00000nam 2200000za 4500 9.832485 CaOODSP 20250801120539 cr ||||||||||| 170407s2017 onc ob f000 0 eng d 978-0-660-07655-3 CaOODSP eng n-cn--- CS11-633/2017-6E-PDF Finès, Philippe. Imputing postal codes to analyze ecological variables in longitudinal cohorts [electronic resource] : exposure to particulate matter in the Canadian Census Health and Environment Cohort Database / by Philippe Finès, Lauren Pinault, and Michael Tjepkema, Health Analysis Division. [Ottawa] : Statistics Canada, 2017. 23 p. Analytical studies : methods and references, 2371-3429 ; no. 6 Issued also in French under title: Imputation de codes postaux en vue de l’analyse de variables écologiques dans les cohortes longitudinales : exposition aux matières particulaires dans la base de données Cohorte santé et environnement du Recensement du Canada. "Release date: March 13, 2017"--Cover. Includes bibliographical references. "This paper describes a method of imputing missing postal codes in a longitudinal database. The 1991 Canadian Census Health and Environment Cohort (CanCHEC), which contains information on individuals from the 1991 Census long-form questionnaire linked with T1 tax return files for the 1984-to-2011 period, is used to illustrate and validate the method. The cohort contains up to 28 consecutive fields for postal code of residence, but because of frequent gaps in postal code history, missing postal codes must be imputed. To validate the imputation method, two experiments were devised where 5% and 10% of all postal codes from a subset with full history were randomly removed and imputed. The proportion of discrepancies in displacements and mean exposure were consistently higher in the experiment with 10% removed postal codes"--Abstract, p. 5. gccst Census gccst Databases gccst Methodology Pinault, Lauren L., 1983- Tjepkema, Michael. Statistics Canada. Imputation de codes postaux en vue de l’analyse de variables écologiques dans les cohortes longitudinales (CaOODSP)9.832486 Analytical studies : methods and references (Statistics Canada) 2371-3429 ; no. 6. (CaOODSP)9.821678 PDF 230 KB https://publications.gc.ca/collections/collection_2017/statcan/11-633-x/11-633-x2017006-eng.pdf 11-633-X, no. 006