Data overview
Available data
The International Journal of Epidemiology paper China Kadoorie Biobank of 0.5 million people: survey methods baseline characteristics and long-term follow up provides a comprehensive summary of the data collected. The baseline questionnaire and first, second and third resurvey questionnaires provide further details on individual data fields and their storage.
Data Release Schedule
This schedule includes an anticipated period of exclusive use for the CKB collaborative team in China and the UK following the completion of data collection and processing. During this period the CKB team will seek to engage with external collaborators on topics of particular interest.
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Data description |
China release |
Rest of world release |
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Baseline survey data (cross-sectional data including demographics, socio-economic status, lifestyle behaviours, medical history and physical measurements.) |
available now |
available now |
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Resurvey data (cross-sectional) |
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1st Resurvey data (c.20,000) |
available now |
available now |
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2nd Resurvey data (c.25,000) |
available now |
available now |
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Health outcome data (ICD-10 coded, Censor Date 1/1/2017) |
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Cause-specific mortality |
available now |
available now |
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Incident disease event |
available now |
available now |
The questionnaire categories and available cause specific mortality endpoints are shown on this Online Data Request Form (MS Word).
A global resource
The China Kadoorie Biobank is a global resource for the investigation of lifestyle, environmental and genetic factors as determinants of common chronic diseases. The CKB study group is committed to making the cohort data widely available to the scientific community in China, the UK and worldwide to advance knowledge about the causes, prevention and treatment of disease. See Study Resources for details of the data collected by the CKB.
Please send enquiries to
ckbaccess@ndph.ox.ac.uk (UK) or pdc@kscdc.net (China)
Data made available to external researchers through the CKB Data Access System has undergone all necessary quality control including standardisation, validation, and adjudication where appropriate.
