Download or read book The Prevention and Treatment of Missing Data in Clinical Trials written by National Research Council and published by National Academies Press. This book was released on 2010-12-21 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: Randomized clinical trials are the primary tool for evaluating new medical interventions. Randomization provides for a fair comparison between treatment and control groups, balancing out, on average, distributions of known and unknown factors among the participants. Unfortunately, these studies often lack a substantial percentage of data. This missing data reduces the benefit provided by the randomization and introduces potential biases in the comparison of the treatment groups. Missing data can arise for a variety of reasons, including the inability or unwillingness of participants to meet appointments for evaluation. And in some studies, some or all of data collection ceases when participants discontinue study treatment. Existing guidelines for the design and conduct of clinical trials, and the analysis of the resulting data, provide only limited advice on how to handle missing data. Thus, approaches to the analysis of data with an appreciable amount of missing values tend to be ad hoc and variable. The Prevention and Treatment of Missing Data in Clinical Trials concludes that a more principled approach to design and analysis in the presence of missing data is both needed and possible. Such an approach needs to focus on two critical elements: (1) careful design and conduct to limit the amount and impact of missing data and (2) analysis that makes full use of information on all randomized participants and is based on careful attention to the assumptions about the nature of the missing data underlying estimates of treatment effects. In addition to the highest priority recommendations, the book offers more detailed recommendations on the conduct of clinical trials and techniques for analysis of trial data.
Download or read book Dropout Study Followup written by Fresno County Study Committee and published by . This book was released on 1966 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dropout Study Followup written by George L. McIntyre and published by . This book was released on 1971 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dropout Study Followup 1968 69 written by Ernest A. Poore and published by . This book was released on 1970 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High School Dropout Graduation and Completion Rates written by National Academy of Education and published by National Academies Press. This book was released on 2011-04-17 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: High school graduation and dropout rates have long been used as indicators of educational system productivity and effectiveness and of social and economic well being. While determining these rates may seem like a straightforward task, their calculation is in fact quite complicated. How does one count a student who leaves a regular high school but later completes a GED? How does one count a student who spends most of his/her high school years at one school and then transfers to another? If the student graduates, which school should receive credit? If the student drops out, which school should take responsibility? High School Dropout, Graduation, and Completion Rates addresses these issues and to examine (1) the strengths, limitations, accuracy, and utility of the available dropout and completion measures; (2) the state of the art with respect to longitudinal data systems; and (3) ways that dropout and completion rates can be used to improve policy and practice.
Download or read book Dropout Rates in the United States written by and published by . This book was released on 1989 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Rural School Dropout written by E. Grant Youmans and published by . This book was released on 1963 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High School Dropouts who Change Their Minds about School written by Andrew J. Kolstad and published by . This book was released on 1986 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: The objective of this study is to describe, using national survey data, how many dropouts attempt to change the course of their lives by returning to complete their diploma requirements, what kinds of dropouts return and complete their requirements, and how the subsequent activities of those dropouts who returned to complete the diploma requirements differ from those of dropouts who remained out of school. This paper reports new findings from a recent follow-up survey of high school sophomores which indicate that a substantial proportion of high school dropouts return to complete their diploma requirements.
Download or read book A Follow up Study of Drop outs of Many High School from 1945 1952 written by L. Bernice Skinner and published by . This book was released on 1954 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 1969 Follow up Study of Dropouts and Graduates of 1962 63 and 1964 65 written by East Side Union High School District, San Jose, California and published by . This book was released on 1969 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Follow Up Study on High School Dropouts written by Virgil Murk and published by . This book was released on 1959 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Follow up Study of the Drop outs from Ogden High School and Their Later life Adjustments written by Paul A. Martin and published by . This book was released on 1950 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dropping Out written by Russell W. Rumberger and published by Harvard University Press. This book was released on 2011-10-15 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: The vast majority of kids in the developed world finish high school—but not in the United States. More than a million kids drop out every year, around 7,000 a day, and the numbers are rising. Dropping Out offers a comprehensive overview by one of the country’s leading experts, and provides answers to fundamental questions: Who drops out, and why? What happens to them when they do? How can we prevent at-risk kids from short-circuiting their futures? Students start disengaging long before they get to high school, and the consequences are severe—not just for individuals but for the larger society and economy. Dropouts never catch up with high school graduates on any measure. They are less likely to find work at all, and more likely to live in poverty, commit crimes, and suffer health problems. Even life expectancy for dropouts is shorter by seven years than for those who earn a diploma. Russell Rumberger advocates targeting the most vulnerable students as far back as the early elementary grades. And he levels sharp criticism at the conventional definition of success as readiness for college. He argues that high schools must offer all students what they need to succeed in the workplace and independent adult life. A more flexible and practical definition of achievement—one in which a high school education does not simply qualify you for more school—can make school make sense to young people. And maybe keep them there.
Download or read book A Follow up Study of Drop outs from Helix High School written by John Thomas Warburton and published by . This book was released on 1952 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book First Follow up written by and published by . This book was released on 1992 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Rural School Dropout written by Elmer Grant Youmans and published by . This book was released on 1963 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:
