Analysis of Coarsely Grouped Data from the Lognormal Distribution
将缺失信息技术应用于分组且假设服从对数正态分布的血液铅数据，扩展最大似然技术至一般线性模型，拟合多种模型并计算似然比统计量，以检验不同参数化的显著性。
A missing information technique is applied to blood lead data that is both grouped and assumed to be lognormally distributed. These maximum likelihood techniques are extended from the simple lognormal case to obtain solutions for a general linear model case. Various models are fitted to the data, and likelihood ratio statistics are computed to test for significance of various parameterizations. The techniques are applied to a data set of over 130,000 blood lead values collected by the city of New York. The data, collected from 1970 to 1976, are part of a large-scale screening program and have implications for the current ambient air lead standard.