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- 1. Estimating relative survival for cancer: An analysis of bias introduced by outdated life tables ArchivedArticles and reports: 82-003-X201400211903Geography: CanadaDescription:
Based on data from the Canadian Cancer Registry, this study examines the impact of using historical rather than current life tables to estimate expected survival in calculations of relative survival ratios. Results are presented by sex, age group, and survival duration.
Release date: 2014-02-19 - 2. Validation of an index to estimate the prevalence of frailty among community-dwelling seniors ArchivedArticles and reports: 82-003-X201300911864Geography: CanadaDescription:
This study validates cut-points for a frailty index to identify seniors at risk of a hospital-related event and estimates the number of frail seniors living in the community.
Release date: 2013-09-18 - 3. An integrated modeling approach to unemployment rate estimation for sub-provincial areas of Canada ArchivedArticles and reports: 12-001-X200800110614Geography: CanadaDescription:
The Canadian Labour Force Survey (LFS) produces monthly estimates of the unemployment rate at national and provincial levels. The LFS also releases unemployment estimates for sub-provincial areas such as Census Metropolitan Areas (CMAs) and Urban Centers (UCs). However, for some sub-provincial areas, the direct estimates are not reliable since the sample size in some areas is quite small. The small area estimation in LFS concerns estimation of unemployment rates for local sub-provincial areas such as CMA/UCs using small area models. In this paper, we will discuss various models including the Fay-Herriot model and cross-sectional and time series models. In particular, an integrated non-linear mixed effects model will be proposed under the hierarchical Bayes (HB) framework for the LFS unemployment rate estimation. Monthly Employment Insurance (EI) beneficiary data at the CMA/UC level are used as auxiliary covariates in the model. A HB approach with the Gibbs sampling method is used to obtain the estimates of posterior means and posterior variances of the CMA/UC level unemployment rates. The proposed HB model leads to reliable model-based estimates in terms of CV reduction. Model fit analysis and comparison of the model-based estimates with the direct estimates are presented in the paper.
Release date: 2008-06-26 - 4. Research on Modifications to the Method of Preliminary Estimates of Interprovincial Migration ArchivedArticles and reports: 91F0015M2005007Geography: CanadaDescription:
The Population Estimates Program at Statistics Canada is using internal migration estimates derived from administrative sources of data. There are two versions of migration estimates currently available, preliminary (P), based on Child Tax Credit information and final (F), produced using information from income tax reports. For some reference dates they could be significantly different. This paper summarises the research undertaken in Demography Division to modify the current method for preliminary estimates in order to decrease those differences. After a brief analysis of the differences, six methods are tested: 1) regression of out-migration; 2) regression of in- and out-migration separately; 3) regression of net migration; 4) the exponentially weighted moving average; 5) the U.S. Bureau of Census approach; and 6) method of using the first difference regression. It seems that the methods in which final and preliminary migration data are combined to estimate preliminary net migration (Method 3) are the best approach to improve convergence between preliminary and final estimates of internal migration for the Population Estimation Program. This approach allows for "smoothing" of some erratic patterns displayed by the former method while preserving CTB data's ability to capture current shifts in migration patterns.
Release date: 2005-06-20 - Articles and reports: 91F0015M2004006Geography: CanadaDescription:
The paper assesses and compares new and old methodologies for official estimates of migration within and among provinces and territories for the period 1996/97 to 2000/01.
Release date: 2004-06-17 - Articles and reports: 91F0015M1997004Geography: CanadaDescription:
The estimation of the population by age, sex and marital status for each province is a difficult task, principally because of migration. The characteristics of migrants are available only from responses to the census. Until 1991, the census included only the question on place of residence five years ago. Thus, a person who had a different residence five years earlier was considered as a migrant and was attributed the characteristics reported for him/her at the time of the census. However, the respondent had up to five years to change characteristics, particularly those relating to marital status.
Since 1991, the census has asked a question on the place of residence one year ago. The same procedure attributes to the migrant the characteristics reported one year earlier, but this time there is only one year to change them.The article describes, in some detail, the methods now used by Statistics Canada to estimate the characteristics of migrants and evaluates the advantages of using the data on place of residence one year ago.
Release date: 1997-12-23 - 7. Measuring the age of retirement ArchivedArticles and reports: 75-001-X19970023071Geography: CanadaDescription:
The purpose of this article is to present a method of estimating the distribution of ages at retirement (and from these distributions, medians), and to describe what these distributions look like over time, by such characteristics as retirees' education, sex, employment class and industry of last employment.
Release date: 1997-06-11 - 8. The Impact of estimation method and population adjustment on Canadian life table estimates ArchivedArticles and reports: 82-003-X19950032450Geography: CanadaDescription:
Abridged life tables centred on 1991 were produced from the 1991 Canadian census, net census undercoverage estimates, and death data from 1990 to 1992. The sensitivity of life table values to differing methods of estimation and population estimates was investigated. The results from four methods by Greville, Chiang, and Keyfitz were compared, and population undercoverage, were used to test the effects of method and type of population estimate on life table values. The results indicate that the method used to derive the estimates had much less influence on the life table values than did the choice of population estimate. The change life expectancy at birth due to the method of calculation chosen was at most 15 days, whereas the change due to the population estimate chosen was about 73 days. Since there are age, sex and provincial variations in net undercoverage rates, life expectancies differed accordingly.
Release date: 1996-02-09
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- 1. Estimating relative survival for cancer: An analysis of bias introduced by outdated life tables ArchivedArticles and reports: 82-003-X201400211903Geography: CanadaDescription:
Based on data from the Canadian Cancer Registry, this study examines the impact of using historical rather than current life tables to estimate expected survival in calculations of relative survival ratios. Results are presented by sex, age group, and survival duration.
Release date: 2014-02-19 - 2. Validation of an index to estimate the prevalence of frailty among community-dwelling seniors ArchivedArticles and reports: 82-003-X201300911864Geography: CanadaDescription:
This study validates cut-points for a frailty index to identify seniors at risk of a hospital-related event and estimates the number of frail seniors living in the community.
Release date: 2013-09-18 - 3. An integrated modeling approach to unemployment rate estimation for sub-provincial areas of Canada ArchivedArticles and reports: 12-001-X200800110614Geography: CanadaDescription:
The Canadian Labour Force Survey (LFS) produces monthly estimates of the unemployment rate at national and provincial levels. The LFS also releases unemployment estimates for sub-provincial areas such as Census Metropolitan Areas (CMAs) and Urban Centers (UCs). However, for some sub-provincial areas, the direct estimates are not reliable since the sample size in some areas is quite small. The small area estimation in LFS concerns estimation of unemployment rates for local sub-provincial areas such as CMA/UCs using small area models. In this paper, we will discuss various models including the Fay-Herriot model and cross-sectional and time series models. In particular, an integrated non-linear mixed effects model will be proposed under the hierarchical Bayes (HB) framework for the LFS unemployment rate estimation. Monthly Employment Insurance (EI) beneficiary data at the CMA/UC level are used as auxiliary covariates in the model. A HB approach with the Gibbs sampling method is used to obtain the estimates of posterior means and posterior variances of the CMA/UC level unemployment rates. The proposed HB model leads to reliable model-based estimates in terms of CV reduction. Model fit analysis and comparison of the model-based estimates with the direct estimates are presented in the paper.
Release date: 2008-06-26 - 4. Research on Modifications to the Method of Preliminary Estimates of Interprovincial Migration ArchivedArticles and reports: 91F0015M2005007Geography: CanadaDescription:
The Population Estimates Program at Statistics Canada is using internal migration estimates derived from administrative sources of data. There are two versions of migration estimates currently available, preliminary (P), based on Child Tax Credit information and final (F), produced using information from income tax reports. For some reference dates they could be significantly different. This paper summarises the research undertaken in Demography Division to modify the current method for preliminary estimates in order to decrease those differences. After a brief analysis of the differences, six methods are tested: 1) regression of out-migration; 2) regression of in- and out-migration separately; 3) regression of net migration; 4) the exponentially weighted moving average; 5) the U.S. Bureau of Census approach; and 6) method of using the first difference regression. It seems that the methods in which final and preliminary migration data are combined to estimate preliminary net migration (Method 3) are the best approach to improve convergence between preliminary and final estimates of internal migration for the Population Estimation Program. This approach allows for "smoothing" of some erratic patterns displayed by the former method while preserving CTB data's ability to capture current shifts in migration patterns.
Release date: 2005-06-20 - Articles and reports: 91F0015M2004006Geography: CanadaDescription:
The paper assesses and compares new and old methodologies for official estimates of migration within and among provinces and territories for the period 1996/97 to 2000/01.
Release date: 2004-06-17 - Articles and reports: 91F0015M1997004Geography: CanadaDescription:
The estimation of the population by age, sex and marital status for each province is a difficult task, principally because of migration. The characteristics of migrants are available only from responses to the census. Until 1991, the census included only the question on place of residence five years ago. Thus, a person who had a different residence five years earlier was considered as a migrant and was attributed the characteristics reported for him/her at the time of the census. However, the respondent had up to five years to change characteristics, particularly those relating to marital status.
Since 1991, the census has asked a question on the place of residence one year ago. The same procedure attributes to the migrant the characteristics reported one year earlier, but this time there is only one year to change them.The article describes, in some detail, the methods now used by Statistics Canada to estimate the characteristics of migrants and evaluates the advantages of using the data on place of residence one year ago.
Release date: 1997-12-23 - 7. Measuring the age of retirement ArchivedArticles and reports: 75-001-X19970023071Geography: CanadaDescription:
The purpose of this article is to present a method of estimating the distribution of ages at retirement (and from these distributions, medians), and to describe what these distributions look like over time, by such characteristics as retirees' education, sex, employment class and industry of last employment.
Release date: 1997-06-11 - 8. The Impact of estimation method and population adjustment on Canadian life table estimates ArchivedArticles and reports: 82-003-X19950032450Geography: CanadaDescription:
Abridged life tables centred on 1991 were produced from the 1991 Canadian census, net census undercoverage estimates, and death data from 1990 to 1992. The sensitivity of life table values to differing methods of estimation and population estimates was investigated. The results from four methods by Greville, Chiang, and Keyfitz were compared, and population undercoverage, were used to test the effects of method and type of population estimate on life table values. The results indicate that the method used to derive the estimates had much less influence on the life table values than did the choice of population estimate. The change life expectancy at birth due to the method of calculation chosen was at most 15 days, whereas the change due to the population estimate chosen was about 73 days. Since there are age, sex and provincial variations in net undercoverage rates, life expectancies differed accordingly.
Release date: 1996-02-09
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