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Impact of Postoperative Radiotherapy in the Survival of Patients Diagnosed with Advanced Lung Cancer Stages: A Retrospective Cohort Study | Abstract
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International Journal of Medical Research & Health Sciences (IJMRHS)
ISSN: 2319-5886 Indexed in: ESCI (Thomson Reuters)

Abstract

Impact of Postoperative Radiotherapy in the Survival of Patients Diagnosed with Advanced Lung Cancer Stages: A Retrospective Cohort Study

Author(s):Hassan Mohamed Eweidah, Heba Hamed Salem, Basma Ibrahim Abu-Elenen and Ahmed Mohamed Eweidah

Purpose: The aim of our study was to evaluate the impact of postoperative radiotherapy on the survival of lung cancer patients diagnosed with advanced carcinoma stages. Methods: We carried out a retrospective cohort study that consists of patients diagnosed with lung cancer from SEER database. The total analytical sample number of the study (n=130,291) was divided into two groups in regards to receiving Postoperative radiotherapy (PORT); intervention group (n=12,411) who received PORT and control group (n=117,880) who did not receive PORT. Chi-square test and Kaplan Meier method were used for performing the statistical analysis. Results: Observed survival rate of the intervention group, estimated by Kaplan-Meier method was found to be (76%, CI 95%), (65%, CI 95%), and (39%, CI 95%) for stages IIIA, IIIB and IV lung cancer respectively in comparison to the survival rates for patients with the same stages in the control group (55%, CI 95%), (45%, CI 95%), and (24%, CI 95%), respectively. Conclusion: Significant positive impact of postoperative adjuvant radiotherapy was noted on the overall survival of patients diagnosed with advanced lung cancer stages IIIA, IIIB and IV (p<0.05). 


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