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All (18)

All (18) (0 to 10 of 18 results)

1. Indirect sampling: The foundations of the generalized weight share method Archived
Articles and reports: 12-001-X20060029551
Description:
To select a survey sample, it happens that one does not have a frame containing the desired collection units, but rather another frame of units linked in a certain way to the list of collection units. It can then be considered to select a sample from the available frame in order to produce an estimate for the desired target population by using the links existing between the two. This can be designated by Indirect Sampling.
Estimation for the target population surveyed by Indirect Sampling can constitute a big challenge, in particular if the links between the units of the two are not one-to-one. The problem comes especially from the difficulty to associate a selection probability, or an estimation weight, to the surveyed units of the target population. In order to solve this type of estimation problem, the Generalized Weight Share Method (GWSM) has been developed by Lavallée (1995) and Lavallée (2002). The GWSM provides an estimation weight for every surveyed unit of the target population.
This paper first describes Indirect Sampling, which constitutes the foundations of the GWSM. Second, an overview of the GWSM is given where we formulate the GWSM in a theoretical framework using matrix notation. Third, we present some properties of the GWSM such as unbiasedness and transitivity. Fourth, we consider the special case where the links between the two populations are expressed by indicator variables. Fifth, some special typical linkages are studied to assess their impact on the GWSM. Finally, we consider the problem of optimality. We obtain optimal weights in a weak sense (for specific values of the variable of interest), and conditions for which these weights are also optimal in a strong sense and independent of the variable of interest.
Release date: 2006-12-21
2. Extension of the indirect sampling method and its application to tourism Archived
Articles and reports: 12-001-X20060029552
Description:
A survey of tourist visits originating intra and extra-region in Brittany was needed. For concrete material reasons, "border surveys" could no longer be used. The major problem is the lack of a sampling frame that allows for direct contact with tourists. This problem was addressed by applying the indirect sampling method, the weighting for which is obtained using the generalized weight share method developed recently by Lavallée (1995), Lavallée (2002), Deville (1999) and also presented recently in Lavallée and Caron (2001). This article shows how to adapt the method to the survey. A number of extensions are required. One of the extensions, designed to estimate the total of a population from which a Bernouilli sample has been taken, will be developed.
Release date: 2006-12-21
3. On sample survey designs for consumer price indexes Archived
Articles and reports: 12-001-X20060029554
Description:
Survey sampling to estimate a Consumer Price Index (CPI) is quite complicated, generally requiring a combination of data from at least two surveys: one giving prices, one giving expenditure weights. Fundamentally different approaches to the sampling process - probability sampling and purposive sampling - have each been strongly advocated and are used by different countries in the collection of price data. By constructing a small "world" of purchases and prices from scanner data on cereal and then simulating various sampling and estimation techniques, we compare the results of two design and estimation approaches: the probability approach of the United States and the purposive approach of the United Kingdom. For the same amount of information collected, but given the use of different estimators, the United Kingdom's methods appear to offer better overall accuracy in targeting a population superlative consumer price index.
Release date: 2006-12-21
4. Product Market Competition and Agency Costs Archived
Articles and reports: 11F0019M2006287
Geography: Canada
Description:
We model the effects of product market competition on agency costs, and develop two main empirical predictions. First, competition, by reducing agency costs, unambiguously increases the importance firms place on quality improvements. This leads to higher powered incentives, and in turn to increased effort and quality. Second, these effects are increasing in the severity of agency problems, and should be stronger in large, hierarchical corporations (where agency problems are more severe) than in entrepreneurial firms. We test the predictions of our model using a unique dataset with both firm and employee characteristics.
Release date: 2006-12-04
5. Homicide in Canada, 2005 Archived
Articles and reports: 85-002-X20060069507
Description:
This annual report is an examination of homicide in Canada. Detailed information is presented on the characteristics of homicide incidents (murder, manslaughter and infanticide), victims and accused within the context of both short and long-term trends. Geographical patterns of homicide are examined at the national and provincial/territorial levels, as well as for major metropolitan areas. Other key themes include international comparisons of homicide, gang-related homicides, firearm-related homicides, youth homicide and family (including spousal) homicides. The data are intended to respond to the needs of those who work in the criminal justice system as well as to inform researchers, policy analysts, academics, the media and the public on the nature and extent of homicide in Canada.
Release date: 2006-11-08
6. What Canadian households spend on culture goods and services Archived
Articles and reports: 87-004-X20030049503
Geography: Canada
Description:
Using data from the Survey of Household Spending (SHS), this article explores household spending on culture goods and services over a five year period, from 1999 to 2004, and examines differences in average spending by household type.
Release date: 2006-11-02
7. Victimization and Offending in Canada's Territories Archived
Articles and reports: 85F0033M2006011
Geography: Province or territory
Description:
Using recent police-reported and self-reported data, this new report provides a profile of the extent and nature of victimization and offending in Canada's territories.
The report finds that northern residents experience higher rates of violent victimization and are more likely to be victims of spousal violence than residents in the rest of Canada. Furthermore, police-reported crime rates in the North are much higher than those in the provinces.
The report also examines particular factors that seem to be associated with higher rates of victimization and offending. All are more common in the North. These factors include: northern residents are younger on average, than residents in the rest of Canada; the territories have higher proportions of lone-parent families and common-law families; they have higher rates of unemployment; and the territories also have higher proportions of Aboriginal residents compared to the provinces.
Release date: 2006-10-30
8. Competing for the Retail Drug Market Archived
Articles and reports: 11-621-M2006048
Geography: Canada
Description:
This study analyzes drug sales by type of retailer between 1998 and 2005. The analysis focuses on the competition between pharmacies, food stores and general merchandise stores. Retail sales of drugs in Canada are also compared with those of the United States. The main source of data is the Quarterly Retail Commodity Survey.
Release date: 2006-09-18
9. Aging Well: Time Use Patterns of Older Canadians Archived
Articles and reports: 89-622-X2006002
Description:
This study provides a detailed analysis of findings based on the 2005 General Social Survey on Time Use, with some analysis of trends over time using the 1992 and 1998 time use surveys. It addresses whether older Canadians are aging well by examining the relative importance their time use patterns and health have on their overall life satisfaction.
Like other countries in the Western world, Canada's population is aging. For more than a decade, our society has been concerned with the negative aspects of population aging such as how to care for those who are old, or how to manage pension schemes for increasing numbers of retirees. Yet with the impending retirement of a large cohort of baby boomers, the attention has been turned to more positive aspects of aging.
The term 'aging well' now has become part of the language when thinking about older adults. Aging is seen as an ongoing process of managing the challenges associated with life transitions and with changing levels of personal resources such as health, wealth and social connections. Those who age well are able to find a balance or fit between their activities and these resources and to remain satisfied with their lives.
For women and men, and for younger and older seniors, the ideal balance may differ, though for both, health is a key resource. In fact, one of the key theories of aging well is that those who are in good health have the potential to have more choices over their daily activities and are more likely to feel satisfied with their lives. Active engagement is seen as another key component of aging well.
Time use patterns of older Canadians provide a useful window into understanding aging well. This study examines the main components of aging well-activity patterns and health of older Canadians. It considers several questions about aging well:1. What are the activity patterns of older Canadians? 2. What are the trends in activity patterns over time?
These two questions provide a picture of how older adults are engaged in various activities and whether levels of activity patterns change with age:3. What are the levels of health of older Canadians?4. How do levels of health change with age?
These two questions provide a picture of how the 'resource' of health may differ among older Canadians.
5. What is the relationship among activity patterns, health and life satisfaction?This final question provides insight into the relative importance of health and activity level in aging well.
Release date: 2006-07-26
10. On calibration estimation for quantiles Archived
Articles and reports: 12-001-X20060019255
Description:
In this paper, we consider the estimation of quantiles using the calibration paradigm. The proposed methodology relies on an approach similar to the one leading to the original calibration estimators of Deville and Särndal (1992). An appealing property of the new methodology is that it is not necessary to know the values of the auxiliary variables for all units in the population. It suffices instead to know the corresponding quantiles for the auxiliary variables. When the quadratic metric is adopted, an analytic representation of the calibration weights is obtained. In this situation, the weights are similar to those leading to the generalized regression (GREG) estimator. Variance estimation and construction of confidence intervals are discussed. In a small simulation study, a calibration estimator is compared to other popular estimators for quantiles that also make use of auxiliary information.
Release date: 2006-07-20

Stats in brief (1)

Stats in brief (1) ((1 result))

1. Biotechnology scientific activities in federal government departments and agencies, 2004/2005 Archived
Stats in brief: 88-001-X20060029114
Description:
Data on science and technology (S&T) expenditures and full-time equivalent allocated to biotechnology for the fiscal year 2004/2005 were collected from selected federal departments and agencies. Survey results contribute to the work of the Canadian Biotechnology Strategy. The S&T data collected for biotechnology are composed of expenditures on research and development (R&D) and related scientific activities (RSA) for both intramural and extramural performers and also the full-time equivalent associated with these activities.
Release date: 2006-03-09

Articles and reports (17)

Articles and reports (17) (0 to 10 of 17 results)

1. Indirect sampling: The foundations of the generalized weight share method Archived
Articles and reports: 12-001-X20060029551
Description:
To select a survey sample, it happens that one does not have a frame containing the desired collection units, but rather another frame of units linked in a certain way to the list of collection units. It can then be considered to select a sample from the available frame in order to produce an estimate for the desired target population by using the links existing between the two. This can be designated by Indirect Sampling.
Estimation for the target population surveyed by Indirect Sampling can constitute a big challenge, in particular if the links between the units of the two are not one-to-one. The problem comes especially from the difficulty to associate a selection probability, or an estimation weight, to the surveyed units of the target population. In order to solve this type of estimation problem, the Generalized Weight Share Method (GWSM) has been developed by Lavallée (1995) and Lavallée (2002). The GWSM provides an estimation weight for every surveyed unit of the target population.
This paper first describes Indirect Sampling, which constitutes the foundations of the GWSM. Second, an overview of the GWSM is given where we formulate the GWSM in a theoretical framework using matrix notation. Third, we present some properties of the GWSM such as unbiasedness and transitivity. Fourth, we consider the special case where the links between the two populations are expressed by indicator variables. Fifth, some special typical linkages are studied to assess their impact on the GWSM. Finally, we consider the problem of optimality. We obtain optimal weights in a weak sense (for specific values of the variable of interest), and conditions for which these weights are also optimal in a strong sense and independent of the variable of interest.
Release date: 2006-12-21
2. Extension of the indirect sampling method and its application to tourism Archived
Articles and reports: 12-001-X20060029552
Description:
A survey of tourist visits originating intra and extra-region in Brittany was needed. For concrete material reasons, "border surveys" could no longer be used. The major problem is the lack of a sampling frame that allows for direct contact with tourists. This problem was addressed by applying the indirect sampling method, the weighting for which is obtained using the generalized weight share method developed recently by Lavallée (1995), Lavallée (2002), Deville (1999) and also presented recently in Lavallée and Caron (2001). This article shows how to adapt the method to the survey. A number of extensions are required. One of the extensions, designed to estimate the total of a population from which a Bernouilli sample has been taken, will be developed.
Release date: 2006-12-21
3. On sample survey designs for consumer price indexes Archived
Articles and reports: 12-001-X20060029554
Description:
Survey sampling to estimate a Consumer Price Index (CPI) is quite complicated, generally requiring a combination of data from at least two surveys: one giving prices, one giving expenditure weights. Fundamentally different approaches to the sampling process - probability sampling and purposive sampling - have each been strongly advocated and are used by different countries in the collection of price data. By constructing a small "world" of purchases and prices from scanner data on cereal and then simulating various sampling and estimation techniques, we compare the results of two design and estimation approaches: the probability approach of the United States and the purposive approach of the United Kingdom. For the same amount of information collected, but given the use of different estimators, the United Kingdom's methods appear to offer better overall accuracy in targeting a population superlative consumer price index.
Release date: 2006-12-21
4. Product Market Competition and Agency Costs Archived
Articles and reports: 11F0019M2006287
Geography: Canada
Description:
We model the effects of product market competition on agency costs, and develop two main empirical predictions. First, competition, by reducing agency costs, unambiguously increases the importance firms place on quality improvements. This leads to higher powered incentives, and in turn to increased effort and quality. Second, these effects are increasing in the severity of agency problems, and should be stronger in large, hierarchical corporations (where agency problems are more severe) than in entrepreneurial firms. We test the predictions of our model using a unique dataset with both firm and employee characteristics.
Release date: 2006-12-04
5. Homicide in Canada, 2005 Archived
Articles and reports: 85-002-X20060069507
Description:
This annual report is an examination of homicide in Canada. Detailed information is presented on the characteristics of homicide incidents (murder, manslaughter and infanticide), victims and accused within the context of both short and long-term trends. Geographical patterns of homicide are examined at the national and provincial/territorial levels, as well as for major metropolitan areas. Other key themes include international comparisons of homicide, gang-related homicides, firearm-related homicides, youth homicide and family (including spousal) homicides. The data are intended to respond to the needs of those who work in the criminal justice system as well as to inform researchers, policy analysts, academics, the media and the public on the nature and extent of homicide in Canada.
Release date: 2006-11-08
6. What Canadian households spend on culture goods and services Archived
Articles and reports: 87-004-X20030049503
Geography: Canada
Description:
Using data from the Survey of Household Spending (SHS), this article explores household spending on culture goods and services over a five year period, from 1999 to 2004, and examines differences in average spending by household type.
Release date: 2006-11-02
7. Victimization and Offending in Canada's Territories Archived
Articles and reports: 85F0033M2006011
Geography: Province or territory
Description:
Using recent police-reported and self-reported data, this new report provides a profile of the extent and nature of victimization and offending in Canada's territories.
The report finds that northern residents experience higher rates of violent victimization and are more likely to be victims of spousal violence than residents in the rest of Canada. Furthermore, police-reported crime rates in the North are much higher than those in the provinces.
The report also examines particular factors that seem to be associated with higher rates of victimization and offending. All are more common in the North. These factors include: northern residents are younger on average, than residents in the rest of Canada; the territories have higher proportions of lone-parent families and common-law families; they have higher rates of unemployment; and the territories also have higher proportions of Aboriginal residents compared to the provinces.
Release date: 2006-10-30
8. Competing for the Retail Drug Market Archived
Articles and reports: 11-621-M2006048
Geography: Canada
Description:
This study analyzes drug sales by type of retailer between 1998 and 2005. The analysis focuses on the competition between pharmacies, food stores and general merchandise stores. Retail sales of drugs in Canada are also compared with those of the United States. The main source of data is the Quarterly Retail Commodity Survey.
Release date: 2006-09-18
9. Aging Well: Time Use Patterns of Older Canadians Archived
Articles and reports: 89-622-X2006002
Description:
This study provides a detailed analysis of findings based on the 2005 General Social Survey on Time Use, with some analysis of trends over time using the 1992 and 1998 time use surveys. It addresses whether older Canadians are aging well by examining the relative importance their time use patterns and health have on their overall life satisfaction.
Like other countries in the Western world, Canada's population is aging. For more than a decade, our society has been concerned with the negative aspects of population aging such as how to care for those who are old, or how to manage pension schemes for increasing numbers of retirees. Yet with the impending retirement of a large cohort of baby boomers, the attention has been turned to more positive aspects of aging.
The term 'aging well' now has become part of the language when thinking about older adults. Aging is seen as an ongoing process of managing the challenges associated with life transitions and with changing levels of personal resources such as health, wealth and social connections. Those who age well are able to find a balance or fit between their activities and these resources and to remain satisfied with their lives.
For women and men, and for younger and older seniors, the ideal balance may differ, though for both, health is a key resource. In fact, one of the key theories of aging well is that those who are in good health have the potential to have more choices over their daily activities and are more likely to feel satisfied with their lives. Active engagement is seen as another key component of aging well.
Time use patterns of older Canadians provide a useful window into understanding aging well. This study examines the main components of aging well-activity patterns and health of older Canadians. It considers several questions about aging well:1. What are the activity patterns of older Canadians? 2. What are the trends in activity patterns over time?
These two questions provide a picture of how older adults are engaged in various activities and whether levels of activity patterns change with age:3. What are the levels of health of older Canadians?4. How do levels of health change with age?
These two questions provide a picture of how the 'resource' of health may differ among older Canadians.
5. What is the relationship among activity patterns, health and life satisfaction?This final question provides insight into the relative importance of health and activity level in aging well.
Release date: 2006-07-26
10. On calibration estimation for quantiles Archived
Articles and reports: 12-001-X20060019255
Description:
In this paper, we consider the estimation of quantiles using the calibration paradigm. The proposed methodology relies on an approach similar to the one leading to the original calibration estimators of Deville and Särndal (1992). An appealing property of the new methodology is that it is not necessary to know the values of the auxiliary variables for all units in the population. It suffices instead to know the corresponding quantiles for the auxiliary variables. When the quadratic metric is adopted, an analytic representation of the calibration weights is obtained. In this situation, the weights are similar to those leading to the generalized regression (GREG) estimator. Variance estimation and construction of confidence intervals are discussed. In a small simulation study, a calibration estimator is compared to other popular estimators for quantiles that also make use of auxiliary information.
Release date: 2006-07-20

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Date modified:: 2024-06-03