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- Articles and reports: 11F0024M20040007456Description:
The steady convergence of men and women's employment/population ratios has been one of the most dramatic changes observed in the Canadian labour market over, at least, the past 25 years. Indeed, it is probable that, within the population as a whole, gender differences in work behaviour are now substantially less important than differences in skill levels. Nevertheless, there may be persistent differences in the dynamics of employment activity between men and women; for example, differences that are more apparent in relation to job tenure and job transitions. We will try to reconcile the evidence favouring continued convergence with evidence of persistent differences, in order to motivate a range of projection scenarios for Canada's labour market.
In our examination of men and women's employment dynamics, we make use of data from the Canadian Labour Force Survey (LFS) on transitions among the labour market states: self-employed, paid employee and not employed. The LFS was not designed to be a longitudinal survey. However, given that respondent households typically remain in the sample for six consecutive months, it is possible to reconstruct six-month fragments of longitudinal data from the monthly records of household members. Such longitudinal micro-data - altogether consisting of millions of person-months of individual and family level data - is useful for analyses of monthly labour market dynamics over relatively long periods of time, 25 years and more.
Release date: 2004-11-25 - 2. Shorter hospital stays for breast cancer ArchivedArticles and reports: 82-003-X20040017038Geography: CanadaDescription:
In this Health Reports article, a 20-year trend in the average length of hospital stay for breast cancer is traced, using data from the Hospital Morbitiy Database and the Person-oriented Information Database. Reasons for the shorter length of stay are examined and its impact on outcomes is discussed.
Release date: 2004-10-19 - Articles and reports: 11-522-X20020016732Description:
Analysis of dose-response relationships has long been important in toxicology. More recently, this type of analysis has been employed to evaluate public education campaigns. The data that are collected in such evaluations are likely to come from standard household survey designs with all the usual complexities of multiple stages, stratification and variable selection probabilities. On a recent evaluation, a system was developed with the following features: categorization of doses into three or four levels, propensity scoring of dose selection and a new jack-knifed Jonckheere-Terpstra test for a monotone dose-response relationship. This system allows rapid production of tests for monotone dose-response relationships that are corrected both for sample design and for confounding. The focus of this paper will be the results of a Monte-Carlo simulation of the properties of the jack-knifed Jonckheere-Terpstra.
Moreover, there is no experimental control over dosages and the possibility of confounding variables must be considered. Standard regressions in WESVAR and SUDAAN could be used to determine if there is a linear dose-response relationship while controlling on confounders, but such an approach obviously has low power to detect nonlinear but monotone dose-response relationships and is time-consuming to implement if there are a large number of possible outcomes of interest.
Release date: 2004-09-13 - Articles and reports: 11-522-X20020016739Description:
The Labour Force Survey (LFS) was not designed to be a longitudinal survey. However, given that respondent households typically remain in the sample for six consecutive months, it is possible to reconstruct six-month fragments of longitudinal data from the monthly records of household members. Such longitudinal data (altogether consisting of millions of person-months of individual- and family-level data) is useful for analyses of monthly labour market dynamics over relatively long periods of time, 20 years and more.
We make use of these data to estimate hazard functions describing transitions among the labour market states: self-employed, paid employee and not employed. Data on job tenure for the employed, and data on the date last worked for the not employed - together with the date of survey responses - permit the estimated models to include terms reflecting seasonality and macro-economic cycles, as well as the duration dependence of each type of transition. In addition, the LFS data permit spouse labour market activity and family composition variables to be included in the hazard models as time-varying covariates. The estimated hazard equations have been included in the LifePaths socio-economic microsimulation model. In this setting, the equations may be used to simulate lifetime employment activity from past, present and future birth cohorts. Cross-sectional simulation results have been used to validate these models by comparisons with census data from the period 1971 to 1996.
Release date: 2004-09-13 - Articles and reports: 11-522-X20020016744Description:
A developmental trajectory describes the course of a behaviour over age or time. This technical paper provides an overview of a semi-parametric, group-based method for analysing developmental trajectories. This methodology provides an alternative to assuming a homogenous population of trajectories as is done in standard growth modelling.
Four capabilities are described: (1) the capability to identify, rather than assume, distinctive groups of trajectories; (2) the capability to estimate the proportion of the population following each such trajectory group; (3) the capability to relate group membership probability to individual characteristics and circumstances; and (4) the capability to use the group membership probabilities for various other purposes, such as creating profiles of group members.
In addition, two important extensions of the method are described: the capability to add time-varying covariates to trajectory models and the capability to estimate joint trajectory models of distinct but related behaviours. The former provides the statistical capacity for testing if a contemporary factor, such as an experimental intervention or a non-experimental event like pregnancy, deflects a pre-existing trajectory. The latter provides the capability to study the unfolding of distinct but related behaviours such as problematic childhood behaviour and adolescent drug abuse.
Release date: 2004-09-13 - 6. Inflammatory bowel disease: Hospitalization ArchivedArticles and reports: 82-003-X20030046975Geography: CanadaDescription:
Since the early 1980s, the overall hospitalization rate in Canada has fallen sharply, but the rate for inflammatory bowel disease (IBD) has been stable. To some degree, this stability during an era of decline reflects the high rate of readmission among IBD patients, with more than 20% having at least two hospital stays during the course of a year.
Release date: 2004-07-21 - Articles and reports: 12-001-X20040016998Description:
The Canadian Labour Force Survey (LFS) was not designed to be a longitudinal survey. However, given that respondent households typically remain in the sample for six consecutive months, it is possible to reconstruct six-month fragments of longitudinal data from the monthly records of household members. Such longitudinal micro-data - altogether consisting of millions of person-months of individual and family level data - is useful for analyses of monthly labour market dynamics over relatively long periods of time, 25 years and more.
We make use of these data to estimate hazard functions describing transitions among the labour market states: self-employed, paid employee and not employed. Data on job tenure, for employed respondents, and on the date last worked, for those not employed - together with the date of survey responses - allow the construction of models that include terms reflecting seasonality and macro-economic cycles as well as the duration dependence of each type of transition. In addition, the LFS data permits spouse labour market activity and family composition variables to be included in the hazard models as time-varying covariates. The estimated hazard equations have been incorporated in the LifePaths microsimulation model. In that setting, the equations have been used to simulate lifetime employment activity from past, present and future birth cohorts. Simulation results have been validated by comparison with the age profiles of LFS employment/population ratios for the period 1976 to 2001.
Release date: 2004-07-14 - Articles and reports: 75F0002M2004008Description:
This document presents the principles behind the combined panel longitudinal weighting methodology as well as the steps leading to the creation of the weights.
Release date: 2004-06-29 - 9. Influenza vaccination ArchivedArticles and reports: 82-003-X20030026830Geography: CanadaDescription:
In 2000/01, 28% of Canadians aged 20 or older reported having had a flu shot in the previous year, up from 16% in 1996/97. Close to two-thirds of seniors and one-half of people with chronic conditions had been vaccinated. Among the minority of seniors who did not get a flu shot, the main reason for not getting a shot was that they thought it was unnecessary.
Release date: 2004-03-29
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Articles and reports (9)
Articles and reports (9) ((9 results))
- Articles and reports: 11F0024M20040007456Description:
The steady convergence of men and women's employment/population ratios has been one of the most dramatic changes observed in the Canadian labour market over, at least, the past 25 years. Indeed, it is probable that, within the population as a whole, gender differences in work behaviour are now substantially less important than differences in skill levels. Nevertheless, there may be persistent differences in the dynamics of employment activity between men and women; for example, differences that are more apparent in relation to job tenure and job transitions. We will try to reconcile the evidence favouring continued convergence with evidence of persistent differences, in order to motivate a range of projection scenarios for Canada's labour market.
In our examination of men and women's employment dynamics, we make use of data from the Canadian Labour Force Survey (LFS) on transitions among the labour market states: self-employed, paid employee and not employed. The LFS was not designed to be a longitudinal survey. However, given that respondent households typically remain in the sample for six consecutive months, it is possible to reconstruct six-month fragments of longitudinal data from the monthly records of household members. Such longitudinal micro-data - altogether consisting of millions of person-months of individual and family level data - is useful for analyses of monthly labour market dynamics over relatively long periods of time, 25 years and more.
Release date: 2004-11-25 - 2. Shorter hospital stays for breast cancer ArchivedArticles and reports: 82-003-X20040017038Geography: CanadaDescription:
In this Health Reports article, a 20-year trend in the average length of hospital stay for breast cancer is traced, using data from the Hospital Morbitiy Database and the Person-oriented Information Database. Reasons for the shorter length of stay are examined and its impact on outcomes is discussed.
Release date: 2004-10-19 - Articles and reports: 11-522-X20020016732Description:
Analysis of dose-response relationships has long been important in toxicology. More recently, this type of analysis has been employed to evaluate public education campaigns. The data that are collected in such evaluations are likely to come from standard household survey designs with all the usual complexities of multiple stages, stratification and variable selection probabilities. On a recent evaluation, a system was developed with the following features: categorization of doses into three or four levels, propensity scoring of dose selection and a new jack-knifed Jonckheere-Terpstra test for a monotone dose-response relationship. This system allows rapid production of tests for monotone dose-response relationships that are corrected both for sample design and for confounding. The focus of this paper will be the results of a Monte-Carlo simulation of the properties of the jack-knifed Jonckheere-Terpstra.
Moreover, there is no experimental control over dosages and the possibility of confounding variables must be considered. Standard regressions in WESVAR and SUDAAN could be used to determine if there is a linear dose-response relationship while controlling on confounders, but such an approach obviously has low power to detect nonlinear but monotone dose-response relationships and is time-consuming to implement if there are a large number of possible outcomes of interest.
Release date: 2004-09-13 - Articles and reports: 11-522-X20020016739Description:
The Labour Force Survey (LFS) was not designed to be a longitudinal survey. However, given that respondent households typically remain in the sample for six consecutive months, it is possible to reconstruct six-month fragments of longitudinal data from the monthly records of household members. Such longitudinal data (altogether consisting of millions of person-months of individual- and family-level data) is useful for analyses of monthly labour market dynamics over relatively long periods of time, 20 years and more.
We make use of these data to estimate hazard functions describing transitions among the labour market states: self-employed, paid employee and not employed. Data on job tenure for the employed, and data on the date last worked for the not employed - together with the date of survey responses - permit the estimated models to include terms reflecting seasonality and macro-economic cycles, as well as the duration dependence of each type of transition. In addition, the LFS data permit spouse labour market activity and family composition variables to be included in the hazard models as time-varying covariates. The estimated hazard equations have been included in the LifePaths socio-economic microsimulation model. In this setting, the equations may be used to simulate lifetime employment activity from past, present and future birth cohorts. Cross-sectional simulation results have been used to validate these models by comparisons with census data from the period 1971 to 1996.
Release date: 2004-09-13 - Articles and reports: 11-522-X20020016744Description:
A developmental trajectory describes the course of a behaviour over age or time. This technical paper provides an overview of a semi-parametric, group-based method for analysing developmental trajectories. This methodology provides an alternative to assuming a homogenous population of trajectories as is done in standard growth modelling.
Four capabilities are described: (1) the capability to identify, rather than assume, distinctive groups of trajectories; (2) the capability to estimate the proportion of the population following each such trajectory group; (3) the capability to relate group membership probability to individual characteristics and circumstances; and (4) the capability to use the group membership probabilities for various other purposes, such as creating profiles of group members.
In addition, two important extensions of the method are described: the capability to add time-varying covariates to trajectory models and the capability to estimate joint trajectory models of distinct but related behaviours. The former provides the statistical capacity for testing if a contemporary factor, such as an experimental intervention or a non-experimental event like pregnancy, deflects a pre-existing trajectory. The latter provides the capability to study the unfolding of distinct but related behaviours such as problematic childhood behaviour and adolescent drug abuse.
Release date: 2004-09-13 - 6. Inflammatory bowel disease: Hospitalization ArchivedArticles and reports: 82-003-X20030046975Geography: CanadaDescription:
Since the early 1980s, the overall hospitalization rate in Canada has fallen sharply, but the rate for inflammatory bowel disease (IBD) has been stable. To some degree, this stability during an era of decline reflects the high rate of readmission among IBD patients, with more than 20% having at least two hospital stays during the course of a year.
Release date: 2004-07-21 - Articles and reports: 12-001-X20040016998Description:
The Canadian Labour Force Survey (LFS) was not designed to be a longitudinal survey. However, given that respondent households typically remain in the sample for six consecutive months, it is possible to reconstruct six-month fragments of longitudinal data from the monthly records of household members. Such longitudinal micro-data - altogether consisting of millions of person-months of individual and family level data - is useful for analyses of monthly labour market dynamics over relatively long periods of time, 25 years and more.
We make use of these data to estimate hazard functions describing transitions among the labour market states: self-employed, paid employee and not employed. Data on job tenure, for employed respondents, and on the date last worked, for those not employed - together with the date of survey responses - allow the construction of models that include terms reflecting seasonality and macro-economic cycles as well as the duration dependence of each type of transition. In addition, the LFS data permits spouse labour market activity and family composition variables to be included in the hazard models as time-varying covariates. The estimated hazard equations have been incorporated in the LifePaths microsimulation model. In that setting, the equations have been used to simulate lifetime employment activity from past, present and future birth cohorts. Simulation results have been validated by comparison with the age profiles of LFS employment/population ratios for the period 1976 to 2001.
Release date: 2004-07-14 - Articles and reports: 75F0002M2004008Description:
This document presents the principles behind the combined panel longitudinal weighting methodology as well as the steps leading to the creation of the weights.
Release date: 2004-06-29 - 9. Influenza vaccination ArchivedArticles and reports: 82-003-X20030026830Geography: CanadaDescription:
In 2000/01, 28% of Canadians aged 20 or older reported having had a flu shot in the previous year, up from 16% in 1996/97. Close to two-thirds of seniors and one-half of people with chronic conditions had been vaccinated. Among the minority of seniors who did not get a flu shot, the main reason for not getting a shot was that they thought it was unnecessary.
Release date: 2004-03-29
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