정승연 교수

최근으로 올수록 대학 진학 당시 정하게 되는 전공에 더해 재학 중 다른 전공을 추가 선택하는 다양한 제도들에 대한 사회적 관심과 필요성이 제기되고 있다. 기존 연구들은 대체로 이들 제도의 효과성에 대해 분석해 온 반면, 어떤 학생들이 어떻게 단일전공을 넘어 복수전공을 선택하게 되는지에 대한 연구는 드물었다. 우리 연구는 대졸자직업이동경로조사 데이터와 순차서열로짓모형을 이용해 복수전공 여부 및 높은 편익을 기대할 수 있는 복수전공 선택 여부가 젠더와 사회경제적 지위(가족배경)와 기존 성취 지위(원전공 및 대학 특성)에 따라 어떻게 달라지는지 분석했다. 분석 결과는 크게 네 가지로 정리할 수 있다. 첫째, 고학력 부모 자녀들일수록, 상위권 대학 진학자일수록 복수전공 참여 확률이 높았다. 둘째, 비이공계열 전공자들일수록 복수전공 확률은 높아졌으나 높은 편익을 기대할 수 있는 복수전공 선택 가능성은 원전공이 이공계열 및 높은 편익 기대 전공일수록 오히려 높아졌다. 셋째, 전반적으로 기존의

Purpose: Intensity-modulated radiotherapy (IMRT) allows for more precise treatment, reducing unwanted radiation to nearby structures. We investigated the safety and feasibility of IMRT for anaplastic ependymoma patients below 3 years of age. Materials and Methods: A total of 9 anaplastic ependymoma patients below 3 years of age, who received IMRT between October 2011 and December 2017 were retrospectively reviewed. The median equivalent dose in 2 Gy fractions was 52.0 Gy (range, 48.0 to 60.0 Gy)

Purpose: To evaluate intracranial control after surgical resection according to the adjuvant treatment received in order to assess the optimal radiotherapy (RT) dose and volume. Materials and Methods: Between 2003 and 2015, a total of 53 patients with brain oligometastases from non-small cell lung cancer (NSCLC) underwent metastasectomy. The patients were divided into three groups according to the adjuvant treatment received: whole brain radiotherapy (WBRT) ± boost (WBRT ± boost group, n = 26),

Purpose The purpose of this study was to compare the treatment outcomes of definitive radiotherapy (RT) with cordectomy in patients with early glottic cancer. Materials and Methods A total of 165 patients who were diagnosed with T1/2 squamous cell carcinoma of the glottic larynx between January 2006 and December 2012 were retrospectively analyzed. A total of 112 patients received RT and 53 patients received cordectomy. Local control (LC), diseasefree survival (DFS), overall survival (OS), and la

Purpose In this retrospective study, we compared the incidence of leptomeningeal carcinomatosis or dural metastasis (LMCDM) in patients who received whole brain radiotherapy (WBRT), partial radiotherapy (PRT), or no radiotherapy (RT) following resection of brain metastases from breast cancer. Materials and Methods Fifty-one patients with breast cancer underwent surgical resection for newly diagnosed brain metastases in two institutions between March 2001 and March 2015. Among these, 34 received

Purpose Radiation-induced lymphopenia is associated with worse outcomes in solid tumors. We assessed the impact of interleukin-7 (IL-7), a key cytokine in lymphocyte homeostasis, on radiation-induced lymphopenia. Materials and Methods A post-hoc analysis was performed in a prospective cohort of 98 patients with hepatocellular carcinoma who were treated with radiotherapy in 2016-2018. Blood IL-7 levels were assayed before and at the end of radiotherapy. Acute severe lymphopenia (ASL) was defined

Purpose: Although stereotactic ablative body radiotherapy (SABR) is widely used therapeutic technique, predictive factors of radiation pneumonitis (RP) after SABR remain undefined. We aimed to investigate the predictive factors affecting RP in patients with primary or metastatic lung tumors who received SABR. Materials and Methods: From 2012 to 2015, we reviewed 59 patients with 72 primary or metastatic lung tumors treated with SABR, and performed analyses of clinical and dosimetric variables re