연구의 필요성위암은Purpose: The aims of this study was to identify factors associated with nutritional status after radical gastrectomy in patients with gastric cancer at the post 1 month and the post 3-6 months independently. Methods: Participants consisted of 107 patients at the post 1 month and 131 patients at the post 3-6 months after radical gastrectomy. Data were collected from October 1, 2013 to May 14, 2014 using a Patient-Generated Subjective Global Assessment (PG-SGA), the Hospital Anxiety and Depression Scale (HADS) and the Connor-Davidson Resilience Scale (CD-RISC). Results: Stepwise multiple regression showed that factors associated with nutritional status at 1 month after radical gastrectomy were age (β = .55, p < .001), anxiety (β = .25, p = .007), and depression (β = .23, p = .017), which explained the 42.6% of total variance of nutritional status. However, factors associated with nutritional status at 3-6 months after radical gastrectomy were depression (β= .41, p = .017), return to work (β= .20, p < .001), and age (β= .29, p = .024), which explained 27.1% of the total variance of nutritional status. Conclusion: In conclusion, oncology nurses should be sensitive to the risk group of aged, depressed, anxious and delayed return to work patients for nutritional status during the early recovery period after radical gastrectomy. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.