RT Journal Article SR Electronic T1 Videotape as a research tool JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 300 OP 301 VO 33 IS 250 A1 M. O. Roland YR 1983 UL http://bjgp.org/content/33/250/300.abstract AB In a study of the natural history of back pain presenting in general practice, video recordings of consultations were used in the analysis of observer variation in the examination of the back. Video provided information which could not have been obtained from other sources and stimulated the doctors involved in the study to be meticulous in their examination technique.