Centro de Documentacion de Fundación MAPFRE - Confidence intervals for aritmetic means of lognormally distributed exposures

MAP20071020192

Confidence intervals for aritmetic means of lognormally distributed exposures / Ben G. Armstrong

Sumario: Distributions of concentrations of environmental contaminants are often approximately lognormally distributed. The arithmetic means of such distributions is frequently the summary measure most relevant to health. Although methods for estimating arithmetic means of lognormal distributions from samples are becoming better known, methods for determining the precision of estimates by confidence intervals are not. In this paper, four approximate intervals are compared with the computationally cumbersome exact interval

En: American Industrial Hygiene Association journal. - Akron, Ohio. - Vol. 53, nº 8, August 1992 ; p. 481-485

1. Higiene industrial . 2. Contaminantes químicos . 3. Contaminación atmosférica . 4. Control de la contaminación . 5. Muestreos . 6. Cálculos . 7. Modelos matemáticos . I. Título. II. Título: American Industrial Hygiene Association journal.