Phase 1 Program Joint Report


Book Description

Each of the Phase 1 Program Joint Working Groups describes the organizational structure and work processes that they used during the program, joint accomplishments, lessons learned, and applications to the International Space Station Program.




The Prevention and Treatment of Missing Data in Clinical Trials


Book Description

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.




Evaluation of the Congressionally Directed Medical Research Programs Review Process


Book Description

The medical research landscape in the United States is supported by a variety of organizations that spend billions of dollars in government and private funds each year to seek answers to complex medical and public health problems. The largest government funder is the National Institutes of Health (NIH), followed by the Department of Defense (DoD). Almost half of DoD's medical research funding is administered by the Congressionally Directed Medical Research Programs (CDMRP). The mission of CDMRP is to foster innovative approaches to medical research in response to the needs of its stakeholdersâ€"the U.S. military, their families, the American public, and Congress. CDMRP funds medical research to be performed by other government and nongovernmental organizations, but it does not conduct research itself. The major focus of CDMRP funded research is the improved prevention, diagnosis, and treatment of diseases, injuries, or conditions that affect service members and their families, and the general public. The hallmarks of CDMRP include reviewing applications for research funding using a two-tiered review process, and involving consumers throughout the process. Evaluation of the Congressionally Directed Medical Research Programs Review Process evaluates the CDMRP two-tiered peer review process, its coordination of research priorities with NIH and the Department of Veterans Affairs, and provides recommendations on how the process for reviewing and selecting studies can be improved.




Sharing Clinical Trial Data


Book Description

Data sharing can accelerate new discoveries by avoiding duplicative trials, stimulating new ideas for research, and enabling the maximal scientific knowledge and benefits to be gained from the efforts of clinical trial participants and investigators. At the same time, sharing clinical trial data presents risks, burdens, and challenges. These include the need to protect the privacy and honor the consent of clinical trial participants; safeguard the legitimate economic interests of sponsors; and guard against invalid secondary analyses, which could undermine trust in clinical trials or otherwise harm public health. Sharing Clinical Trial Data presents activities and strategies for the responsible sharing of clinical trial data. With the goal of increasing scientific knowledge to lead to better therapies for patients, this book identifies guiding principles and makes recommendations to maximize the benefits and minimize risks. This report offers guidance on the types of clinical trial data available at different points in the process, the points in the process at which each type of data should be shared, methods for sharing data, what groups should have access to data, and future knowledge and infrastructure needs. Responsible sharing of clinical trial data will allow other investigators to replicate published findings and carry out additional analyses, strengthen the evidence base for regulatory and clinical decisions, and increase the scientific knowledge gained from investments by the funders of clinical trials. The recommendations of Sharing Clinical Trial Data will be useful both now and well into the future as improved sharing of data leads to a stronger evidence base for treatment. This book will be of interest to stakeholders across the spectrum of research-from funders, to researchers, to journals, to physicians, and ultimately, to patients.




Clinical Trials in Oncology, Third Edition


Book Description

The third edition of the bestselling Clinical Trials in Oncology provides a concise, nontechnical, and thoroughly up-to-date review of methods and issues related to cancer clinical trials. The authors emphasize the importance of proper study design, analysis, and data management and identify the pitfalls inherent in these processes. In addition, the book has been restructured to have separate chapters and expanded discussions on general clinical trials issues, and issues specific to Phases I, II, and III. New sections cover innovations in Phase I designs, randomized Phase II designs, and overcoming the challenges of array data. Although this book focuses on cancer trials, the same issues and concepts are important in any clinical setting. As always, the authors use clear, lucid prose and a multitude of real-world examples to convey the principles of successful trials without the need for a strong statistics or mathematics background. Armed with Clinical Trials in Oncology, Third Edition, clinicians and statisticians can avoid the many hazards that can jeopardize the success of a trial.







ERDA Energy Research Abstracts


Book Description




The Nuclear Borderlands


Book Description

An important investigation of the sociocultural fallout of America's work on the atomic bomb In The Nuclear Borderlands, Joseph Masco offers an in-depth look at the long-term consequences of the Manhattan Project. Masco examines how diverse groups in and around Los Alamos, New Mexico understood and responded to the U.S. nuclear weapons project in the post–Cold War period. He shows that the American focus on potential nuclear apocalypse during the Cold War obscured the broader effects of the nuclear complex on society, and that the atomic bomb produced a new cognitive orientation toward daily life, reconfiguring concepts of time, nature, race, and citizenship. This updated edition includes a brand-new preface by the author discussing current developments in nuclear politics and the scientific impact of the nuclear age on the present epoch of a human-altered climate.




Research in Education


Book Description




Small Clinical Trials


Book Description

Clinical trials are used to elucidate the most appropriate preventive, diagnostic, or treatment options for individuals with a given medical condition. Perhaps the most essential feature of a clinical trial is that it aims to use results based on a limited sample of research participants to see if the intervention is safe and effective or if it is comparable to a comparison treatment. Sample size is a crucial component of any clinical trial. A trial with a small number of research participants is more prone to variability and carries a considerable risk of failing to demonstrate the effectiveness of a given intervention when one really is present. This may occur in phase I (safety and pharmacologic profiles), II (pilot efficacy evaluation), and III (extensive assessment of safety and efficacy) trials. Although phase I and II studies may have smaller sample sizes, they usually have adequate statistical power, which is the committee's definition of a "large" trial. Sometimes a trial with eight participants may have adequate statistical power, statistical power being the probability of rejecting the null hypothesis when the hypothesis is false. Small Clinical Trials assesses the current methodologies and the appropriate situations for the conduct of clinical trials with small sample sizes. This report assesses the published literature on various strategies such as (1) meta-analysis to combine disparate information from several studies including Bayesian techniques as in the confidence profile method and (2) other alternatives such as assessing therapeutic results in a single treated population (e.g., astronauts) by sequentially measuring whether the intervention is falling above or below a preestablished probability outcome range and meeting predesigned specifications as opposed to incremental improvement.