一种分析抑郁症临床试验的新方法,基于个人对安慰剂反应的倾向,使用人工智能估计使用安慰剂
Roberto Gomeni1, Françoise Bressolle-Gomeni1, Maurizio Fava2
1Pharmacometrica, La Fouillade, France.
Psychiatry research
|August 6, 2023
概括
这项研究引入了人工智能 (AI) 来控制主要抑郁症 (MDD) 临床试验中的安慰剂反应. 使用AI加重倾向性得分显著增加了帕洛素疗效估计的治疗效果大小.
科学领域:
- 临床心理学 临床心理学
- 心理药理学 心理药理学
- 生物统计学 生物统计学
背景情况:
- 大型抑郁症 (MDD) 临床试验经常由于不可预测的安慰剂反应率而失败.
- 目前的随机化和统计方法对个体基线倾向于对安慰剂做出反应的控制不足.
- 这种基线倾向作为一个重要的非特异性预后和混因素.
研究的目的:
- 应用倾向性得分方法来缓解MDD试验中安慰剂反应倾向的基线不平衡.
- 用一种新的统计方法来评估帕洛克塞丁在MDD中的疗效.
主要方法:
- 人工智能 (AI) 模型使用前随机化数据估计了个体对安慰剂反应的倾向.
- 倾向性得分被用作混合效果模型中的权重来评估治疗效果.
- 对两项随机,安慰剂对照的帕洛克治疗MDD的试验数据进行了分析.
主要成果:
- 与传统分析相比,人工智能驱动的倾向性得分权重产生了显著更大的治疗效果和效果大小估计.
- 权衡分析显示,对帕洛克塞丁的疗效进行的评估更为严格.
- 该方法有效控制了混安慰剂效应的方法.
结论:
- 通过人工智能增强的倾向得分方法,提供了一种强大的方法来控制MDD试验中的安慰剂反应.
- 这种方法提高了治疗效果估计的准确性,可能减少试验失败.
- 人工智能支持的统计调整可以提高精神病学研究中临床试验结果的可靠性.
相关概念视频
01:54The Placebo Effect
6.2K
The placebo effect occurs when people's expectations or beliefs influence or determine their experience in a given situation. In other words, simply expecting something to happen can actually make it happen.
6.2K
01:11Blinding
2.5K
Blinding is a commonly used method of not telling participants which treatment a subject is receiving. Blinding is a critical part of a randomized control trial or RCT. It reduces the bias that affects the results. In an RCT, blinding is used in the form of a placebo. A placebo effect occurs when untreated subjects falsely believe they have received the treatment and report improved symptoms. A placebo or a dummy treatment is administered to subjects to negate the bias caused by such an effect.
2.5K
02:07Blind Procedures
10.7K
Ideally, the people who observe and record the children’s behavior are unaware of who was assigned to the experimental or control group, in order to control for experimenter bias. Experimenter bias refers to the possibility that a researcher’s expectations might skew the results of the study. Remember, conducting an experiment requires a lot of planning, and the people involved in the research project have a vested interest in supporting their hypotheses. If the observers knew which...
10.7K
01:23Antidepressant Drugs: MAOIs and Other Agents
274
Atypical antidepressants, including bupropion (Wellbutrin), mirtazapine (Remeron), nefazodone (Serzone), trazodone (Desyrel), and vilazodone (Viibryd), offer unique mechanisms of action. Bupropion weakly inhibits dopamine and norepinephrine reuptake, aiding depression treatment and smoking cessation, with a low risk of sexual dysfunction. Mirtazapine enhances serotonin and norepinephrine neurotransmission, leading to sedation, increased appetite, and weight gain. As a result, it helps treat...
274
01:16Clinical Trials
6.9K
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...
6.9K
01:52Regression Toward the Mean
6.3K
Regression toward the mean (“RTM”) is a phenomenon in which extremely high or low values—for example, and individual’s blood pressure at a particular moment—appear closer to a group’s average upon remeasuring. Although this statistical peculiarity is the result of random error and chance, it has been problematic across various medical, scientific, financial and psychological applications. In particular, RTM, if not taken into account, can interfere when...
6.3K