Trends and variations in breast and colorectal cancer incidence from 1995 to 2011: a comparative study between Texas Cancer Registry and National Cancer Institute's Surveillance, Epidemiology and End Results data.

Zheyu Liu,Hua Xu,Luisa Franzin,Yefei Zhang,Janice N Cormier,Xianglin L Du,Wenyaw Chan

doi:10.3892/ijo.2015.2881

Abstract

Few studies have examined the cancer incidence trends in the state of Texas, and no study has ever been conducted to compare the temporal trends of breast and colorectal cancer incidence in Texas with those of the National Cancer Institute’s Surveillance, Epidemiology and End Results (SEER) in the United States. This study aimed to conduct a parallel comparison between the Texas Cancer Registry and the National Cancer Institute’s SEER on cancer incidence from 1995 to 2011. A total of 951,899 breast and colorectal cancer patients were included. Age-adjusted breast cancer incidence was 134.74 per 100,000 in Texas and 131.78 per 100,000 in SEER in 1995–2011, whereas age-adjusted colorectal cancer incidence was 50.52 per 100,000 in Texas and 49.44 per 100,000 in SEER. Breast cancer incidence increased from 1995 to 2001, decreased from 2002 to 2006, and then remained relatively stable from 2007 to 2011. For colorectal cancer, the incidence increased in 1995–1997, and then decreased continuously from 1998 to 2011 in Texas and SEER areas. Incidence rates and relative risks by age, gender and ethnicity were identical between Texas and SEER.

Highlights

Breast cancer is the most commonly diagnosed cancer in women in the United States, while colorectal cancer is one of the top three most commonly diagnosed cancers among menKey words: breast cancer, colorectal cancer, incidence rates, trends, relative risks and women [1,2,3]
We examined the variations in cancer incidence rates by age, gender, ethnicity, tumor stage and tumor grade in the Texas Cancer Registry (TCR) and SEER areas
The findings from this parallel comparison are expected to provide a significant overview of cancer incidence trends at the state and national level, and to identify important factors associated with a decreasing risk of cancer, which are critical to enhance cancer prevention and control

Summary

Introduction

Breast cancer is the most commonly diagnosed cancer in women in the United States, while colorectal cancer is one of the top three most commonly diagnosed cancers among men. A number of studies have examined Surveillance, Epidemiology and End Results (SEER) data for national cancer incidence trends and variations by age, ethnicity, cancer stage and other factors in the USA [18,19,20,21,22,23]. We examined the variations in cancer incidence rates by age, gender, ethnicity, tumor stage and tumor grade in the TCR and SEER areas. The findings from this parallel comparison are expected to provide a significant overview of cancer incidence trends at the state and national level, and to identify important factors associated with a decreasing risk of cancer, which are critical to enhance cancer prevention and control

Objectives

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Conclusion