Asian Pacific Journal of Cancer Prevention

Asian Pacific Journal of Cancer Prevention (아시아태평양암예방학회)
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Application of Cox and Parametric Survival Models to Assess Social Determinants of Health Affecting Three-Year Survival of Breast Cancer Patients

  • Mohseny, Maryam (Department of Community Medicine, Shahid Beheshti University of Medical Sciences) ;
  • Amanpour, Farzaneh (Department of Epidemiology and Biostatistics, School of Public Health, Shahroud University of Medical Sciences) ;
  • Mosavi-Jarrahi, Alireza (Department of Community Medicine, Shahid Beheshti University of Medical Sciences) ;
  • Jafari, Hossein (Taleghani Hospital, Shahid Beheshti University of Medical Sciences) ;
  • Moradi-Joo, Mohammad (Taleghani Hospital, Shahid Beheshti University of Medical Sciences) ;
  • Monfared, Esmat Davoudi (Department of Community Medicine, Baqiyatallah University of Medical Sciences)
  • Published : 2016.06.01
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Abstract

Breast cancer is one of the most common causes of cancer mortality in Iran. Social determinants of health are among the key factors affecting the pathogenesis of diseases. This cross-sectional study aimed to determine the social determinants of breast cancer survival time with parametric and semi-parametric regression models. It was conducted on male and female patients diagnosed with breast cancer presenting to the Cancer Research Center of Shohada-E-Tajrish Hospital from 2006 to 2010. The Cox proportional hazard model and parametric models including the Weibull, log normal and log-logistic models were applied to determine the social determinants of survival time of breast cancer patients. The Akaike information criterion (AIC) was used to assess the best fit. Statistical analysis was performed with STATA (version 11) software. This study was performed on 797 breast cancer patients, aged 25-93 years with a mean age of 54.7 (${\pm}11.9$) years. In both semi-parametric and parametric models, the three-year survival was related to level of education and municipal district of residence (P<0.05). The AIC suggested that log normal distribution was the best fit for the three-year survival time of breast cancer patients. Social determinants of health such as level of education and municipal district of residence affect the survival of breast cancer cases. Future studies must focus on the effect of childhood social class on the survival times of cancers, which have hitherto only been paid limited attention.

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References

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