Vitamin C is not associated with coronary heart disease risk once life course socioeconomic position is taken into account: prospective findings from the British women's heart and health study

Abstract
Data from the British Women’s Heart and Health Study were used. Full details of the selection of participants and measurements used in the study have been previously reported.4 Between 1999 and 2001, 4286 British women aged 60–79 years were interviewed, examined, completed medical questionnaires, and had detailed reviews of their medical records. These women have been followed up over a median of four years by flagging with the National Health Service (NHS) central register for mortality data and two yearly reviews of their medical records. This follow up is complete for all participants. Local ethics committee approval was obtained for the study.