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Colorectal cancer incidence in younger adults in India
  1. Aju Mathew1,2,
  2. Basil Baby2,
  3. Kevin Wang1,
  4. Bhawna Sirohi3,
  5. Feintong Lei4,
  6. Quan Chen5,
  7. Bin Huang4,5
  1. 1Department of Internal Medicine, University of Kentucky, Lexington, Kentucky, USA
  2. 2MOSC Medical College Hospital, Kolenchery, Kerala, India
  3. 3Max Institute of Cancer Care, New Delhi, India
  4. 4Department of Biostatistics, College of Public Health, University of Kentucky, Lexington, Kentucky, USA
  5. 5Biostatistics and Bioinformatics Shared Facility, Markey Cancer Center, University of Kentucky, Lexington, KY, USA
  1. Correspondence to Dr Aju Mathew, MOSC Medical College, Kolenchery, Kochi 682311, India; drajumathew{at}gmail.com

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Siegel et al1 described patterns of colorectal cancer (CRC) incidence in young adults worldwide. In India, their estimates were based on data from a single population-based cancer registry (PBCR) in the southern Indian state of Tamil Nadu, representing 0.5% of Indian population (Chennai PBCR). India is a large country of more than a billion people. We analysed data from 14 PBCRs, representing 65 million people (5% of Indian population).2 PBCRs included in our study were Ahmedabad, Bangalore, Barshi, Bhopal, Chennai, Delhi, Dibrugarh, Kamrup, Kolkata, Manipur, Mizoram, Mumbai, Sikkim and Thiruvananthapuram.

We calculated age-standardised incidence rates (according to WHO World Standard Population 2000) for 5-year age groups for periods of diagnosis (2004–2005, 2006–2008, 2009–2011, 2012–2014), and categorised them as …

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Footnotes

  • Twitter @ajumathew_

  • Contributors All authors made significant contributions to the manuscript.

  • Funding This study was supported by Markey Cancer Center grant awarded to Aju Mathew.

  • Competing interests None declared.

  • Patient consent for publication Not required.

  • Provenance and peer review Not commissioned; internally peer reviewed.

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