Cumulative pregnancy rates in patients with apparently normal fertility and fertility-focused intercourse.
Fifty consecutive clients achieved pregnancy using a standardization modification of the Billings ovulation method (the Creighton Model Natural Family Planning System). Of 50 clients followed, 38 (76%) achieved pregnancy in the first cycle of fertility-focused intercourse, 45 of 50 (90%) achieved pregnancy by the third cycle and 49 of 50 achieved pregnancy by the sixth cycle (98%).
Hilgers
T W
TW
Department of Obstetrics and Gynecology, Creighton University School of Medicine, Omaha, Nebraska.
Daly
K D
KD
Prebil
A M
AM
Hilgers
S K
SK
D000328:Adult; D002582:Cervix Mucus; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D012252:Natural Family Planning Methods; D011247:Pregnancy; D011446:Prospective Studies