Centro de Documentacion de Fundación MAPFRE - Estimating the mean, variance, and confidence limits from censored (< limit of detection), lognormally distributed exposure data

MAP20071020355

Estimating the mean, variance, and confidence limits from censored (< limit of detection), lognormally distributed exposure data / Jimmy L. Perkins, Gary N. Cutter, and Michael S. Cleveland

Sumario: A published statistical technique is applied to an exposure distribution having measurements that are less than the analytical limit of detection (LOD). The method uses the mean and standard deviation of known or quantitated values and the number of censored or nonquantitated values. These data are used to enter a table, which is presented. Lastly, another published technique is used to calculate confidence limits for the mean of a lognormal distribution

En: American Industrial Hygiene Association journal. - Akron, Ohio. - Vol. 51, nº 8, August 1990 ; p. 416-419

1. Higiene industrial . 2. Contaminantes químicos . 3. Contaminación atmosférica . 4. Control de la contaminación . 5. Muestreos . 6. Cálculos . 7. Modelos matemáticos . 8. Estudios estadísticos . I. Cutter, Gary N. . II. Cleveland, Michael S. . III. Título. IV. Título: American Industrial Hygiene Association journal.