Data Overview

Details of the data collected by the CKB are provided on the Study Resources section of the website. Data made available to external researchers through the CKB Data Access System will have undergone all necessary quality control including standardization, validation, and adjudication where appropriate. The schedule below 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 actively seek to engage with external collaborators on topics of particular interest. 

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 Questionnaire1st Resurvey Questionnaire and 2nd Resurvey Questionnaire provide further details on individual data fields and their storage. 

Data Release Schedule

Data Description

China release:

Rest of World release:

Baseline (Cross-sectional data including demographics, socio-economic status, lifestyle behaviours, medical history and physical measurements)

Baseline survey data (Censor Date 1/1/2015)

AVAILABLE NOW

AVAILABLE NOW

Baseline survey data (Censor Date 1/1/2016)

NOVEMBER  2019

NOVEMBER  2019

Resurvey Data (Cross-sectional)

1st Resurvey Data (c.20,000)           

AVAILABLE NOW

AVAILABLE NOW

2nd Resurvey Data (c.25,000)

NOVEMBER  2019

APRIL 2020

Follow-up / prospective data (ICD-10 coded)

Cause-Specific Mortality 

AVAILABLE NOW

AVAILABLE NOW

Incident Disease (from registries and health insurance)

NOVEMBER  2019

APRIL 2020

 

A Microsoft Word version of the Online Data Request Form provides details of the questionnaire categories and cause specific mortality endpoints that are available.