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Description:

The context of the discussion is the increasing incidence of international surveys, of which one is the International Tobacco Control (ITC) Policy Evaluation Project, which began in 2002. The ITC country surveys are longitudinal, and their aim is to evaluate the effects of policy measures being introduced in various countries under the WHO Framework Convention on Tobacco Control. The challenges of organization, data collection and analysis in international surveys are reviewed and illustrated. Analysis is an increasingly important part of the motivation for large scale cross-cultural surveys. The fundamental challenge for analysis is to discern the real response (or lack of response) to policy change, separating it from the effects of data collection mode, differential non-response, external events, time-in-sample, culture, and language. Two problems relevant to statistical analysis are discussed. The first problem is the question of when and how to analyze pooled data from several countries, in order to strengthen conclusions which might be generally valid. While in some cases this seems to be straightforward, there are differing opinions on the extent to which pooling is possible and reasonable. It is suggested that for formal comparisons, random effects models are of conceptual use. The second problem is to find models of measurement across cultures and data collection modes which will enable calibration of continuous, binary and ordinal responses, and produce comparisons from which extraneous effects have been removed. It is noted that hierarchical models provide a natural way of relaxing requirements of model invariance across groups.

Description:

Dependent interviewing (DI) is used in many longitudinal surveys to "feed forward" data from one wave to the next. Though it is a promising technique which has been demonstrated to enhance data quality in certain respects, relatively little is known about how it is actually administered in the field. This research seeks to address this issue through behavior coding. Various styles of DI were employed in the English Longitudinal Study of Ageing (ELSA) in January, 2006, and recordings were made of pilot field interviews. These recordings were analysed to determine whether the questions (particularly the DI aspects) were administered appropriately and to explore the respondent's reaction to the fed-forward data. Of particular interest was whether respondents confirmed or challenged the previously-reported information, whether the prior wave data came into play when respondents were providing their current-wave answers, and how any discrepancies were negotiated by the interviewer and respondent. Also of interest was to examine the effectiveness of various styles of DI. For example, in some cases the prior wave data was brought forward and respondents were asked to explicitly confirm it; in other cases the previous data was read and respondents were asked if the situation was still the same. Results indicate varying levels of compliance in terms of initial question-reading, and suggest that some styles of DI may be more effective than others.

Description:

In longitudinal surveys nonresponse often occurs in a pattern that is not monotone. We consider estimation of time-dependent means under the assumption that the nonresponse mechanism is last-value-dependent. Since the last value itself may be missing when nonresponse is nonmonotone, the nonresponse mechanism under consideration is nonignorable. We propose an imputation method by first deriving some regression imputation models according to the nonresponse mechanism and then applying nonparametric regression imputation. We assume that the longitudinal data follow a Markov chain with finite second-order moments. No other assumption is imposed on the joint distribution of longitudinal data and their nonresponse indicators. A bootstrap method is applied for variance estimation. Some simulation results and an example concerning the Current Employment Survey are presented.

Description:

Sample weights can be calibrated to reflect the known population totals of a set of auxiliary variables. Predictors of finite population totals calculated using these weights have low bias if these variables are related to the variable of interest, but can have high variance if too many auxiliary variables are used. This article develops an "adaptive calibration" approach, where the auxiliary variables to be used in weighting are selected using sample data. Adaptively calibrated estimators are shown to have lower mean squared error and better coverage properties than non-adaptive estimators in many cases.

Description:

We propose a method for estimating the variance of estimators of changes over time, a method that takes account of all the components of these estimators: the sampling design, treatment of non-response, treatment of large companies, correlation of non-response from one wave to another, the effect of using a panel, robustification, and calibration using a ratio estimator. This method, which serves to determine the confidence intervals of changes over time, is then applied to the Swiss survey of value added.

Description:

The analysis of stratified multistage sample data requires the use of design information such as stratum and primary sampling unit (PSU) identifiers, or associated replicate weights, in variance estimation. In some public release data files, such design information is masked as an effort to avoid their disclosure risk and yet to allow the user to obtain valid variance estimation. For example, in area surveys with a limited number of PSUs, the original PSUs are split or/and recombined to construct pseudo-PSUs with swapped second or subsequent stage sampling units. Such PSU masking methods, however, obviously distort the clustering structure of the sample design, yielding biased variance estimates possibly with certain systematic patterns between two variance estimates from the unmasked and masked PSU identifiers. Some of the previous work observed patterns in the ratio of the masked and unmasked variance estimates when plotted against the unmasked design effect. This paper investigates the effect of PSU masking on variance estimates under cluster sampling regarding various aspects including the clustering structure and the degree of masking. Also, we seek a PSU masking strategy through swapping of subsequent stage sampling units that helps reduce the resulting biases of the variance estimates. For illustration, we used data from the National Health Interview Survey (NHIS) with some artificial modification. The proposed strategy performs very well in reducing the biases of variance estimates. Both theory and empirical results indicate that the effect of PSU masking on variance estimates is modest with minimal swapping of subsequent stage sampling units. The proposed masking strategy has been applied to the 2003-2004 National Health and Nutrition Examination Survey (NHANES) data release.

Description:

The design of a stratified simple random sample without replacement from a finite population deals with two main issues: the definition of a rule to partition the population into strata, and the allocation of sampling units in the selected strata. This article examines a tree-based strategy which plans to approach jointly these issues when the survey is multipurpose and multivariate information, quantitative or qualitative, is available. Strata are formed through a hierarchical divisive algorithm that selects finer and finer partitions by minimizing, at each step, the sample allocation required to achieve the precision levels set for each surveyed variable. In this way, large numbers of constraints can be satisfied without drastically increasing the sample size, and also without discarding variables selected for stratification or diminishing the number of their class intervals. Furthermore, the algorithm tends not to define empty or almost empty strata, thus avoiding the need for strata collapsing aggregations. The procedure was applied to redesign the Italian Farm Structure Survey. The results indicate that the gain in efficiency held using our strategy is nontrivial. For a given sample size, this procedure achieves the required precision by exploiting a number of strata which is usually a very small fraction of the number of strata available when combining all possible classes from any of the covariates.

Description:

Optimum stratification is the method of choosing the best boundaries that make strata internally homogeneous, given some sample allocation. In order to make the strata internally homogenous, the strata should be constructed in such a way that the strata variances for the characteristic under study be as small as possible. This could be achieved effectively by having the distribution of the main study variable known and create strata by cutting the range of the distribution at suitable points. If the frequency distribution of the study variable is unknown, it may be approximated from the past experience or some prior knowledge obtained at a recent study. In this paper the problem of finding Optimum Strata Boundaries (OSB) is considered as the problem of determining Optimum Strata Widths (OSW). The problem is formulated as a Mathematical Programming Problem (MPP), which minimizes the variance of the estimated population parameter under Neyman allocation subject to the restriction that sum of the widths of all the strata is equal to the total range of the distribution. The distributions of the study variable are considered as continuous with Triangular and Standard Normal density functions. The formulated MPPs, which turn out to be multistage decision problems, can then be solved using dynamic programming technique proposed by Bühler and Deutler (1975). Numerical examples are presented to illustrate the computational details. The results obtained are also compared with the method of Dalenius and Hodges (1959) with an example of normal distribution.

Description:

This paper considers the optimum allocation in multivariate stratified sampling as a nonlinear matrix optimisation of integers. As a particular case, a nonlinear problem of the multi-objective optimisation of integers is studied. A full detailed example including some of proposed techniques is provided at the end of the work.

Description:

The present work illustrates a sampling strategy useful for obtaining planned sample size for domains belonging to different partitions of the population and in order to guarantee the sampling errors of domain estimates be lower than given thresholds. The sampling strategy that covers the multivariate multi-domain case is useful when the overall sample size is bounded and consequently the standard solution of using a stratified sample with the strata given by cross-classification of variables defining the different partitions is not feasible since the number of strata is larger than the overall sample size. The proposed sampling strategy is based on the use of balanced sampling selection technique and on a GREG-type estimation. The main advantages of the solution is the computational feasibility which allows one to easily implement an overall small area strategy considering jointly the sampling design and the estimator and improving the efficiency of the direct domain estimators. An empirical simulation on real population data and different domain estimators shows the empirical properties of the examined sample strategy.

Description:

This publication presents quarterly information on Canada's National Income and Expenditure Accounts (NIEA), 1947-2008. It contains data on gross domestic product (GDP) by income and by expenditure, saving and investment, borrowing and lending of each of four broad sectors of the economy: (i) persons and unincorporated businesses, (ii) corporate and government business enterprises, (iii) governments and (iv) non-residents. Information is also provided for selected subsectors. The publication begins with an analysis of the economic developments in the most recent quarter. Some issues also contain more technical articles explaining national accounts methodology or analysing a particular aspect of the economy. The publication also includes a glossary, and is no longer being released.

Description:

The tables in the topic 'Labour' present data on the paid work of the Canadian workforce, including detailed industry and occupation data, class of worker, and work activity during the reference year. The census is the only source of data covering the entire labour market, including Indian reserves, overseas households, and all provinces and territories.

This topic also presents data on the unpaid work of the Canadian workforce, including unpaid household work, unpaid child care, and unpaid senior care. These data, together with information on paid work, provide a more complete picture of the work activities of all Canadians.

Description:

The tables in the topic "Income and earnings" present data on the income of Canadian individuals, families, and households in the year 2005, including the composition of income, and data that serve to measure low income, known as the low income cut-off (LICO). The data also include the household incomes of Canadians by family type, age, and geography, as well as the household incomes of certain population groups (e.g., immigrants).

The composition of income includes earnings, income from government sources, and investments.

Description:

Data for Canada, provinces, territories, census divisions, census subdivisions and dissemination areas are shown in this table.

This table is part of the topic 'Labour', which presents data on the paid work of the Canadian workforce, including detailed industry and occupation data, class of worker, and work activity during the reference year. The census is the only source of data covering the entire labour market, including Indian reserves, overseas households, and all provinces and territories.

This topic also presents data on the unpaid work of the Canadian workforce, including unpaid household work, unpaid child care, and unpaid senior care. These data, together with information on paid work, provide a more complete picture of the work activities of all Canadians.

It is possible to subscribe to all the day-of-release topic bundles. Refer to Catalogue no. 97-569-XCB for more information.

Description:

Data for Canada, provinces, territories, census divisions, census subdivisions and dissemination areas are shown in this table.

This table is part of the topic 'Income and earnings,' which presents data on the income of Canadian individuals, families, and households in the year 2005, including the composition of income, and data that serve to measure low income, known as the low income cut-off (LICO). The data also include the household incomes of Canadians by family type, age, and geography, as well as the household incomes of certain population groups (e.g., immigrants).

The composition of income includes earnings, income from government sources, and investments.

It is possible to subscribe to all the day-of-release bundles. Refer to Catalogue no. 97-569-XCB for more information.

Description:

A series of supporting data tables accompanies the Inuit analytical article from the 2006 Aboriginal Peoples Survey (APS). These tables provide data at the national level, for each of the four Inuit regions (Nunatsiavut, Nunavik, Nunavut and the Inuvialuit region), along with data for Inuit outside these regions for major themes covered in the analytical article. Data for the Inuit identity population aged 15 and over are provided for: Participation in harvesting activities; diagnosed with arthritis/rheumatism, high blood pressure, asthma, stomach problems or intestinal ulcers, heart problems, tuberculosis and diabetes; smoking status; self-rated health status and; reasons for not completing elementary or secondary school. For Inuit children aged 6 to 14, tables include: contact with a pediatrician, general practitioner or family physician in past 12 months; contact with another medical specialist and; food insecurity.

Description:

This publication presents early estimates of mineral production by class and by province, quantities and values.

Description:

This article profiles manure production in Canada and maps manure production by sub-sub-drainage area for 2006.

Description:

This new product will present data for specific census topics and population groups according to selected demographic, cultural, and socio-economic characteristics. These detailed 'profile-type' tables expand the analytical depth of basic census information.

Description:

Data for Canada, provinces and territories are shown in this table.

This table is part of the topic 'Income and earnings,' which presents data on the income of Canadian individuals, families, and households in the year 2005, including the composition of income, and data that serve to measure low income, known as the low income cut-off (LICO). The data also include the household incomes of Canadians by family type, age, and geography, as well as the household incomes of certain population groups (e.g., immigrants).

The composition of income includes earnings, income from government sources, and investments.

It is possible to subscribe to all the day-of-release bundles. Refer to Catalogue no. 97-569-XCB for more information.

This table is available free on the Internet, Catalogue no. 97-563-XWE2006008.

Description:

The recent economic boom in the Canadian province of Alberta provides an ideal "natural experiment" to examine immigrants' responses to a strong labour demand outside major metropolitan centres. The key finding of our study, which is based on a unique dataset that combines administrative and immigrant records, is that not only did immigrants respond to the recent economic boom in Alberta, but they responded generally more strongly than non-immigrants. We find, however, a great deal of heterogeneity in the magnitude of the response across different regions and for different categories of immigrants.

Description:

In this bulletin, we document the rural-urban differences in population age structure in terms of: the share of the total population that is senior; the rate of aging of the population in terms of two measures: the growth in the share of the population that is senior and the growth in the number of seniors; the number of communities that are aging by each of these measures; and selected characteristics of the aging communities as compared to communities that are not aging.

Description:

The Internet's rapid and profound entry into our lives quite understandably makes people wonder how, both individually and collectively, we have been affected by it. When major shifts in technology use occur, utopian and dystopian views of their impact on society often abound, reflecting their disruptiveness and people's concerns. Given its complex uses, the Internet, both as a technology and as an environment, has had both beneficial and deleterious effects. Above all, though, it has had transformative effects.

Are Canadians becoming more isolated, more reclusive and less integrated in their communities as they use the Internet? Or, are they becoming more participatory and more integrated in their communities? In addition, do these communities still resemble traditional communities, or are they becoming more like social networks than cohesive groups?

To address these questions, this article organizes, analyzes and presents existing Canadian evidence. It uses survey results and research amassed by Statistics Canada and the Connected Lives project in Toronto to explore the role of the Internet in social engagement and the opportunities it represents for Canadians to be active citizens. It finds that Internet users are at least as socially engaged as non-users. They have large networks and frequent interactions with friends and family, although they tend to spend somewhat less in-person time and, of course, more time online. An appreciable number of Internet users are civically and politically engaged, using the Internet to find out about opportunities and make contact with others.

Description: The Connectedness series publishes analytical studies as well as research reports in the broad area of connectedness. This includes the industrial areas of telecommunications, broadcasting, computer services and Internet Service Providers as well as cross economy activities such as the Internet and electronic commerce. It offers a statistical perspective in these emerging phenomena that are changing the economic and societal landscape of the country.

All papers are subject to peer and institutional review as well as review by subject matter experts, as necessary.

Description:

Using data from the 2006 Census of Population and self-reported data from the 2004 General Social Survey (GSS) on victimization, this profile examines certain socio-demographic and economic characteristics of immigrants in Canada followed by an analysis of the rates and characteristics of violent crimes involving immigrant victims. It also provides information on immigrants perceptions of safety, of the criminal justice system and of discrimination.

Description:

This report presents some initial findings from the 2006 Aboriginal Peoples Survey for Inuit adults (aged 15 and over) and children (aged 6-14). A determinant of health framework is used. Information on health status is provided through data on self-reported health and chronic conditions. Other factors such as access to health care, smoking, formal education experiences, housing, participation in harvesting activities and country food consumption are examined. Data are shown for Inuit nationally, for each of the four Inuit regions across Inuit Nunaat (the Inuit homeland), and for Inuit living in southern Canada. Some comparisons are made with the total Canadian population and, on occasion, changes since 2001 are examined.

Description:

The objective of this working paper is to document the structure and trends for the rural population of Canada, using three major definitions of rural Canada: the "census rural" definition, the "rural and small town" definition and the OECD "predominantly rural region" definition. This analysis is entirely based on data from the Census of Population from 1981 to 2006 (Statistics Canada, 2007).

Description:

This article offers a brief demographic and socio-economic profile of Inuit, based on results of the 2006 Census of Population. Inuit living in Inuit Nunaat (Inuit homeland) are compared to those living outside Inuit Nunaat. Direct links are provided to Statistics Canada website containing a series of data tables for readers wanting more detailed information.

Description:

This article is adapted from the initial analytical report on the 2006 Aboriginal Children's Survey (ACS). The ACS was designed to provide a picture of the early development of Aboriginal children under age 6 and the social and living conditions in which they are learning and growing. The focus of this article is the family, community and traditional cultural activities of First Nations children living off reserve, Métis children, and Inuit children.

Description:

This paper compares the productivity growth of a set of Canadian and U.S. regulated industries. Using data from Statistics Canada's KLEMS database and the U.S. Bureau of Economic Analysis, the paper examines productivity growth in transportation services (which includes air and rail), broadcasting and telecommunications, and financial services (which includes financial intermediation and insurance), over the period from 1977 to 2003. The majority of these provide the foundational networks on which other industries rely. These sectors were quite heavily regulated in Canada at the beginning of the period of study (1977), experienced partial deregulation during the period and still faced various types of regulation at the end (2003). Deregulation also occurred in the United States, but regulation has generally been less restrictive there over most of the period.

The evidence shows that many of the Canadian industries that underwent deregulation experienced faster labour productivity growth and multifactor productivity growth than did the aggregate Canadian business sector and had similar or higher productivity growth than did their counterparts in the United States over the 1977-to-2003 period. Those industries include rail transportation, broadcasting and telecommunications, financial intermediation and insurance carriers. The airline industry had slower productivity growth in Canada than in the United States over the 1977-to-2003 period.

Description:

These guides provide information that enables users to effectively use, apply and interpret data from the 2006 Census. Each guide contains definitions and explanations on census concepts. Additional information will be included for specific variables to help general users better understand the concepts and questions used in the census.

Description:

These guides provide information that enables users to effectively use, apply and interpret data from the 2006 Census. Each guide contains definitions and explanations on census concepts, data quality and historical comparability. Additional information will be included for specific variables to help general users better understand the concepts and questions used in the census.

Description:

This guide focuses on the following demographic variables: First official language spoken, Home language, Knowledge of non-official languages, Knowledge of official languages, Language of work, and Mother tongue.

Provides information that enables users to effectively use, apply and interpret data from the 2006 Census. Each guide contains definitions and explanations on census concepts. Additional information will be included for specific variables to help general users better understand the concepts and questions used in the census.

Description:

This guide focuses on the following demographic variables: Place of birth, Generation status, Citizenship and Immigration.

Provides information that enables users to effectively use, apply and interpret data from the 2006 Census. Each guide contains definitions and explanations on census concepts. Additional information will be included for specific variables to help general users better understand the concepts and questions used in the census.