The definitive reference work on clinical trials, this book presents a wealth of detailed, practical information on the design, conduct, and analysis of both single center and multicenter trials. No other book on clinical trials offers as much detail as Meinert does on such issues as samplesize calculation, stratification and randomization, data systems design, consent form development, publication policies, preparation of funding requests, and reporting procedures.
The definitive reference work on clinical trials, this book presents a wealth of detailed, practical information on the design, conduct, and analysis of both single center and multicenter trials. No other book on clinical trials offers as much detail as Meinert does on such issues as samplesize calculation, stratification and randomization, data systems design, consent form development, publication policies, preparation of funding requests, and reporting procedures.
There is increasing evidence that the first few years after birth are particularly important in child development and present opportunities for enrichment but also vulnerabilities do to poverty and other social stressors. Elected officials have begun proposing potentially costly programs to intervene early in the lives of disadvantaged children. Have such interventions been demonstrated to yield substantial benefits? To what extent might they pay for themselves through lower welfare and criminal justice costs incurred by participating children as they grow into adults? This study synthesizes the results of a number of previous evaluations in an effort to answer those questions. Conclusions are that under carefully controlled conditions, early childhood interventions can yield substantial advantages to recipients in terms of emotional and cognitive development, education, economic well-being, and health. (The latter two benefits apply to the children's families as well.) If these interventions can be duplicated on a large scale, the costs of the programs could be exceeded by subsequent savings to the government. However, the more carefully the interventions are targeted to children most likely to benefit, the more likely it is that savings will exceed costs. Unfortunately, these conclusions rest on only a few methodologically sound studies. The authors argue for broader demonstrations accompanied by rigorous evaluations to resolve several important unknowns. These include the most efficient ways to design and target programs, the extent to which effectiveness is lost on scale-up, and the implications of welfare reform and other safety net changes.
NEW! Extensively updated content reflects the most current quantitative and qualitative approaches to nursing research, as well as the most current research tools and techniques used in the digital era. NEW! Updated research examples throughout incorporate the best examples of current literature, with increased emphasis on international examples to reflect the increasingly global nature of nursing research. NEW! Increased use of visuals includes the addition of more illustrations, tables, and boxes to help break up long passages of text for today’s more visually oriented learners of all levels. NEW! Revised chapters offer improved clarity and usability in the areas of research problems and purpose, quantitative research design, quantitative methodology, and qualitative methodology. NEW! Increased emphasis on hospital magnet status reflects the effect this status has on improving nursing competency and quality outcomes. UPDATED! Coverage of certain qualitative research content has been de-emphasized to reflect the decreased use of certain methodologies (e.g., historical research) and to allow the introduction of additional methodologies that are growing in use.
Part of the highly regarded Diagnostic Medical Sonography series, Susan Raatz Stephenson and Julia Dmitrieva’s Obstetrics and Gynecology, 5th Edition, thoroughly covers the core content students need to master in today’s rigorous sonography programs. Careful, collaborative editing ensures consistency across all three titles in this series: The Vascular System, Abdomen and Superficial Structures, and Obstetrics and Gynecology, providing the right content at the right level for both students and instructors.
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