RT Journal Article SR Electronic T1 Colour tagging of medical records and age—sex cards JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 520 OP 521 VO 35 IS 280 A1 J.H. Nightingale A1 R.J. Walton YR 1985 UL http://bjgp.org/content/35/280/520.abstract AB The colour tagging of medical records and age—sex cards is described. The system of eight colour tags originally recommended by the Royal College of General Practitioners was used as a basis but was modified and the number of colour tags extended to 13. These tags were applied to medical records and age—sex cards. The colour-coded age—sex registers thus serve as effective chronic morbidity and at-risk registers.