An exploration of the familial risk profiles of kindergarten students and later academic and behavior problems

"July 2011"The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file.Title from PDF of title page (University of Missouri--Columbia, viewed on May 17, 2012).Thesis advisors: Dr. Cheryl Offutt and Dr. Wendy ReinkeVita.Children who exhibit early behavioral and academic difficulties are at increased risk of later negative outcomes (see Patterson et al., 1989). Given the importance of families in the lives of young children, early intervention and prevention should incorporate a family-systems, life-course theoretical orientation. Although schools are an optimal place to provide such programming, an understanding of how to effectively identify the characteristics of at-risk families is needed. The purpose of this study was to understand how risk manifests within profiles of low-income, entering kindergarten students and is associated with later academic and behavioral outcomes. Participants included a sub-sample of kindergarten students within the Early Childhood Longitudinal Study-Kindergarten Cohort (ECLS-K). Latent profile analysis was conducted using five observed family risk factors and differences among third grade outcomes were compared using the Mplus Auxiliary function (Muthen & Muthen, 2007). Results indicated similar family profiles across racial groups involving mental health concerns, low educational involvement and high educational involvement, with negative discipline practices also being a risk factor within the African-American sample. Few differences were found among third grade outcomes; however, significant differences that were found support the concept of cumulative risk. Implications of these findings are discussed from the perspective of school-based professional practice.Includes bibliographical reference

Determination of Response Uncertainty Factor for Liquid Chromatography-Mass Spectrometry with Diode Array Detection (LC-DAD-MS) Using 34 Polymer Extractable Compounds

This technical note describes the determination of an uncertainty factor in LC-DAD-MS based on various compounds which are extractables from polymers/medical devices. Standards are injected at known concentrations, responses measured and a database is created which allows estimation of uncertainty based on the standard deviation of the dataset. An uncertainty factor of 2.4 was found for the dataset analyzed (using diode array detection). This uncertainty factor (rounded to 2) can be applied when screening for unknown material extractables compounds in order to estimate semi-quantitative amounts that are present without the analysis of an authentic reference standard for each species

Qualification of a Liquid Chromatography/Mass Spectrometry (LC/MS) Semi-quantitative Screening Method used for Analysis of Extractables and Leachables from Medical Devices, Medical Device Componentry and Other Associated Materials

This technical note summarizes the qualification of a LC-MS method qualification for use in general screening of extractables from medical devices

Qualification of an Inductively Coupled Plasma Mass Spectrometry (ICP-MS) Semi-quantitative Method used for Analysis of Extractables and Leachables from Medical Devices, Medical Device Componentry and Other Associated Materials

This technical note summarizes the qualification of a ICP-MS method for use in elemental extractables testing from medical devices and medical device componentry

Qualification of a Liquid Chromatography/Mass Spectrometry (LC/MS) Semi-quantitative Screening Method used for Analysis of Extractables and Leachables from Medical Devices, Medical Device Componentry and Other Associated Materials

This technical note summarizes the qualification of a LC-MS method qualification for use in general screening of extractables from medical devices.THIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV