Journal of Occupational
Health and Epidemiology
Rafsanjan university Of medical sciences
Volume 11, Issue 1 (Winter 2022)
J Occup Health Epidemiol 2022, 11(1): 1-9 |
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Hashemipour E, Vazirinejad R, Sheikh Fatholahi M, Rezaian M. The Survival Rate of Patients with Colorectal Cancer in Kerman Province of Iran from 2007 to 2016. J Occup Health Epidemiol 2022; 11 (1) :1-9
URL: http://johe.rums.ac.ir/article-1-460-en.html
URL: http://johe.rums.ac.ir/article-1-460-en.html
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1- MSc in Epidemiology, Dept. of Epidemiology and Biostatistics, School of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran.
2- Professor, Social Determinants of Health Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran.
3- Assistant Prof., of Biostatistics, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran.
4- Professor, Head of Dept. of Epidemiology and Biostatistics, Occupational Environmental Research Center, School of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran. , moeygmr2@yahoo.co.uk
2- Professor, Social Determinants of Health Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran.
3- Assistant Prof., of Biostatistics, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran.
4- Professor, Head of Dept. of Epidemiology and Biostatistics, Occupational Environmental Research Center, School of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran. , moeygmr2@yahoo.co.uk
Article history
Received: 2021/08/15
Accepted: 2022/01/22
ePublished: 2022/06/12
Accepted: 2022/01/22
ePublished: 2022/06/12
Subject:
Epidemiology
Abstract: (1304 Views)
Background: This paper presents the conditional relative survival rates of colorectal cancer (CRC) and associated prognostic factors in the Kerman province, the largest province in the south of Iran. Scince CRC is the fifth common cancer in this province, this study aimed to provide more detailed statistics on the survival rate of CRC patients.
Materials and Methods: This survival analysis study used the national population-based cancer registry data to estimate the survival rate in 1705 patients with CRC from 2007 to 2016. The Kaplan–Meier estimator and Log-rank test were used to plot survival curves and assess differences in survival rates. Univariate analysis and Cox proportional-hazards model were also used to determine association between CRC-related factors and patient survival.
Results: The 5-year survival rate for patients with CRC was 51.9%. This rate was significantly higher in the stage with localized lesions compared with those of regional and distant (p<0.001). The survival rate in patients undergoing surgical treatment was higher than that of patients receiving chemotherapy (p<0.001). Increased age, low tumor differentiation, the stage with distant tumors, and right-sided colon cancer (RCC) were associated with lower survival (p<0.001).
Conclusions: The tumor stage was significantly correlated with the survival rate of patients. Despite advances in the diagnosis and treatment of CRC in Iran and worldwide, the survival rate of patients in this study was low. Since many factors affect this rate, further studies are needed to identify its prognostic factors in Kerman.
Materials and Methods: This survival analysis study used the national population-based cancer registry data to estimate the survival rate in 1705 patients with CRC from 2007 to 2016. The Kaplan–Meier estimator and Log-rank test were used to plot survival curves and assess differences in survival rates. Univariate analysis and Cox proportional-hazards model were also used to determine association between CRC-related factors and patient survival.
Results: The 5-year survival rate for patients with CRC was 51.9%. This rate was significantly higher in the stage with localized lesions compared with those of regional and distant (p<0.001). The survival rate in patients undergoing surgical treatment was higher than that of patients receiving chemotherapy (p<0.001). Increased age, low tumor differentiation, the stage with distant tumors, and right-sided colon cancer (RCC) were associated with lower survival (p<0.001).
Conclusions: The tumor stage was significantly correlated with the survival rate of patients. Despite advances in the diagnosis and treatment of CRC in Iran and worldwide, the survival rate of patients in this study was low. Since many factors affect this rate, further studies are needed to identify its prognostic factors in Kerman.
Keywords: Colorectal Neoplasms [MeSH], Survival Rate [MeSH], Kaplan–Meier Estimate [MeSH], Proportional Hazards Models [MeSH], Confidence Interval (CI) [MeSH]
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