OBJECTIVES To investigate if live births conceived in months when surface water agrichemicals are highest are at greater risk for birth defects. METHODS Monthly concentrations during 1996-2002 of nitrates, atrazine and other pesticides were calculated using United States Geological Survey's National Water Quality Assessment data. Monthly United States birth defect rates were calculated for li...

Background and purpose: Prematurity birth occurs when a newborn is born before the thirty seventh week of pregnancy. Preterm birth is the most expensive and the most common health problem. So, the aim of this study was to do epidemiological survey of prematurity in Gonbad-e Kavous in 2010. Materials and Methods: This sectional- descriptive study was carried out on 172 premature babies with cens...

PROBLEM In Japan, marital age and women's age at the first pregnancy are continuing to increase year by year. However, information concerning subsequent live birth rate according to maternal age and number of previous recurrent miscarriages is limited. METHOD OF STUDY We studied a total of 1250 unexplained patients suffering two or more consecutive miscarriages. We examined the live birth rat...

OBJECTIVE To estimate age-specific probabilities of live birth with oocyte cryopreservation in nondonor (ND) egg cycles. DESIGN Individual patient data meta-analysis. SETTING Assisted reproduction centers. PATIENT(S) Infertile patients undergoing ND mature oocyte cryopreservation. INTERVENTION(S) PubMed was searched for clinical studies on oocyte cryopreservation from January 1996 throu...

BACKGROUND Many studies on assisted reproductive technology examine live birth rate per cycle. However, after a cycle fails, couples often want to know what their chances are of having a live birth if they continue treatment. From a patients' perspective, the cumulative probability of live birth is more informative. MATERIALS AND METHODS This study includes patients who underwent fresh, froze...

Background: Twin pregnancy consist a healthy fetus, and hydatidium molar pregnancy is unusual and very rare. Its incidence is in about 1,22,000 to 1,100,000 of all pregnancies. This type of pregnancy is commonly associated with several obstetric complications requiring early termination of pregnancy. Managing a twin mole pregnancy with normal and live fetuses is controversial, although this unu...