2007 年 28 巻 Special_Issue_1 号 p. S63-S73
Recently, risk assessment attracts increasingly the attention of academic researchers as well as of various stakeholders in our society. Biostatistical approaches are essential in quantitative risk assessment of human environmental factors. We review recent development of quantitative risk assessment, and discuss the need of further researches. Our interests will be placed on the contrast between an individual and a society. The two aspects of the contrast are: that between toxic responses of an individual and of individuals in a population, and that between judgements for private safety and for public safety.