Browsing Hopkins Population Center Working Paper Archive by Author "Gray, Ronald H."
Demography and the Biomedical Sciences: The Integration of Demographic and Epidemiologic Approaches to Studies of Health in Developing Countries Gray, Ronald H. (Hopkins Population Center, 1985-06)
Gray, Ronald H. (Hopkins Population Center, 1992-11)
A Prospective Study of Adverse Pregnancy Outcomes Among Planned and Unplanned Pregnancies in Natural Family Planning Users Bitto, Adenike; Gray, Ronald H.; Simpson, Joe L.; Queenan, John T.; Kambic, Robert T.; Perez, Alfredo; Mena, Patricio; Barbato, Michele; Li, Chuanjun; Jennings, Victoria (Hopkins Population Center, 1996)Objectives. To prospectively determine whether unplanned pregnancies are associated with adverse pregnancy outcomes among users of natural family planning (NFP). Methods. Women who became pregnant while using NFP ...