概括
在孕妇中进行临床试验,特别是维生素D补充剂,存在挑战. 以参与者为中心的策略是改善坚持,减少偏见和提高试验结果有效性的关键.
科学领域:
- 产科和妇科 产科和妇科
- 临床试验方法论 临床试验方法论
- 营养科学 营养科学
背景情况:
- 与怀孕相关的健康问题需要临床试验,但在孕妇群体中进行临床试验具有挑战性.
- 低维他命症D在孕妇中普遍存在,特别是在中东和北非 (MENA) 地区.
- 补充维生素D是一种潜在的治疗策略,但其在怀孕中的有效性需要强大的临床试验数据.
研究的目的:
- 描述在黎巴嫩对孕妇服用维生素D补充剂的随机对照试验 (RCT) 的经验.
- 概述在试验实施过程中遇到的挑战以及用来克服这些挑战的策略.
- 详细说明用于确保试验内部和外部有效性的方法.
主要方法:
- 一个双盲随机受控试验 (RCT) 涉及黎巴嫩两个中心的孕妇.
- 对试验实施的描述性数据分析,包括招聘,坚持和学率.
- 提高外部有效性 (例如,多样化的招聘) 和内部有效性 (例如,随机化,标准化评估,偏见风险评估) 的策略.
主要成果:
- 60%的接受查的孕妇被录取,对干预的坚持率很高 (>90%).
- 主要挑战包括招聘困难 (35%下降) 和中心之间的脱学率差异 (12%与7%相比).
- 障碍还包括新生儿骨质扫描的低可接受性和胎儿测量的变化.
结论:
- 在怀孕期间的临床试验需要对文化敏感的招聘,强有力的医生参与和强大的参与者关系.
- 以参与者为中心的方法对于改善坚持,最大限度地减少偏见和加强内部和外部有效性至关重要.
- 有效的策略对于在孕妇人群中成功进行RCT至关重要,特别是关于维生素D补充剂.
相关概念视频
01:15Nursing Implementation
6.2K
Implementation is the execution of the nursing care plan developed during the planning phase.
The five steps to implementing effective nursing care include reassessing the patient, reviewing and revising the existing nursing care plan, organizing the resources and care delivery, anticipating and preventing complications, and implementing nursing interventions.
The five steps to implementing effective nursing care include reassessing the patient, reviewing and revising the existing nursing care plan, organizing the resources and care delivery, anticipating and preventing complications, and implementing nursing interventions.
6.2K
01:11Clinical Trials: Overview
5.0K
Clinical development focuses on how the drug will interact with the human body and encompasses four key phases of clinical trials, each serving a specific purpose in assessing the safety and effectiveness of new drugs. These phases overlap and build upon one another. Phase I involves a small group of healthy volunteers (typically 20-80 individuals) or, in cases where significant toxicity is expected, patients with the targeted disease, such as cancer or AIDS. The volunteers are tested for...
5.0K
01:12Trial and Error and Algorithm
424
A problem-solving strategy is a plan of action used to find a solution. Different strategies have distinct action plans. Trial and error involves trying different solutions until one works. For instance, to fix a broken printer, you might check ink levels, ensure the paper tray isn't jammed, and verify the printer's connection to your laptop. This method can be time-consuming but is commonly used. Thomas Edison, for example, used trial and error to find a suitable filament for the light...
424
01:16Clinical Trials
10.8K
Clinical trials are prospective experimental studies conducted on humans to determine the safety and efficacy of treatments, drugs, diet methods, and medical devices. Using statistics in clinical trials enables researchers to derive reasonable and accurate conclusions from the collected data, allowing them to make wise decisions in uncertain situations. In medical research, statistical methods are crucial for preventing errors and bias.
There are four phases in a clinical trial. A phase one...
There are four phases in a clinical trial. A phase one...
10.8K
01:04Random Error
9.8K
Random or indeterminate errors originate from various uncontrollable variables, such as variations in environmental conditions, instrument imperfections, or the inherent variability of the phenomena being measured. Usually, these errors cannot be predicted, estimated, or characterized because their direction and magnitude often vary in magnitude and direction even during consecutive measurements. As a result, they are difficult to eliminate. However, the aggregate effect of these errors can be...
9.8K
01:09Random Variables
17.9K
A random variable is a single numerical value that indicates the outcome of a procedure. The concept of random variables is fundamental to the probability theory and was introduced by a Russian mathematician, Pafnuty Chebyshev, in the mid-nineteenth century.
Uppercase letters such as X or Y denote a random variable. Lowercase letters like x or y denote the value of a random variable. If X is a random variable, then X is written in words, and x is given as a number.
For example, let X = the...
Uppercase letters such as X or Y denote a random variable. Lowercase letters like x or y denote the value of a random variable. If X is a random variable, then X is written in words, and x is given as a number.
For example, let X = the...
17.9K