If you need a review of statistics, try some of these sources. You may also find helpful sources on the "Background" or "How to Read" pages.
Essentials of Nursing Research: Appraising Evidence for Nursing Practice (Gen Coll RT81.5.P63 2014)
Medical Uses of Statistics (Gen Coll RA409.M43 2009)
Munro's Statistical Methods for Health Care Research (Gen Coll RT81.5.M86 2013)
Primer of Biostatistics (Gen Coll RA409.G55 2002)
Statistics for Health Care Professionals: An Introduction (Gen Coll RA409.S323 2005)
Search TCNJ Books & Media for additional statistics titles. Useful Library of Congress Subject Headings for browsing include:
Medical statistics
Nursing-Research-Methodology