title: Choose your tool wisely: u charts are more informative than run charts with or without tests of significance. A comment on Unbeck et al. (2014), Unbeck et al. (2013) and Kottner (2014).
authors.affiliation: Institute of Nursing Science, University of Basel and Inselspital Berne University Hospital, Switzerland. Electronic address: m.simon@unibas.ch.
authors.forename: Michael
authors.initials: M
authors.lastname: Simon
authors.affiliation: Health Services Research, Centre for Innovation and Leadership in Health Sciences, University of Southampton, UK.
authors.forename: Peter
authors.initials: P
authors.lastname: Griffiths
mesh_terms: D006801:Humans; D016530:Orthopedic Nursing; D003668:Pressure Ulcer / Q000517:prevention & control*; D011787:Quality of Health Care