نتایج جستجو برای: surrogate parents

تعداد نتایج: 104764  

Journal: :CoRR 2018
Yu-Hung Chang Liwei Zhang Xingjian Wang Shiang-Ting Yeh Simon Mak Chih-Li Sung C. F. Jeff Wu Vigor Yang

1 Kernel-smoothed proper orthogonal decomposition (KSPOD)-based emulation for prediction of spatiotemporally evolving flow dynamics Yu-Hung Chang a,*, Liwei Zhang a,**, Xingjian Wang a,†, Shiang-Ting Yeh a,††, Simon Mak b,‡, Chih-Li Sung b,‡, C. F. Jeff Wu b, §, Vigor Yang a, ¶ a School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA b School of Industrial and ...

Journal: :Biometrics 2013
Tyler J Vanderweele

Surrogates which allow one to predict the effect of the treatment on the outcome of interest from the effect of the treatment on the surrogate are of importance when it is difficult or expensive to measure the primary outcome. Unfortunately, the use of such surrogates can give rise to paradoxical situations in which the effect of the treatment on the surrogate is positive, the surrogate and out...

1998
Michael Small Kevin Judd

Currently surrogate data analysis can be used to determine if data is consistent with various linear systems, or something else (a nonlinear system). In this paper we propose an extension of these methods in an attempt to make more specific classifications within the class of nonlinear systems. In the method of surrogate data one estimates the probability distribution of values of a test statis...

2017
Behnood Bikdeli Natdanai Punnanithinont Yasir Akram Ike Lee Nihar R. Desai Joseph S. Ross Harlan M. Krumholz

BACKGROUND Surrogate endpoint trials test strategies more efficiently but are accompanied by uncertainty about the relationship between changes in surrogate markers and clinical outcomes. METHODS AND RESULTS We identified cardiovascular trials with primary surrogate endpoints published in the New England Journal of Medicine, Lancet, and JAMA: Journal of the American Medical Association from 1...

2016
Yaojiang Shi Yu Bai Yanni Shen Kaleigh Kenny Scott Rozelle

China’s rapid development and urbanization have induced large numbers of rural residents to migrate from their homes in the countryside to urban areas in search of higher wages. It is estimated that there are more than 60 million “left-behind children” (LBC) remaining in the countryside after their parents migrate, typically living with surrogate caregivers. Extensive research has focused on th...

2010
Sylvia Dermout Harry van de Wiel Peter Heintz Kees Jansen Willem Ankum

BACKGROUND Surrogacy was prohibited in the Netherlands until 1994, at which time the Dutch law was changed from the general prohibition of surrogacy to the prohibition of commercial surrogacy. This paper describes the results from the first and only Dutch Centre for Non-commercial IVF Surrogacy between 1997 and 2004. METHODS A prospective study was conducted of all intended parents, and surro...

2017
Nicolás Ruiz-Robledillo Luis Moya-Albiol

Innovation in assisted reproductive technologies together with increased infertility and new family structures are increasing the use of gestational surrogacy as a means to have children. Before, during and after the process, it is necessary to study the psychosocial characteristics of triad members: the gestational surrogate, intended parents, and offspring. Research has indicated positive ada...

Journal: :Acta dermatovenerologica Alpina, Pannonica, et Adriatica 2006
Gregor B E Jemec Solveig Esmann Elisabeth A Holm Andreas Tycho Thomas Martini Martini Jørgensen

INTRODUCTION Time spent on treatment (TSOT) appears to reflect disease severity in pediatric patients with atopic dermatitis (AD). Our purpose was to examine the relationship between time spent on treatment and parental psychological parameters such as anxiety and depression. METHODS TSOT was studied in a group of parents of patients with AD participating in an eczema school. TSOT included al...

Journal: :Journal of medical ethics 2004
M Häyry

M any women and men, usually in the 20–50 age cohort, suffer from a condition that can be called prereproductive stress syndrome. The primary symptom is that these individuals have an urge to have children. Secondary symptoms, which are many and varied, can include a conviction that this urge is self evidently reasonable, and an illusion that others should help them in satisfying it. The syndro...

Journal: :Human reproduction update 2016
Viveca Söderström-Anttila Ulla-Britt Wennerholm Anne Loft Anja Pinborg Kristiina Aittomäki Liv Bente Romundstad Christina Bergh

BACKGROUND Surrogacy is a highly debated method mainly used for treating women with infertility caused by uterine factors. This systematic review summarizes current levels of knowledge of the obstetric, medical and psychological outcomes for the surrogate mothers, the intended parents and children born as a result of surrogacy. METHODS PubMed, Cochrane and Embase databases up to February 2015...

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