stepped-wedge cluster randomized trial

  • 文章类型: Clinical Trial Protocol
    背景:神经系统疾病在全球疾病负担中占很大比例,而且比例越来越大。因此,加强神经护理管理很重要,特别是在农村地区。国际上认为,在农村地区的初级保健中使用远程神经学有可能增加获得保健服务的机会,并提高这些服务不足地区的护理质量。NeTKoH旨在解决德国农村地区在现实世界条件下对初级保健进行远程神经干预的影响的现有知识差距。
    方法:NeTKoH是一项集群随机对照试验,采用阶梯式楔形设计,涉及德国东北部农村地区的33个门诊全科医生(GP)办公室(集群)。在11个预定步骤中,所有的分组在从对照组到干预组之前都是随机分组的.目标样本量为1,089名持续招募的具有神经系统症状的患者。在干预臂中,远程神经咨询将通过与大学医院的神经专家面对面的视频会议系统提供。控制臂将接受常规护理。主要结果是在全科医生办公室解决的神经系统问题的比例。次要结果将包括住院时间和天数,直到神经科专家预约和诊断,患者的健康状况和生活质量,门诊和住院转诊。同时进行的观察性研究,连同一个过程,实施,和卫生经济评估,也将进行。
    结论:在现实生活中使用阶梯式楔形集群设计可以帮助应对物流挑战,并增强参与GP的动力,作为所有,在某个时候,将处于干预阶段。随着与外部有效性有关的额外实施评估,一项观察性研究,和健康经济评估,NeTKoH将能够为卫生政策决策者提供有关纳入标准护理的广泛评估。
    背景:德国临床试验注册(DRKS00024492)。注册日期:2021年9月28日。日期和协议版本:2023年6月,版本1。
    BACKGROUND: Neurological disorders account for a large and increasing proportion of the global burden of disease. Therefore, it is important to strengthen the management of neurologic care, particularly in rural areas. The use of tele-neurology in primary care in rural areas is internationally considered to have the potential to increase access to health care services and improve the quality of care in these underserved areas. NeTKoH aims to address the existing knowledge gap regarding the effects of a tele-neurologic intervention in primary care under real-world conditions in a rural area in Germany.
    METHODS: NeTKoH is a cluster-randomized controlled trial with a stepped-wedge design involving 33 outpatient general practitioner\'s (GP) offices (clusters) in a rural area in Northeast Germany. During 11 predetermined steps, all clusters are randomized before they cross over into groups from the control to the intervention arm. The targeted sample size is 1,089 patients with neurologic symptoms that are continuously being recruited. In the intervention arm, tele-neurologic consultations will be provided via a face-to-face video conferencing system with a neurologic expert at a university hospital. The control arm will receive usual care. The primary outcome is the proportion of neurologic problems being solved at the GP\'s office. Secondary outcomes will comprise hospital stays and days, time until neurologic specialist appointments and diagnostics, patients\' health status and quality of life, outpatient and inpatient referrals. A concurrent observational study, together with a process, implementation, and health economic evaluation, will also be conducted.
    CONCLUSIONS: Using a stepped-wedge cluster design in a real-life situation can help with logistic challenges and enhance the motivation of the participating GPs, as all, at some point, will be in the intervention phase. With the additional implementation evaluation pertaining to external validity, an observational study, and a health economic evaluation, NeTKoH will be able to provide an extensive evaluation for health policy decision-makers regarding the uptake into standard care.
    BACKGROUND: German Clinical Trials Register (DRKS00024492). Date registered: September 28, 2021. Date and protocol version: June 2023, version 1.
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  • 文章类型: Randomized Controlled Trial
    背景:关于姑息治疗模式减少积极临终关怀效果的临床试验证据尚无定论。我们先前报道了一种综合的住院姑息治疗和内科肿瘤学联合舍入模型,该模型显着减少了医院的病床天数,并假设对降低护理积极性有额外的影响。
    目的:比较联合舍入模型与常规护理在减少临终时接受积极治疗方面的效果。
    方法:对一项开放标签的阶梯式楔形整群随机试验进行二次分析,比较两种综合姑息治疗模式。共同的模型涉及将专科姑息治疗和肿瘤学合并到一个团队中,每天对入院问题进行审查。而常规治疗构成肿瘤学团队酌情推荐的专科姑息治疗。我们比较了在生命结束时接受积极护理的几率:生命最后30天内的急性医疗保健利用率,在医院死亡,以及两个试验组患者生命最后14天的癌症治疗。
    结果:2145例患者被纳入分析,到2021年4月4日,1803名患者死亡。合并治疗的中位总生存期为4.90(4.07-5.72)个月,常规治疗的中位总生存期为3.75(3.22-4.21)个月,生存率无差异(P=.12)。我们发现两种模型在临终时接受积极护理方面没有显着差异。(赔率.67-1.27;所有P>.05)。
    结论:住院患者环境中的共同舍入模型并没有降低生命末期护理的积极性。这可能部分是由于总体上专注于解决偶发录取问题。
    BACKGROUND: Clinical trial evidence on the effect of palliative care models in reducing aggressive end-of-life care is inconclusive. We previously reported on an integrated inpatient palliative care and medical oncology co-rounding model that significantly reduced hospital bed-days and postulate additional effect on reducing care aggressiveness.
    OBJECTIVE: To compare the effect of a co-rounding model vs usual care in reducing receipt of aggressive treatment at end-of-life.
    METHODS: Secondary analysis of an open-label stepped-wedge cluster-randomized trial comparing two integrated palliative care models within the inpatient oncology setting. The co-rounding model involved pooling specialist palliative care and oncology into one team with daily review of admission issues, while usual care constituted discretionary specialist palliative care referrals by the oncology team. We compared odds of receiving aggressive care at end-of-life: acute healthcare utilization in last 30 days of life, death in hospital, and cancer treatment in last 14 days of life between patients in two trial arms.
    RESULTS: 2145 patients were included in the analysis, and 1803 patients died by 4th April 2021. Median overall survival was 4.90 (4.07 - 5.72) months in co-rounding and 3.75 (3.22 - 4.21) months in usual care, with no difference in survival (P = .12). We found no significant differences between both models with respect to receipt of aggressive care at end-of-life. (Odds Ratio .67 - 1.27; all P > .05).
    CONCLUSIONS: The co-rounding model within an inpatient setting did not reduce aggressiveness of care at end-of-life. This could be due in part to the overall focus on resolving episodic admission issues.
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  • 文章类型: Randomized Controlled Trial
    目的:比较在风湿性和肌肉骨骼疾病患者中,结构化目标设定和量身定制的随访康复干预与现有康复的有效性。
    方法:一项实用的阶梯式楔形整群随机试验。
    方法:二级医疗保健的八个康复中心,挪威。
    方法:总共374名患有风湿性和肌肉骨骼疾病的成年人被纳入实验组(168)或对照组(206)。
    方法:一种新的康复干预措施,包括结构化的目标设定,行动计划,动机性面试,目标进度的数字自我监控,根据患者的需求和初级医疗保健的可用资源(桥梁干预),以及出院后的个人随访支持,与常规护理相比。
    方法:患者报告的结果在入院和康复出院时以电子方式收集,2、7和12个月后。主要结果是在7个月时通过患者特异性功能量表(0-10,10最佳)测量患者的目标达成情况。次要结果指标包括身体功能(30s站立测试),健康相关生活质量(EQ-5D-5L指数),和自我评估健康(EQ-VAS)。主要统计分析是使用线性混合模型在意向治疗的基础上进行的。
    结果:对于任一原发性患者均未发现BRIDGE干预措施的显着治疗效果(患者特定功能量表平均差异0.1[95%CI:-0.5,0.8],p=0.70),或次要结果7个月后康复。
    结论:对于风湿性疾病和肌肉骨骼疾病患者,桥梁干预并未显示出比现有康复更有效。仍然需要更多关于可以提高质量的因素的知识,连续性,以及康复对该患者组的长期健康影响。
    OBJECTIVE: To compare the effectiveness of a structured goal-setting and tailored follow-up rehabilitation intervention with existing rehabilitation in patients with rheumatic and musculoskeletal diseases.
    METHODS: A pragmatic stepped-wedge cluster randomized trial.
    METHODS: Eight rehabilitation centers in secondary healthcare, Norway.
    METHODS: A total of 374 adults with rheumatic and musculoskeletal diseases were included in either the experimental (168) or the control group (206).
    METHODS: A new rehabilitation intervention which comprised structured goal setting, action planning, motivational interviewing, digital self-monitoring of goal progress, and individual follow-up support after discharge according to patients\' needs and available resources in primary healthcare (the BRIDGE-intervention), was compared to usual care.
    METHODS: Patient-reported outcomes were collected electronically on admission and discharge from rehabilitation, and after 2, 7, and 12 months. The primary outcome was patients\' goal attainment measured by the Patient Specific Functional Scale (0-10, 10 best) at 7 months. Secondary outcome measures included physical function (30-s Sit-To-Stand test), health-related quality of life (EQ-5D-5L-index), and self-assessed health (EQ-VAS). The main statistical analyses were performed on an intention-to-treat basis using linear mixed models.
    RESULTS: No significant treatment effects of the BRIDGE-intervention were found for either primary (Patient Specific Functional Scale mean difference 0.1 [95% CI: -0.5, 0.8], p = 0.70), or secondary outcomes 7 months after rehabilitation.
    CONCLUSIONS: The BRIDGE-intervention was not shown to be more effective than existing rehabilitation for patients with rheumatic and musculoskeletal diseases. There is still a need for more knowledge about factors that can improve the quality, continuity, and long-term health effects of rehabilitation for this patient group.
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  • 文章类型: Journal Article
    目的:探讨最近的阶梯式楔形整群随机试验(SW-CRT)在招募和干预实施方面的挑战。
    方法:我们搜索了PubMed以确定SW-CRT(2019-2020)的主要报告。两名审稿人独立筛选研究,并从每份报告中提取数据。征聘挑战被定义为未实现的计划分组或参与者数量,或报告为解决征聘困难而对设计进行的任何更改。早期定义了实施挑战,迟到,或者不在至少一个集群中实施干预。
    结果:在55个SW-CRT中,18人(33%)面临招聘挑战,23(42%)没有,对于14(26%),无法判断。至少有24个实施挑战(44%),八个(15%)没有,对于23(42%),无法判断。在35项(64%)面临招聘或实施挑战的试验中,18(72%)对其设计进行了一次或多次修改,最常见的是修改试验持续时间。
    结论:研究人员在考虑使用SW-CRT设计时,必须意识到招募或实施挑战的风险。在计划试验时,应采取缓解策略。需要对计划和实际设计特征进行更透明的报告。
    OBJECTIVE: To explore challenges in recruitment and intervention implementation in recent stepped-wedge cluster randomized trials (SW-CRTs).
    METHODS: We searched PubMed to identify primary reports of SW-CRTs (2019-2020). Two reviewers independently screened studies and extracted data from each report. A recruitment challenge was defined as a planned number of clusters or participants not achieved or any reported changes made to the design to address recruitment difficulties. An implementation challenge was defined as early, late, or no implementation of the intervention in at least one cluster.
    RESULTS: Of 55 SW-CRTs, 18 (33%) had a recruitment challenge, 23 (42%) had none, and for 14 (26%) it was impossible to judge. At least one implementation challenge was present in 24 (44%), eight (15%) had none, and for 23 (42%) it was impossible to judge. Of the 35 (64%) trials with recruitment or implementation challenges, 18 (72%) had one or more modifications of their design, most often a modification of the trial duration.
    CONCLUSIONS: Investigators must be aware of the risks of recruitment or implementation challenges when considering the use of an SW-CRT design. Mitigating strategies should be adopted when planning the trial. More transparent reporting of planned and actual design features is required.
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  • 文章类型: Clinical Trial Protocol
    BACKGROUND: Nowadays, the main challenge of transplantation is the improvement of long-term care, aiming at reducing treatment-related complications and at decreasing rejection rates. Patients\' adherence to both treatment and hygienic-dietary measures is mandatory to achieve these objectives. Adherence to immunosuppressive drugs is estimated to be only 70%. We hypothesized that the implementation of a personalized pharmaceutical plan (PPP) would increase adherence and therefore graft survival.
    METHODS: This study is a stepped-wedge cluster randomized trial with transplantation units defining clusters. Twelve clusters from 10 university hospitals were recruited. All centres started on the same day in the control phase. Every 7 weeks, one centre will switch to the intervention phase and remain there until the end of inclusions. We plan to recruit 1716 kidney and/or liver transplant patients. The intervention phase consists in setting up the PPP: development of the patient\'s hospital and community pharmaceutical follow-up. In the hospital, the pharmacist will carry out drug reconciliation upon admission, daily pharmaceutical follow-up of prescriptions and pharmaceutical interviews with the patient in order to explain the modalities of taking immunosuppressive drugs and hygienic-dietary measures. After hospitalization, during the post-transplantation year, pharmaceutical meetings will take place, prior to medical consultations in order to check the patient\'s understanding of the prescription, his adherence, to remind them of hygienic-dietary measures and to look for adverse effects. The hospital pharmacist will also be in charge of establishing a close link with the community pharmacist (CP) and general practitioner, especially providing discharge medication reconciliation, an e-learning and a checklist. Moreover, prior to each pharmaceutical consultation, the hospital pharmacist will contact the CP to discuss patient adherence. The primary outcome is adherence to immunosuppressive treatments 1 year post-transplantation assessed by using the BAASIS questionnaire and the health insurance data from the national health data system. A medico-economic study will measure the efficiency of this plan.
    CONCLUSIONS: GRePH aims to increase adherence of liver and/or kidney transplant patients to their immunosuppressive therapies in order to reduce transplant rejections. To this end, a new clinical pharmacy model, the PPP, will be set up in 10 university hospitals.
    BACKGROUND: ClinicalTrials.gov NCT04295928 . Registered on 5 March 2020.
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  • 文章类型: Journal Article
    Power calculation for stepped-wedge cluster randomized trials (SW-CRTs) presents unique challenges, beyond those of standard parallel cluster randomized trials, due to the need to consider temporal within cluster correlations and background period effects. To date, power calculation methods specific to SW-CRTs have primarily been developed under a linear model. When the outcome is binary, the use of a linear model corresponds to assessing a prevalence difference; yet trial analysis often employs a nonlinear link function. We propose power calculation methods for cross-sectional SW-CRTs under a logistic model fitted by generalized estimating equations. Firstly, under an exchangeable correlation structure, we show the power based on a logistic model is lower than that from assuming a linear model in the absence of period effects. We then evaluate the impact of background prevalence changes over time on power. To allow the correlation among outcomes in the same cluster to change over time and with treatment status, we generalize the methods to more complex correlation structures. Our simulation studies demonstrate that the proposed power calculation methods perform well with the model-based variance under the true correlation structure and reveal that a working independence structure can result in substantial efficiency loss, while a working exchangeable structure performs well even when the underlying correlation structure deviates from exchangeable. An extension to our methods accounts for variable cluster sizes and reveals that unequal cluster sizes have a modest impact on power. We illustrate the approaches by application to a quality of care improvement trial for acute coronary syndrome.
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  • 文章类型: Clinical Trial Protocol
    BACKGROUND: Costs of care are important to patients making cancer treatment decisions, but clinicians often do not feel prepared to discuss treatment costs. We aim to (1) assess the impact of a conversation-based decision aid (Option Grid) containing cost information about slow-growing prostate cancer management options, combined with urologic surgeon training, on the frequency and quality of patient-urologic surgeon cost conversations, and (2) examine the impact of the decision aid and surgeon training on decision quality.
    METHODS: We will conduct a stepped-wedge cluster randomized trial in outpatient urology practices affiliated with a large academic medical center in the USA. We will randomize five urologic surgeons to four intervention sequences and enroll their patients with a first-time diagnosis of slow-growing prostate cancer independently at each period. Primary outcomes include frequency of cost conversations, initiator of cost conversations, and whether or not a referral is made to address costs. These outcomes will be collected by patient report (post-visit survey) and by observation (audio-recorded clinic visits) with consent. Other outcomes include the following: patient-reported decisional conflict post-visit and at 3-month follow-up, decision regret at 3-month follow-up, shared decision-making post-visit, communication post-visit, and financial toxicity post-visit and at 3-month follow-up; clinician-reported attitudes about shared decision-making before and after the study, and feasibility of sustained intervention use. We will use hierarchical regression analysis to assess patient-level outcomes, including urologic surgeon as a random effect to account for clustering of patient participants.
    CONCLUSIONS: This study evaluates a two-part intervention to improve cost discussions between urologic surgeons and patients when deciding how to manage slow-growing prostate cancer. Establishing the effectiveness of the strategy under study will allow for its replication in other clinical decision contexts.
    BACKGROUND: ClinicalTrials.gov NCT04397016 . Registered on 21 May 2020.
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  • 文章类型: Clinical Trial Protocol
    To test the effectiveness of a comprehensive team-based intervention to improve human papillomavirus (HPV) vaccination completion rates and reduce missed opportunities to vaccinate in rural Oregon.
    Stepped-wedge cluster randomized trial.
    Forty family physicians and pediatricians who are members of the Oregon Rural Practice-based Research Network.
    Tailored to individual practice needs, components will include (1) practice facilitation with clinicians, nurses, front office staff, and others who have patient contact to redesign patient care and communication strategies to optimize HPV vaccine series completion; (2) workflow mapping adapted to practice context to support HPV vaccine delivery; (3) a practice improvement model designed to firmly establish reminder and recall systems and then standing orders; (4) education for patients and parents that underscores HPV vaccination is safe, effective, and an important approach for reducing cancer risk; and (5) partnering with community organizations to plan and implement a social marketing campaign on HPV vaccination.
    Initiation and completion of the HPV vaccine series as well as reduction in rates of missed opportunities to vaccinate derived from Oregon Immunization Program data.
    ClinicalTrials.govPRS, NCT03604393 : .Trial was registered on July 11, 2018. The first participant was enrolled on September 11, 2018.
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  • 文章类型: Journal Article
    阶梯楔形集群随机试验(SW-CRT)的报告试验合并标准扩展是最近发布的SW-CRT报告指南。我们评估了最近的SW-CRT样本的报告质量。
    报告质量根据新指南中的26个项目进行评估,使用一种独立且一式两份的新型众包方法。随机分配,50名审稿人我们评估了质量评估的可靠性,提出这是一种评估报告指南中项目稳健性的新方法。
    有几个项目得到了很好的报道。有些项目报道得很差,包括对SW-CRT有独特要求的几个项目,例如使用设计的理由,设计的描述,识别和招募集群内的参与者,和隐藏集群分配(超过50%的报告中未报告)。项目间的协议是中等的(协议的中位数百分比为76%[IQR64至86])。例如,包括试验设计的描述以及为什么试验结束或停止的几个项目的一致性很低。
    报告SW-CRT时,作者应特别注意确保明确报告设计的确切格式和理由,以及如何确定集群和个体以纳入研究,以及这是在聚类随机化之前还是之后完成的,这对于偏见风险评估至关重要。一些项目,包括审判结束的原因,可能与SW-CRT无关,或者在声明中描述不清楚。
    The Consolidated Standards of Reporting Trials extension for the stepped-wedge cluster randomized trial (SW-CRT) is a recently published reporting guideline for SW-CRTs. We assess the quality of reporting of a recent sample of SW-CRTs.
    Quality of reporting was asssessed according to the 26 items in the new guideline using a novel crowd sourcing methodology conducted independently and in duplicate, with random assignment, by 50 reviewers. We assessed reliability of the quality assessments, proposing this as a novel way to assess robustness of items in reporting guidelines.
    Several items were well reported. Some items were very poorly reported, including several items that have unique requirements for the SW-CRT, such as the rationale for use of the design, description of the design, identification and recruitment of participants within clusters, and concealment of cluster allocation (not reported in more than 50% of the reports). Agreement across items was moderate (median percentage agreement was 76% [IQR 64 to 86]). Agreement was low for several items including the description of the trial design and why trial ended or stopped for example.
    When reporting SW-CRTs, authors should pay particular attention to ensure clear reporting on the exact format of the design with justification, as well as how clusters and individuals were identified for inclusion in the study, and whether this was done before or after randomization of the clusters, which are crucial for risk of bias assessments. Some items, including why the trial ended, might either not be relevant to SW-CRTs or might be unclearly described in the statement.
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  • 文章类型: Journal Article
    To determine how often stepped-wedge cluster randomized controlled trials reach their planned sample size, and what reasons are reported for choosing a stepped-wedge trial design.
    We conducted a PubMed literature search (period 2012 to 2017) and included articles describing the results of a stepped-wedge cluster randomized trial. We calculated the percentage of studies reaching their prespecified number of participants and clusters, and we summarized the reasons for choosing the stepped-wedge trial design as well as difficulties during enrollment.
    Forty-six individual stepped-wedge studies from a total of 53 articles were included in our review. Of the 35 studies, for which recruitment rate could be calculated, 69% recruited their planned number of participants, with 80% having recruited the planned number of clusters. Ethical reasons were the most common motivation for choosing the stepped-wedge trial design. Most important difficulties during study conduct were dropout of clusters and delayed implementation of the intervention.
    About half of recently published stepped-wedge trials reached their planned sample size indicating that recruitment is also a major problem in these trials. Still, the stepped-wedge trial design can yield practical, ethical, and methodological advantages.
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