4.6 Article

Urban-rural disparity in cancer incidence in China, 2008-2012: a cross-sectional analysis of data from 36 cancer registers

期刊

BMJ OPEN
卷 11, 期 4, 页码 -

出版社

BMJ PUBLISHING GROUP
DOI: 10.1136/bmjopen-2020-042762

关键词

epidemiology; oncology; public health

资金

  1. Swedish Cancer Society [190043]
  2. Karolinska Institutet Research Foundation [2018-01558]

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The study found substantial urban-rural disparity in cancer incidence in China, with lower cancer rates in rural areas for women but higher rates for men. There were variations in incidence rates across different cancer types between rural and urban areas.
Objective The substantial differences in socioeconomic and lifestyle exposures between urban and rural areas in China may lead to urban-rural disparity in cancer risk. This study aimed to assess the urban-rural disparity in cancer incidence in China. Methods Using data from 36 regional cancer registries in China in 2008-2012, we compared the age-standardised incidence rates of cancer by sex and anatomic site between rural and urban areas. We calculated the rate difference and rate ratio comparing rates in rural versus urban areas by sex and cancer type. Results The incidence rate of all cancers in women was slightly lower in rural areas than in urban areas, but the total cancer rate in men was higher in rural areas than in urban areas. The incidence rates in women were higher in rural areas than in urban areas for cancers of the oesophagus, stomach, and liver and biliary passages, but lower for cancers of thyroid and breast. Men residing in rural areas had higher incidence rates for cancers of the oesophagus, stomach, and liver and biliary passages, but lower rates for prostate cancer, lip, oral cavity and pharynx cancer, and colorectal cancer. Conclusions Our findings suggest substantial urban-rural disparity in cancer incidence in China, which varies across cancer types and the sexes. Cancer prevention strategies should be tailored for common cancers in rural and urban areas.

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