We are pleased to present the fourth edition of Statistics for Evidence-Based Practice in Nursing, a resource designed to equip nursing students, educators, and practicing clinicians with the statistical knowledge necessary to engage in evidence-based decision making. As health care continues to evolve, the demand for nurses who can critically interpret data, evaluate research, and apply statistical reasoning to patient care has never been greater.

Building upon the success of previous editions, this updated version reflects the increasing importance of continuous quality improvement and how statistical analyses are foundational in those processes. We have carefully revised and expanded key sections to enhance clarity, deepen conceptual understanding, and provide up-to-date and relevant examples that align with current nursing practice. We have integrated new case studies, expanded the availability of data sets for practice, and increased the number of critical thinking questions as well as self-quizzes in each chapter. We have also updated the application of statistics for use in SPSS and Microsoft Excel and included additional practice datasets in each chapter to enhance hands-on learning and reinforce key concepts.

We remain committed to making statistics approachable and meaningful for nurses at all levels. Whether you are a student just beginning your journey in nursing research or a seasoned professional seeking to refine your analytical skills, we hope this edition serves as a valuable guide in your pursuit of evidence-based excellence.

Our thanks to the many educators, students, and professionals who have provided valuable feedback on previous editions, helping us refine and improve this text. Your insights and dedication to nursing education continue to inspire us.

We are eager to know how this edition supports your learning and enhances your ability to apply statistics in practice.