翻訳と辞書 Words near each other ・ Fraham ・ Frahang-i Oim-evak ・ Frahang-i Pahlavig ・ Frahelž ・ Fraher Field ・ Frahier-et-Chatebier ・ Frahm ・ Fraiburgo ・ Fraidy Cat ・ Fragile Allegiance ・ Fragile base class ・ Fragile binary interface problem ・ Fragile Bird ・ Fragile Equality ・ Fragile Eternity ・ Fragile Families and Child Wellbeing Study ・ Fragile Figures ・ Fragile Future ・ Fragile Heart ・ Fragile Machine ・ Fragile matter ・ Fragile mental retardation 2 ・ Fragile Records ・ Fragile state ・ Fragile States Index ・ Fragile Tension / Hole to Feed ・ Fragile Things ・ Fragile Tour ・ Fragile Vastness ・ Fragile X syndrome Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Fragile Families and Child Wellbeing Study ： ウィキペディア英語版 Fragile Families and Child Wellbeing Study The Fragile Families and Child Wellbeing Study (FFCWS) is a longitudinal birth cohort study of American children in urban areas, run by Princeton University and Columbia University. It uses a stratified random sample technique and an oversample of non-marital births.〔Reichman, Nancy et al. (Fragile Families: Sample and Design ), Children and Youth Services Review 23(4): 303-326.〕 Baseline data collection ran from 1998–2000, with interviews with both biological parents shortly after the child’s birth. Follow-up interviews were conducted when the child was one, three, five, and nine years old, and fifteen year interviews began in February 2014.〔(Year 15 Survey Components )〕 In addition to parents, the last three waves have included in-home assessments, child care or teacher assessments, and interviews with the child. Core aims of the study are to learn about capabilities and relationships of unmarried parents as well as how families and children fare on various health and social measures over time. == Sampling == Children in the FFCWS were born in hospitals in 20 large cities across the United States. These cities were selected for diversity in child support enforcement, labor market conditions, and welfare generosity. Within each city, hospitals were sampled and births were sampled in each hospital. The study design called for an over-sample of births to unmarried couples. Thus, although non-marital births accounted for only a third of U.S. births at the time the study began, they make up around three-quarters of the Fragile Families sample. The FFCWS public data files include two sets of weights for each wave of data collection that can be used to make the sample representative of urban births nationwide. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Fragile Families and Child Wellbeing Study」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.