L
Livia Wan
Researcher at New York University
Publications - 33
Citations - 987
Livia Wan is an academic researcher from New York University. The author has contributed to research in topics: Levonorgestrel & Population. The author has an hindex of 17, co-authored 32 publications receiving 950 citations. Previous affiliations of Livia Wan include Chongqing University.
Papers
More filters
Journal ArticleDOI
The performance of levonorgestrel rod and Norplant contraceptive implants: a 5 year randomized study
Irving Sivin,Italo Campodonico,Orawan Kiriwat,Pentti Holma,Soledad Diaz,Livia Wan,Arijit Biswas,O. A. C. Viegas,K. El Din Abdalla,Manee Piya Anant,Margarita Pavez,Janet Stern +11 more
TL;DR: With these contraceptives indistinguishable in performance except for ease and speed of removal, LNG rod implants appear to be preferable to Norplant for use through 5 years by virtue of relative ease of removal.
Journal ArticleDOI
Levonorgestrel capsule implants in the United States: a 5-year study
TL;DR: In this article, a prospective, multicenter study, 511 sexually active women selecting contraceptive implants were monitored four times in the 1st year, then semiannually through 5 years, with an average annual rate of three per 1000 women, and an ectopic pregnancy rate of 0.6 per 1000 woman years.
Journal ArticleDOI
Levonorgestrel concentrations during 7 years of continuous use of Jadelle contraceptive implants.
Irving Sivin,Livia Wan,Sirpa Ranta,Francisco J. Alvarez,Vivian Brache,Daniel R. Mishell,Philip D. Darney,Arijit Biswas,Soledad Diaz,Orawan Kiriwat,Manee Piya Anant,Cynthia Klaisle,Margarita Pavez,Janet Schechter +13 more
TL;DR: In this paper, drug levels, patterns of changes, factors affecting drug levels and concentrations at which pregnancies occurred were examined in a multicenter, 7-year study of 199 users of Jadelle rod implants.
Journal ArticleDOI
Levonorgestrel concentrations during use of levonorgestrel rod (LNG ROD) implants
Irving Sivin,Pekka Lähteenmäki,Sirpa Ranta,Philip D. Darney,Cindy Klaisle,Livia Wan,Daniel R. Mishell,Maria Lacarra,O. A. C. Viegas,Prapas Bilhareus,Suporn Koetsawang,Manee Piya-Anant,Soledad Diaz,Margarita Pavez,Francisco J. Alvarez,Vivian Brache,Katherine D. LaGuardia,Harold A. Nash,Janet Stern +18 more
TL;DR: Evidence is provided that the minimum levonorgestrel concentration needed to protect against pregnancy is below 200 pg/ ml, and possibly is below 175 pg/ml.
Journal ArticleDOI
Clinical performance of a new two-rod levonorgestrel contraceptive implant: A three-year randomized study with Norplant® implants as controls
Irving Sivin,O. A. C. Viegas,O. A. C. Viegas,Italo Campodonico,Soledad Diaz,Margarita Pavez,Livia Wan,Suporn Koetsawang,Orawan Kiriwat,Manee Piya Anant,Pentti Holma,Kamal el din Abdalla,Janet Stern +12 more
TL;DR: There were neither statistically significant nor important differences in termination rates for any reason over the three years, and complaint and illness rates during use of either of the two implant types were statistically indistinguishable and were attributable to the same set of conditions.