Roggi C, Minoia C, Silva S, Ronchi A, Gatti A, Maccarini L
Dip. di Medicina Preventiva, Università di Pavia.
Ann Ig. 1995 Sep-Oct;7(5):359-67.
The goal of this study was to evaluate the distribution of blood lead level (B.L.L.) in a general adult population aged between 20 and 79 years non professionally exposed to lead, and to verify the influence on B.L.L. of demographic variables (i.e. sex and age), behavioural habits (i.e. alcohol consumption and cigarette smoking), and anthropometric variables (i.e. body mass index--BMI). We studied the distribution of B.L.L. by explorative analysis method (E.D.A.), which showed that data did not follow a Gaussian distribution. Distribution fit to normality was determined by Shapiro-Wilk test, that identified the natural logarithm of B.L.L. as the best transformation in order to normalize the parameter. According to literature data, sex appears one of the most important variable in determining B.L.L. In both sexes we found a direct relation between B.L.L. and age. Alcohol consumption emerged as the third most important variable that influences B.L.L. BMI and cigarette smoking do not influence data distribution.
本研究的目的是评估年龄在20至79岁之间非职业性接触铅的普通成年人群的血铅水平（B.L.L.）分布，并验证人口统计学变量（即性别和年龄）、行为习惯（即饮酒和吸烟）以及人体测量学变量（即体重指数——BMI）对血铅水平的影响。我们通过探索性分析方法（E.D.A.）研究了血铅水平的分布，结果表明数据不呈高斯分布。通过Shapiro-Wilk检验确定分布是否符合正态性，该检验确定血铅水平的自然对数是使参数标准化的最佳变换。根据文献数据，性别似乎是决定血铅水平的最重要变量之一。在两性中，我们都发现血铅水平与年龄之间存在直接关系。饮酒是影响血铅水平的第三个最重要变量。BMI和吸烟不影响数据分布。
