TY - JOUR T1 - Incidence of and risk factors for nodding off at scientific sessions JF - Canadian Medical Association Journal JO - CMAJ SP - 1443 LP - 1445 DO - 10.1503/cmaj.1041570 VL - 171 IS - 12 AU - Kenneth Rockwood AU - David B. Hogan AU - Christopher J. Patterson A2 - , Y1 - 2004/12/07 UR - http://www.cmaj.ca/content/171/12/1443.abstract N2 - We conducted a surreptitious, prospective, cohort study to explore how often physicians nod off during scientific meetings and to examine risk factors for nodding off. After counting the number of heads falling forward during 2 days of lectures, we calculated the incidence density curves for nodding-off episodes per lecture (NOELs) and assessed risk factors using logistic regression analysis. In this article we report our eye-opening results and suggest ways speakers can try to avoid losing their audience. ER -