Steven A. Frost1,2, Evan Alexandrou1,2 1School of Nursing and Midwifery, University of Western Sydney, Penrith, New South Wales, Australia 2Department of Intensive Care, Intensive Care, Liverpool Hospital, Liverpool, New South Wales, Australia Contacto: Steven A. Frost. ?University of Western Sydney, Campbelltown Campus, Bld 7 locked bag 1797, Penrith, NSW 2751, Australia; [S.Frost@uws.edu.au] Comentario sobre: Diya L, Van den Heede K, Sermeus W, Lesaffre E. The relationship between in-hospital mortality, readmission into the intensive care nursing unit and/or operating theatre and nurse staffing levels. J Adv Nurs 2012; 68:1073?81. ...