Postal recruitment

The aim of the postal method was to recruit as many vegetarians as possible. Information about the study and questionnaires were sent to members of the Vegetarian Society of the UK, the Vegan Society, and previous participants in the Oxford Vegetarian Study, and also distributed through other health related magazines and health food shops. Potential participants were invited to complete the questionnaire after reading the information provided about the study. Participants recruited by this postal method were asked on the questionnaire if they would consent to the study team obtaining information from their NHS medical records. They were also asked if they would be willing to provide a blood sample, and if they agreed to this then their GP was then approached to take a blood sample on behalf of EPIC-Oxford.

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