No functional form restriction is imposed on the distribution of the potential outcomes. The utility functions are allowed to be nonlinear so that it...

Background: The attitude towards lactation is one of the best predictors of breastfeeding. Iowa Infant Feeding Attitudes Scale (IIFAS) is used to measure the attitude toward lactation. IIFAS is a valid and reliable tool but factorial structure of this tool was reported various in different studies. The aim of this study is to assess factorial structure of IIFAS. Materials and Methods: An extens...

This paper studies non-parametric identi…cation and the testable implications of the Roy Model. Results in the literature are generalized in three directions. First, my model allows fully general functions that characterize the income of di¤erent occupations. Second, identi…cation is obtained using strictly weaker exclusion restrictions. For example, the model with additive heterogeneity is non...