Indicele Pearl: Siguranța metodelor contraceptive
Contraceptive options and their safety The Pearl Index (PI; named after the American biologist Raymond Pearl (1879-1940)) describes the reliability of a contraceptive measure (measure of contraception) by means of the number of gravidities (pregnancies) that occurred per 1,200 cycles of use or per 100 years of use. A Pearl index of 0.1 means that … Indicele Pearl: Siguranța metodelor contraceptive