Chronological trend in blood lead levels between 1976 and 1980. Journal of Medicine.

Annest, Joseph I ... [et al.].

1983

539
SEPARATA

Analisys of a chronological trend in data from the second National Health and Nutrition Examination Survey indicated that average blood lead levels in the USA drooped approximately 37 per cent from February 1976 through February 1980, there was no evidence that this trend was due to errors. The trend was present even after accounting for differences in race, sex, age, region of the country, season, income, and degree of urbanization. Changes in exposure to lead in paint or in the diet are unlikely explanations of the trend . However, the correlation of blood lead levels with the lead level in gasoline was highly significant and in population subgroups defined by race, sex, and age. Although strong correlation does not prove cause and effect, the most likely explanation for the fall in blood lead levels is a reduction in the lead content of gasoline during this period..

Presenta tbls. y gráfs

ESTADOS UNIDOS; PLOMO; SANGRE; EFECTOS EN LA SALUD; ANALISIS ESTADISTICO;