| Titre : | Assessment of Selection Bias in the Canadian Case-Control Study of Residential Magnetic Field Exposure and Childhood Leukemia. (2008) |
| Auteurs : | MEZEI (Gabor) : USA. Electric Power Research Institute. Palo Alto. CA. ; Marilyn BORUGIAN ; Mary-L MCBRIDE ; John-J SPINELLI ; WONG (Paul) : CAN. Pw International. Inc. Burnaby. BC. ; British Columbia Cancer Agency. Vancouver. BC. CAN |
| Type de document : | Article |
| Dans : | American journal of epidemiology (vol. 167, n° 12, 2008) |
| Pagination : | 1504-1510 |
| Langues: | Anglais |
| Mots-clés : | Leucémie ; Biais ; Critère sélection ; Canada ; Enquête cas témoin ; Epidémiologie ; Domicile ; Santé environnementale ; Enfant ; Magnétisme ; Amérique ; Homme ; Amérique du Nord ; Cancer |
| Résumé : | [BDSP. Notice produite par INIST-CNRS R0x78so8. Diffusion soumise à autorisation]. The authors evaluated the role of selection bias in the 1999 Canadian case-control study of residential magnetic field exposure and childhood leukemia. They included cases, participating controls, and first-choice nonparticipating controls in their analyses. Exposure was assessed by wire coding, a classification system based on the distribution line characteristics near homes. Although an imperfect measure of magnetic field exposure, wire coding is the only method applicable to nonparticipating subjects. First-choice nonparticipant controls tended to be of lower socioeconomic status than their replacements (non-first-choice participant controls), and lower socioeconomic status was related to higher wire code categories. The odds ratios for developing childhood leukemia in the highest exposure category were 1.6 (95% confidence interval : 1.0,2.6) when the actual participating controls were used and 1.3 (95% confidence interval : 0.8,2.1) when the first-choice ideal controls were used, regardless of their participation. Overall, the authors conclude that, although there is some evidence for control selection or participation bias in the Canadian study, it is unlikely to explain entirely the observed association between magnetic field exposure and childhood leukemia. Inherent problems in exposure assessment for nonparticipating subjects, however, limit the interpretations of these results, and the role of selection bias cannot entirely be dismissed on the basis of these results alone. |
Service Documentation EHESP
Me connecter
PORTAIL DOCUMENTAIRE
École des hautes études en santé publique
Catalogue
Multi-bases
Accueil
Sélection de la langue
Adresse
Service Documentation EHESPBibliothèque Rennes Avenue du Professeur Léon Bernard – CS 74312 – 35043 Rennes Cedex Bibliothèque MSSH Paris 20 avenue George Sand - 93210 La Plaine Saint-Denis
France
Bibliothèque Rennes : 02 99 02 29 50 Bibliothèque MSSH Paris : 02 99 02 24 50
contact