Do you add any information to my data without my permission?

NHS Digital periodically inform us if study members have died. The files we receive from NHS Digital tell us when study members have died (month and year) and the cause of death.  Receiving this information helps us ensure we do not try to contact people who have died. We also use it for important research. In order to receive this information from the NHS we have to obtain special approval under Section 251 of the NHS Act 2006 from the NHS Confidentiality Advisory Group and the NHS Digital Data Access Advisory Group.

We also add information, which is not about you individually, but is about, for example, the school you went to or the area you live in. Any information like this provided to researchers is de-identified and cannot be used to find out who is in the study.