Reliability and relative validity of fish consumption data obtained in an exposure assessment study among Montreal-area sportfishers.
Health Conference'97 - Great Lakes/St. Lawrence. Montréal, PQ, CAN, 1997/05/12.
A two-season exercise was undertaken in 29 high-level sportfish consumers to evaluate the reliability and accuracy of study instruments.
Fishers were invited to participate after completing the main study interview (Time 1) in fall 1995 or winter 1996.
Over a 4-week period, they provided a nonconsecutive 7-day weighed food record, kept a fish consumption calendar, and responded to a shortened version of the Time 1 instrument at the end of this period (Time 2).
A second blood sample (at Time 2) was analyzed for whole blood mercury (Hg) and the omega-3 fatty acids eicosapentanoic acid (EPA) and docosahexaenoic acid (DHA) in plasma and erythrocytes.
Identical questions were compared in the Time 1 and Time 2 instruments.
Reported sportfish consumption assessed by the different instruments was subjected to nutrient analysis.
Three estimates of exposure to the target substances were derived from the dietary intake estimates and correlated with their respective Time 2 plasma (EPA, DHA) or blood (Hg) values, and with a kinetically derived interval-specific plasma/blood uptake value.
Remarkable similarities were observed for the data derived from like questions in the Time 1 and 2 questionnaires in both seasons.
However, frank discrepancies between some portion size estimates and measured values may signal cause for concern. (...)
Mots-clés Pascal : Mercure, Détection, Taux, Métal lourd, Plasma sanguin, Liquide biologique, Acide gras, Facteur risque, Consommation alimentaire, Habitude alimentaire, Homme, Contamination, Poisson comestible, Aliment, Santé et environnement, Corrélation, Produit pêche, Canada, Amérique du Nord, Amérique, Eicosapentaénoïque acide, Docosahexaénoïque acide
Mots-clés Pascal anglais : Mercury, Detection, Rate, Heavy metal, Blood plasma, Biological fluid, Fatty acids, Risk factor, Food intake, Food habit, Human, Contamination, Edible fish, Food, Health and environment, Correlation, Seafood, Canada, North America, America, Eicosapentaenoic acid, Docosahexaenoic acid
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0245320
Code Inist : 002B03H. Création : 16/11/1999.