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对PSA查的随机试验
Priya Dave1, Sigrid V Carlsson2, Kara Watts1
1Department of Urology, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY.
Urologic oncology
|June 26, 2024
概括
前列腺特异性抗原 (PSA) 对前列腺癌的查显示出混合的结果. 虽然一些试验没有发现死亡率的好处,但ERSPC试验显示前列腺癌死亡率显著降低,突出了优化查策略的必要性.
科学领域:
- 泌尿器科 泌尿器科 泌尿器科 泌尿器科
- 在瘤学瘤学.
- 公共卫生 公共卫生
背景情况:
- 前列腺特异性抗原 (PSA) 测试在前列腺癌 (PCa) 查中的作用已经演变,随机对照试验 (RCT) 影响了指导方针.
- 目前围绕PSA查存在争议,原因是许多PCa病例的惰性和过度诊断和过度治疗的风险.
研究的目的:
- 审查评估PSA查的主要RCT,以告知临床实践.
- 分析PSA查对前列腺癌死亡率和发病率的影响.
主要方法:
- 主要RCT的总结结果:前列腺,肺,结肠直肠和卵巢 (PLCO) 癌症查试验,前列腺癌查的欧洲随机研究 (ERSPC) 和前列腺癌PSA测试的集群随机试验 (CAP).
- 评估PSA查对PCa死亡率和发病率的影响,并指出研究的局限性,如污染和低合规性.
主要成果:
- 在PLCO和CAP试验中,PCa死亡率没有显著差异.
- ERSPC试验报告9年PCa死亡率减少20%,转移性疾病减少.
- 在查组中,PLCO试验表明格里森6的检测增加,格里森8-10疾病的检测减少.
结论:
- 试验结果的差异归因于设计,污染,粘附和PSA值的变化.
- 需要进一步的研究来优化查间隔,针对高风险群体,并整合非侵入性工具以提高疗效和减少危害.
相关概念视频
01:13Randomized Experiments
The randomization process involves assigning study participants randomly to experimental or control groups based on their probability of being equally assigned. Randomization is meant to eliminate selection bias and balance known and unknown confounding factors so that the control group is similar to the treatment group as much as possible. A computer program and a random number generator can be used to assign participants to groups in a way that minimizes bias.
Simple randomization
Simple...
Simple randomization
Simple...
01:11Blinding
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.