نتایج جستجو برای: attrition

تعداد نتایج: 6264  

Journal: :Military medicine 2006
Lex L Merrill Valerie A Stander Cynthia J Thomsen Julie L Crouch Joel S Milner

A prospective study of U.S. Navy recruits (N = 5,498) examined whether premilitary intimate partner violence (IPV) was associated with attrition. Overall, more than one-fourth of recruits reported premilitary physical IPV and more than two-thirds reported premilitary verbal IPV. Women reported more perpetration and receipt of IPV than men, and married or cohabiting respondents reported more IPV...

Journal: :Annual review of psychology 2009
John W Graham

This review presents a practical summary of the missing data literature, including a sketch of missing data theory and descriptions of normal-model multiple imputation (MI) and maximum likelihood methods. Practical missing data analysis issues are discussed, most notably the inclusion of auxiliary variables for improving power and reducing bias. Solutions are given for missing data challenges s...

Journal: :Statistics in medicine 2015
Qixuan Chen Andrew Gelman Melissa Tracy Fran H Norris Sandro Galea

We review weighting adjustment methods for panel attrition and suggest approaches for incorporating design variables, such as strata, clusters, and baseline sample weights. Design information can typically be included in attrition analysis using multilevel models or decision tree methods such as the chi-square automatic interaction detection algorithm. We use simulation to show that these weigh...

Journal: :Journal of child language 2015
Cristina Flores

This paper is based upon a longitudinal study of L2 attrition in a bilingual child who grew up in an L2 migration background (Germany) and moved to the country of origin (Portugal) at the age of nine, experiencing a dominance shift from the L2 to the L1. The study aims to analyze the effects of language loss in L2 German. Data collection started 3 weeks after the child's immersion in the Portug...

2018
Mulatu Biru Inger Hallström Pia Lundqvist Degu Jerene

INTRODUCTION Attrition from antiretroviral therapy (ART) programmes is a critical challenge among children receiving care in resource-limited settings. Our objective was to determine the rates and predictors of attrition among children on ART in Ethiopia. METHODS Between December 2014 and September 2016, we conducted a prospective cohort study in eight health facilities in Ethiopia. Eligibili...

1997
Suzanne G. Brainard Linda Carlin

With a six-year grant from the Alfred P. Sloan Foundation, the Women in Engineering (WIE) Initiative at the University of Washington is conducting a longitudinal study of undergraduate women pursuing degrees in science or engineering. Now in its sixth year, five of six cohorts of approximately 100 students each year have been added to the study. The objectives of this study are to: (a) determin...

1999
Regina T. Riphahn

Immigrant Participation in Social Assistance Programs* The share of foreigners in the German social assistance program exceeds their population share and continues to grow. This study tests whether higher foreigner welfare dependence is due to foreign-native differences in behavior as opposed to exogenous characteristics. The determinants of welfare dependence are analyzed using data from the G...

2001
Juan Dubra Pierre Benoit Jean-Pierre Benoit

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