Abstract:
:The fraction of patients who respond to treatment and the duration of response in the subset of responding patients are commonly evaluated in oncology trials of cytotoxic compounds. While formal, comparative analysis of the fraction of patients responding to treatment is straightforward in a randomised trial, analyses that attempt to compare treatments in terms of the duration of response in responding patients are likely to be biased since the groups being compared are defined by the post-treatment outcome of response rather than by randomisation. Subsets of responding patients may not be comparable with respect to baseline prognostic factors and, consequently, formal comparative analysis is discouraged by the European Medicines Evaluation Agency. In an attempt to combine both the fraction of patients responding to treatment and the duration of response in responding patients, Temkin considered the probability of being in response function (PBRF) as a description of the treatment difference. Begg and Larson subsequently developed a parametric version of the PBRF under the exponential assumption. This paper briefly considers the PBRF as a means of estimating the expected duration of response across all randomised patients, thereby allowing a formal and unbiased comparison of treatments for duration of response. Building on earlier work, a more general and flexible approach to estimating the expected duration of response is offered to generalize beyond the exponential distribution.
journal_name
Contemp Clin Trialsjournal_title
Contemporary clinical trialsauthors
Ellis S,Carroll KJ,Pemberton Kdoi
10.1016/j.cct.2007.10.008subject
Has Abstractpub_date
2008-07-01 00:00:00pages
456-65issue
4eissn
1551-7144issn
1559-2030pii
S1551-7144(07)00162-0journal_volume
29pub_type
杂志文章abstract::Suicide remains the 10th leading cause of death among adults in the United States (U.S.). Annually, approximately 30 per 100,000 U.S. military Veterans commit suicide, compared to 14 per 100,000 U.S. civilians. Symptoms associated with suicidality can be treatment resistant and proven-effective pharmaceuticals may hav...
journal_title:Contemporary clinical trials
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.cct.2016.02.002
更新日期:2016-03-01 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::There are few effective obesity interventions directed towards younger children, particularly young minority children. This paper describes the design, intervention, recruitment methods, and baseline data of the ongoing Positive Lifestyles for Active Youngsters (Team PLAY) study. This randomized controlled trial is de...
journal_title:Contemporary clinical trials
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.cct.2012.02.003
更新日期:2012-05-01 00:00:00
abstract::This pilot study examined knowledge, understanding and perceived acceptability of key methodological concepts in clinical trials among injecting drug users (IDUs) in Sydney, Australia. Participants were clinical trial-experienced (n = 17) and trial-naïve (n = 99) IDUs recruited from community needle and syringe progra...
journal_title:Contemporary clinical trials
pub_type: 杂志文章
doi:10.1016/j.cct.2009.04.002
更新日期:2009-09-01 00:00:00
abstract:OBJECTIVE:Our goal is to test the efficacy of a family-based, multi-component intervention focused on infants of African-American (AA) mothers and families, a minority population at elevated risk for pediatric obesity, versus a child safety attention-control group to promote healthy weight gain patterns during the firs...
journal_title:Contemporary clinical trials
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.cct.2017.06.002
更新日期:2017-09-01 00:00:00
abstract:BACKGROUND:Functional dyspepsia (FD) is a common problem affecting up to 10-25% of individuals. FD accounts for significant health care costs and affects quality of life but has no definitive treatment. OBJECTIVES:The Functional Dyspepsia Treatment Trial (FDTT) aims to test whether treatment with an antidepressant (am...
journal_title:Contemporary clinical trials
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.cct.2012.02.002
更新日期:2012-05-01 00:00:00
abstract::Evaluation of time to event outcomes usually is examined by the Kaplan-Meier method and Cox proportional hazards models. We developed a modified statistical model based on histologic grade and other variables to describe the time-dependent outcome for autologous stem cell transplant (autotransplant) performed for non-...
journal_title:Contemporary clinical trials
pub_type: 杂志文章
doi:10.1016/j.cct.2007.07.005
更新日期:2008-03-01 00:00:00
abstract:BACKGROUND:Lower extremity peripheral arterial disease (PAD) is a public health problem and many patients with PAD experience claudication despite adequate medical and/or surgical management. Mobilization of endogenous progenitor cells using Granulocyte-Macrophage Colony Stimulating Factor (GM-CSF) is a novel therapeut...
journal_title:Contemporary clinical trials
pub_type: 杂志文章
doi:10.1016/j.cct.2020.105975
更新日期:2020-04-01 00:00:00
abstract:BACKGROUND:Despite efforts by the U.S. Department of Defense to train behavioral health (BH) providers in evidence-based psychotherapies (EBPs) for posttraumatic stress disorder (PTSD), numerous barriers limit EBP implementation. A context-tailored implementation approach called TACTICS (Targeted Assessment and Context...
journal_title:Contemporary clinical trials
pub_type: 杂志文章
doi:10.1016/j.cct.2020.106008
更新日期:2020-06-01 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:Medicaid recipients with serious mental illness die 25-30 years earlier than people in the general population due to health conditions that are modifiable through lifestyle changes. Cardiovascular diseases from excess weight, smoking, and sedentary lifestyle contribute substantially to this life expectancy d...
journal_title:Contemporary clinical trials
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.cct.2019.04.005
更新日期:2019-06-01 00:00:00
abstract:BACKGROUND:Basic research suggests that rapid increases in circulating inflammatory and hemostatic blood markers may trigger or indicate impending plaque rupture and coronary thrombosis, resulting in acute ischemic heart disease (IHD) events. However, these associations are not established in humans. METHODS AND RESUL...
journal_title:Contemporary clinical trials
pub_type: 杂志文章
doi:10.1016/j.cct.2014.03.009
更新日期:2014-05-01 00:00:00
abstract:INTRODUCTION:Cognitive impairment (CI) and cardiovascular disease (CVD) disproportionately affect women compared to men, and CVD increases risk of CI. Physical activity and cognitive training can improve cognition in older adults and may have additive or synergistic effects. However, no combined intervention has target...
journal_title:Contemporary clinical trials
pub_type: 杂志文章
doi:10.1016/j.cct.2020.106254
更新日期:2020-12-29 00:00:00
abstract::While investigators designing clinical trials face the important issue of endpoint selection, an equally troublesome concern can be the a priori selection of the endpoint analysis. In this latter circumstance, there may be only one endpoint of interest in the clinical trial, but several competing endpoint analyses are...
journal_title:Contemporary clinical trials
pub_type: 杂志文章
doi:10.1016/j.cct.2006.05.010
更新日期:2007-01-01 00:00:00
abstract:INTRODUCTION:In rural America cigarette smoking is prevalent, few cessation services are available, and healthcare providers lack the time and resources to help smokers quit. This paper describes the design and participant characteristics of Connect2Quit (C2Q), a randomized control trial (RCT) that tests the effectiven...
journal_title:Contemporary clinical trials
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.cct.2014.04.008
更新日期:2014-07-01 00:00:00
abstract:BACKGROUND:Atorvastatin and metformin are known energy restricting mimetic agents that act synergistically to produce molecular and metabolic changes in advanced prostate cancer (PCa). This trial seeks to determine whether these drugs favourably alter selected parameters in men with clinically-localized, aggressive PCa...
journal_title:Contemporary clinical trials
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.cct.2016.06.014
更新日期:2016-09-01 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: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::Double-blinding is an important and widely implemented feature of clinical trials although its success is rarely assessed. In a randomized, placebo-controlled trial of tea tree oil, an aromatic essential oil, for the treatment of recurrent herpes labialis (RHL), or cold sores, deception was used to prevent volunteers ...
journal_title:Contemporary clinical trials
pub_type: 杂志文章
doi:10.1016/j.cct.2007.04.006
更新日期:2008-01-01 00:00:00
abstract::Numerous studies have attempted to identify successful dietary strategies for weight loss, and many have focused on Low-Fat vs. Low-Carbohydrate comparisons. Despite relatively small between-group differences in weight loss found in most previous studies, researchers have consistently observed relatively large between...
journal_title:Contemporary clinical trials
pub_type: 杂志文章
doi:10.1016/j.cct.2016.12.021
更新日期:2017-02-01 00:00:00
abstract:BACKGROUND:Lifelong antiretroviral therapy (ART) (Option B+) is recommended for all HIV-infected pregnant/postpartum women, but high adherence is required to maximize HIV prevention potential and maintain maternal health. Mobile health (mHealth) interventions may provide treatment adherence support for women during, an...
journal_title:Contemporary clinical trials
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.cct.2017.03.007
更新日期:2017-06-01 00:00:00
abstract::Since its introduction in 1974 the use of the term Minimization has been broadened to include other algorithms. All algorithms use patient characteristics to determine the assignment that produces the best overall balance between treatment groups. They differ in whether or not they use all of the data from each previo...
journal_title:Contemporary clinical trials
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.cct.2009.12.005
更新日期:2010-03-01 00:00:00
abstract::Depression affects 20-30% of people living with HIV/AIDS (PLWHA) in the U.S. and predicts greater sexual risk behaviors, lower antiretroviral (ARV) medication adherence, and worse clinical outcomes. Yet little experimental evidence addresses the critical clinical question of whether depression treatment improves ARV a...
journal_title:Contemporary clinical trials
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.cct.2012.04.002
更新日期:2012-07-01 00:00:00
abstract::Competency-Based Approaches to Community Health (COACH) is a randomized controlled trial of a family-centered, community-based, and individually-tailored behavioral intervention for childhood obesity among Latino pre-school children. COACH focuses on improving personal agency for health behavior change by tailoring co...
journal_title:Contemporary clinical trials
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.cct.2018.08.006
更新日期:2018-10-01 00:00:00
abstract:BACKGROUND:Many studies on the health effects of the glycemic index (GI) are confounded by differences in the intakes of other macronutrients and fibre. Little data exist about the within- and between-subject variability of the GI. OBJECTIVE:Our objectives were therefore (i) to calculate the GI of eight commonly used ...
journal_title:Contemporary clinical trials
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.cct.2009.08.001
更新日期:2010-01-01 00:00:00
abstract::Osteoarthritis (OA) is the most common chronic condition and principal cause of disability among older adults. The current obesity epidemic has contributed to this high prevalence rate. Fortunately both OA symptoms and obesity can be ameliorated through lifestyle modifications. Physical activity (PA) combined with wei...
journal_title:Contemporary clinical trials
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.cct.2013.11.014
更新日期:2014-03-01 00:00:00
abstract:BACKGROUND:Extant obesity efforts have had a limited impact among low-income underserved children, in part because existing programs are limited in terms of their short duration and low dosage, limited accessibility and sustainability; and failure to address barriers faced by diverse low-income families. METHODS:This ...
journal_title:Contemporary clinical trials
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.cct.2018.12.010
更新日期:2019-02-01 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: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::Breast cancer is the most common invasive cancer among women in developed countries. Obesity is a major risk factor for breast cancer recurrence and mortality in both pre- and postmenopausal women. Co-morbid medical conditions are common among breast cancer survivors. The Exercise and Nutrition to Enhance Recovery and...
journal_title:Contemporary clinical trials
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.cct.2012.12.003
更新日期:2013-03-01 00:00:00