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. See also summary of available blood biomarker data.
DATA SHowcase
Study data can be viewed in detail using our online Data Showcase.
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 |
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 |
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Resurvey data (cross-sectional) |
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1st Resurvey data (c.20,000) |
available now |
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2nd Resurvey data (c.25,000) |
available now |
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Health outcome data (ICD-10 coded, Censor Date 1/1/2019) |
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Cause-specific mortality |
available now |
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Incident disease event |
available now |
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Blood biomarker data |
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Various blood biomarker datasets (up to c.20,000) |
available now |
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Genetic data |
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| Access to individual participant genetic data is currently constrained by China’s Administrative Regulations on Human Genetic Resources, for which collaboration with CKB researchers is generally required. CKB is also developing cloud-based system to facilitate future direct access. Please contact study group for further information. | |
The questionnaire categories and available cause specific mortality endpoints are shown on this Online Data Request Form (Word document).
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 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.
