Abstract：
:A response-adaptive randomization (RAR) design refers to the method in which the probability of treatment assignment changes according to how well the treatments are performing in the trial. Holding the promise of treating more patients with the better treatments, RARs have been successfully implemented in clinical trials. We compared equal randomization (ER) with three RARs: Bayesian adaptive randomization, sequential maximum likelihood, and sequential posterior mean. We fixed the total number of patients, considered as patient horizon, but varied the number of patients in the trial. Among the designs, we compared the proportion of patients assigned to the superior arm, overall response rate, statistical power, and total patients enrolled in the trial with and without adding an efficacy early stopping rule. Without early stopping, ER is preferred when the number of patients beyond the trial is much larger than the number of patients in the trial. RAR is favored for large treatment difference or when the number of patients beyond the trial is small. With early stopping, the difference between these two types of designs was reduced. By carefully choosing the design parameters, both RAR and ER methods can achieve the desirable statistical properties. Within three RAR methods, we recommend SPM considering the larger proportion in the better arm and higher overall response rate than BAR and similar power and trial size with ER. The ultimate choice of RAR or ER methods depends on the investigator's preference, the trade-off between group ethics and individual ethics, and logistic considerations in the trial conduct, etc.
journal_name
Contemp Clin Trialsjournal_title
Contemporary clinical trialsauthors
Du Y,Wang X,Jack Lee Jdoi
10.1016/j.cct.2014.11.006subject
Has Abstractpub_date
2015-01-01 00:00:00pages
15-25eissn
1551-7144issn
1559-2030pii
S1551-7144(14)00161-Xjournal_volume
40pub_type
杂志文章abstract：:The most relevant randomized controlled trials of interferon-alpha (IFN) for naive patients with chronic hepatitis C (CHC) published in a decade, just before appearance of pegylated IFN trials in 2000, were included in this paper. Its purpose is to review the relationship between sustained biochemical response in acti...
journal_title：Contemporary clinical trials
pub_type： 杂志文章,meta分析
doi：10.1016/j.cct.2004.12.009
更新日期：2005-04-01 00:00:00
abstract：BACKGROUND:The Covid-19 pandemic has caused fear and panic worldwide, forcing healthcare systems to disregard conventional practices and adopt innovation to contain the infection and death. Globally, there has been a rapid proliferation of research studies and clinical trials assessing risks, infectivity and treatment....
journal_title：Contemporary clinical trials
pub_type： 杂志文章,评审
doi：10.1016/j.cct.2020.106106
更新日期：2020-09-01 00:00:00
abstract：:Parents of young children with type 1 diabetes (T1D) experience unique, developmental challenges in managing their child's T1D, resulting in psychosocial distress. Only a small portion of young children reach glucose goals and adherence to diabetes devices that help improve T1D management have historically been low in...
journal_title：Contemporary clinical trials
pub_type： 杂志文章
doi：10.1016/j.cct.2019.05.008
更新日期：2019-07-01 00:00:00
abstract：BACKGROUND:Women have higher rates of depression and often experience depression symptoms during critical reproductive periods, including adolescence, pregnancy, postpartum, and menopause. Collaborative care intervention models for mood disorders in patients receiving care in an OB-GYN clinic setting have not been eval...
journal_title：Contemporary clinical trials
pub_type： 杂志文章,多中心研究,随机对照试验
doi：10.1016/j.cct.2013.08.001
更新日期：2013-11-01 00:00:00
abstract：PURPOSE:The aims of the study protocol are to investigate different adapted physical training programs in patients with advanced lung cancer undergoing palliative chemo- or radiotherapy and to evaluate their effects on physical performance, quality of life, symptom burden, and efficacy of oncologic treatment. METHODS:...
journal_title：Contemporary clinical trials
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.cct.2013.11.013
更新日期：2014-01-01 00:00:00
abstract：OBJECTIVES:Community Health Workers (CHWs) have been recommended to reduce diabetes disparities, but few robust trials of this approach have been conducted. Limitations of prior studies include: unspecified a priori outcomes; lack of blinded outcome assessments; high participant attrition rates; and lack of attention t...
journal_title：Contemporary clinical trials
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.cct.2011.10.013
更新日期：2012-03-01 00:00:00
abstract：BACKGROUND/AIMS:Cocaine use disorder (CUD) persists as a major public health problem in the United States. Response to evidence-based behavioral treatment has been shown to be predicted by dopaminergic dysfunction. Amphetamine formulations modulate dopaminergic systems and are one of the few agents with positive clinic...
journal_title：Contemporary clinical trials
pub_type： 杂志文章
doi：10.1016/j.cct.2020.106187
更新日期：2020-11-01 00:00:00
abstract：BACKGROUND:Evidence suggests that periodontitis is associated with prevalent and incident type 2 diabetes mellitus (T2DM), raising the question of whether periodontitis treatment may improve glycemic control in patients with T2DM. Meta-analyses of mostly small clinical trials suggest that periodontitis treatment result...
journal_title：Contemporary clinical trials
pub_type： 杂志文章,多中心研究,随机对照试验
doi：10.1016/j.cct.2013.09.010
更新日期：2013-11-01 00:00:00
abstract：BACKGROUND:Despite widespread use of learning collaboratives in health care, few randomized trials have evaluated their effectiveness. The primary aim of this cluster randomized implementation trial is to evaluate the effectiveness of a virtual learning collaborative (VLC) in the implementation of a lifestyle intervent...
journal_title：Contemporary clinical trials
pub_type： 杂志文章,多中心研究,随机对照试验
doi：10.1016/j.cct.2019.105816
更新日期：2019-09-01 00:00:00
abstract：BACKGROUND:Low back pain (LBP) is one of the most common reasons for seeking medical care. Manipulative therapies are a common treatment for LBP. Few studies have compared the effectiveness of different types of manipulative therapies. Moreover, the physiologic mechanisms underlying these treatments are not fully under...
journal_title：Contemporary clinical trials
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.cct.2018.05.012
更新日期：2018-07-01 00:00:00
abstract：OBJECTIVE:To explore a better administration way through comparison of the pharmacodynamics of cisatracurium administered by continuous infusion or intermittent bolus injection. METHODS:Thirty patients (ASAI-II) who had no neuromuscular disease and underwent selective surgery under general anesthesia were randomly div...
journal_title：Contemporary clinical trials
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.cct.2012.01.002
更新日期：2012-05-01 00:00:00
abstract：:Slow or insufficient enrollment in clinical research and a high demand for research participants raises questions about the need for and use of incentives to participate, including payment. Much of the available literature on payment to research participants focuses on ethical concerns, and rarely addresses guidelines...
journal_title：Contemporary clinical trials
pub_type： 杂志文章
doi：10.1016/j.cct.2012.05.001
更新日期：2012-09-01 00:00:00
abstract：UNLABELLED:Latinos bear a disproportionate burden of the dual pandemic of obesity and diabetes. However, successful interventions addressing this disparity through primary care are lacking. To address this gap, the 5-year Vida Sana (Healthy Life) study tests a culturally adapted and technology-enhanced group-based Diab...
journal_title：Contemporary clinical trials
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.cct.2016.03.003
更新日期：2016-05-01 00:00:00
abstract：BACKGROUND:There are numerous potential sources of problems when performing complex clinical research trials. These issues are compounded when studies are multi-site and multiple personnel from different sites are responsible for varying actions from case report form design to primary data collection and data entry. M...
journal_title：Contemporary clinical trials
pub_type： 杂志文章
doi：10.1016/j.cct.2005.11.013
更新日期：2006-04-01 00:00:00
abstract：:Caregivers for a family member with dementia experience chronic long-term stress that may benefit from new complementary therapies such as mindfulness-based stress reduction. Little is known however, about the challenges of recruiting and retaining family caregivers to research on mind-body based complementary therapi...
journal_title：Contemporary clinical trials
pub_type： 杂志文章
doi：10.1016/j.cct.2011.05.002
更新日期：2011-09-01 00:00:00
abstract：:Clinical trial is considered a breakthrough method in medicine and essential to the development of new drugs. Clinical trials that comply with international and national regulations require an appropriate infrastructure and team qualification. The goal of this study was to evaluate clinical trial groups in Brazil: pro...
journal_title：Contemporary clinical trials
pub_type： 杂志文章
doi：10.1016/j.cct.2010.06.002
更新日期：2010-09-01 00:00:00
abstract：BACKGROUND:Bipolar Disorder (BD) is a common and severe form of mental illness. Pharmacotherapy is the main treatment offered, but has limited effectiveness, and there is increasing evidence that people with BD respond well to psychological interventions. Inequalities in access to face-to-face psychological interventio...
journal_title：Contemporary clinical trials
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.cct.2012.02.011
更新日期：2012-07-01 00:00:00
abstract：:Research indicates that exercise is an efficacious intervention for depression among adults; however, little is known regarding its efficacy for preventing postpartum depression. The Healthy Mom study was a randomized controlled trial examining the efficacy of an exercise intervention for the prevention of postpartum ...
journal_title：Contemporary clinical trials
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.cct.2012.07.015
更新日期：2012-11-01 00:00:00
abstract：:This randomized, controlled trial tested the effectiveness of a nurse-run, telephone-based intervention to improve lipid control in patients with diabetes. Our patient population is predominantly low-income and Latino. Using our diabetes registry, we randomly assigned 381 patients to continue with their usual care and...
journal_title：Contemporary clinical trials
pub_type： 杂志文章
doi：10.1016/j.cct.2008.05.011
更新日期：2008-09-01 00:00:00
abstract：:Ethically sound clinical research requires that prospective study participants provide voluntary informed consent before any study procedures begin. The original intent was to provide the participant with clear, accurate information about study specifics (e.g., risks/benefits) to aid in the decision to participate. Br...
journal_title：Contemporary clinical trials
pub_type： 杂志文章
doi：10.1016/j.cct.2016.06.005
更新日期：2016-07-01 00:00:00
abstract：INTRODUCTION:Focal ablation therapy is playing an increasing role in oncology and may reduce the toxicity of current surgical treatments while achieving adequate oncological benefit. Irreversible electroporation (IRE) has been proposed to be tissue-selective with potential advantages compared with current thermal-ablat...
journal_title：Contemporary clinical trials
pub_type： 杂志文章
doi：10.1016/j.cct.2015.05.002
更新日期：2015-07-01 00:00:00
abstract：:We report here on the use of interactive telephone technology for collecting longitudinal data in a large randomized non-blinded parallel trial. Data were primarily collected via an automated interactive telephone system which enabled data to be downloaded by researchers periodically via a secure website. Alternative ...
journal_title：Contemporary clinical trials
pub_type： 杂志文章,多中心研究,随机对照试验
doi：10.1016/j.cct.2011.10.012
更新日期：2012-03-01 00:00:00
abstract：:Prostate cancer is a slow progressing cancer that affects millions of men in the US. Due to uncertainties in outcomes and treatment complications, it is important that patients engage in informed decision making to choose the "optimal treatment". Patient centered care that encompasses informed decision-making can impr...
journal_title：Contemporary clinical trials
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.cct.2015.09.024
更新日期：2015-11-01 00:00:00
abstract：INTRODUCTION:In promoting the health of chronically ill children, the hospital should help children cope both medically and psychosocially with their disease. The University Children's Hospital of Nancy proposes adapted physical activity for hospitalized children, but the practice during hospitalization is not well dev...
journal_title：Contemporary clinical trials
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.cct.2009.12.003
更新日期：2010-03-01 00:00:00
abstract：BACKGROUND:Despite evidence that palliative care increases quality and length of life, many patients and families remain uninformed about its nature and benefits. The purpose of this study is to test a psycho-educational intervention, Managing Cancer Care: A Personal Guide (MCC), intended to improve breast cancer patie...
journal_title：Contemporary clinical trials
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.cct.2016.04.009
更新日期：2016-05-01 00:00:00
abstract：BACKGROUND:Multiple sclerosis is a chronic progressive neurological disease. Evidence attests to the benefits of exercise, guidelines for exercise in multiple sclerosis are available. Remote-delivery of exercise adherence programmes based on the exercise guidelines require urgent testing. AIMS:The design, and outcomes...
journal_title：Contemporary clinical trials
pub_type： 杂志文章
doi：10.1016/j.cct.2021.106281
更新日期：2021-01-12 00:00:00
abstract：:Behavioral weight loss programs help people achieve clinically meaningful weight losses (8-10% of starting body weight). Despite data showing that only half of participants achieve this goal, a "one size fits all" approach is normative. This weight loss intervention science gap calls for adaptive interventions that pr...
journal_title：Contemporary clinical trials
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.cct.2016.01.011
更新日期：2016-03-01 00:00:00
abstract：BACKGROUND:Despite controversy about paying research subjects, little is known about actual practices in the U.S., including what type of studies offer payment, to what type of subjects, and how amounts are determined. OBJECTIVE:To document current U.S. practices regarding payment to research subjects. METHODS:The pr...
journal_title：Contemporary clinical trials
pub_type： 杂志文章
doi：10.1016/j.cct.2005.02.003
更新日期：2005-06-01 00:00:00
abstract：:It is of vital importance to the success of a randomized clinical trial to maintain the balance of baseline characteristics (covariates) that could potentially confound the outcomes of the trial. Various randomization methods have been proposed to increase the likelihood of having balanced covariates at the end of a t...
journal_title：Contemporary clinical trials
pub_type： 杂志文章
doi：10.1016/j.cct.2011.03.004
更新日期：2011-07-01 00:00:00
abstract：OBJECTIVE:To assess parental decision making and experiences in an autologous umbilical cord blood infusion study in young children with type 1 diabetes (T1D). METHODS:Surveys were completed with 22 parents of children with T1D who received infusion and 22 parents who declined infusion. RESULTS:Parents who stored umb...
journal_title：Contemporary clinical trials
pub_type： 杂志文章
doi：10.1016/j.cct.2011.04.004
更新日期：2011-07-01 00:00:00
