临床医生进行病因研究,关系到对疾病的正确诊断、有效的治疗和指导预防,是临床科研选题的重要方面。病例对照研究方法的论证强度优于医生们习惯的病例组分析或现况调查。其逻辑思维方法与临床医生诊察病人的方式相似。具有样本小、相对简便易行等优点,在我国临床科研中应大力普及。 Clinicians conduct etiological studies, related to the correct diagnosis of the disease, effective treatment and prevention guidance, is an important aspect of clinical research topics. The strength of the evidence from case-control studies is superior to the case-group analyzes or current status surveys used by physicians. The logical way of thinking is similar to how clinicians look at patients. With a small sample, relatively simple and easy, etc., in our clinical research should be vigorously popularized.