Histogram of depression score changes Histogram of depression score changes. (Data, used with permission, from Henderson AS, Korten AE, Jacomb PA, Mackinnon AJ, Jorm AF, Christensen H, et al: The course of depression in the elderly: A longitudinal community-based study in Australia. Psychol Med 1997;27:119–129. Output produced using NCSS; used with permission.) Source: Appendix B: Answers to Exercises, Basic & Clinical Biostatistics, 4e Citation: Dawson B, Trapp RG. Basic & Clinical Biostatistics, 4e; 2004 Available at: https://accesspharmacy.mhmedical.com/DownloadImage.aspx?image=/data/Books/daws/daws_c015f004.gif&sec=40089448&BookID=356&ChapterSecID=40086294&imagename= Accessed: November 14, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved