RT Book, Section A1 Yang, Yi A1 West-Strum, Donna SR Print(0) ID 57222078 T1 Glossary T2 Understanding Pharmacoepidemiology YR 2011 FD 2011 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-163500-4 LK accesspharmacy.mhmedical.com/content.aspx?aid=57222078 RD 2024/11/04 AB Absolute risk reduction The absolute value of the arithmetic difference in the event rates of the treated and untreated groups.