Marchand R
Unité de médecine familiale, Centre Hospitalier de Verdun.
Can Fam Physician. 1993 May;39:1144-9.
Three recent articles are examined in which research using the double-blind randomised clinical trial, the case control study, and the quasi-cohort study is described. Understanding the advantages and disadvantages of these methods makes it easier to grasp the pneumococcal vaccine controversy and make an informed choice.
本文研究了最近的三篇文章,其中描述了使用双盲随机临床试验、病例对照研究和半队列研究的研究。了解这些方法的优缺点有助于更容易地理解肺炎球菌疫苗争议并做出明智的选择。