Glossary A | B | C | D | E | F | G | H | I | K | L M | N | O | P | Q | R | S | T | V | W | Z To look up a glossary term, select its first letter from the list above. Glossary material from Hulley SB et al. Designing Clinical Research, 4th ed. Philadelphia, Lippincott Williams & Wilkins, 2013.