The Pearl Index, also called the Pearl rate, is the most common technique used in clinical trials for reporting the effectiveness of a birth control method.
Read more about Pearl Index: Calculation and Usage, History, Criticisms
Famous quotes containing the words pearl and/or index:
“When Alexander Pope strolled in the city
Strict was the glint of pearl and gold sedans.
Ladies leaned out more out of fear than pity
For Pope’s tight back was rather a goat’s than man’s.”
—Allen Tate (1899–1979)
“Exile as a mode of genius no longer exists; in place of Joyce we have the fragments of work appearing in Index on Censorship.”
—Nadine Gordimer (b. 1923)