Statistics for nursing research : a workbook for evidence-based practice / Susan K. Grove, PhD, RN, ANP-BC, GNP-BC Professor Emerita, College of Nursing and Health Innovation, the University of Texas at Arlington, Arlington, Texas ; Adult Nurse Practitioner, Family Practice, Grand Prairie, Texas, Daisha J. Cipher, PhD, Associate Director of the Center for Research and Scholarship, Clinical Associate Professor, College of Nursing and Health Innovation, the University of Texas at Arlington, Arlington, Texas.