论文部分内容阅读
一、随机化和抽样误差医学科学研究中,常采用抽样研究的方法,从总体中随机抽取出样本,通过对样本的研究来推论总体,如对随机抽取80例胃溃疡患者的治疗来推论中西医结合疗法对所有胃溃疡患者的疗效。随机化是抽样研究和抽样分配中十分重要的原则,随机化即是抽取样本以前要使总体中每个单位有同等的被抽取的机会。在动物实验中,把动物分配成几组,也应使每个
First, the randomization and sampling error Medical science research, often using the method of sampling, from the overall random sample of the sample, to infer the overall population, such as the random selection of 80 patients with gastric ulcer treatment to inference Western medicine combined therapy for all patients with gastric ulcer efficacy. Randomisation is a very important principle in sampling research and sample allocation. Randomization is the same chance of being extracted for each unit in the population before sampling. In animal experiments, the animals are divided into groups, each should be made