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  • Articles and reports: 75F0002M1992005
    Description:

    In recent years a considerable amount of attention has been focused on what is known as the "seam" problem in surveys having a longitudinal design. This refers to the fact that the number of transitions or changes in status observed across the seam when the data for two consecutive reference periods are juxtaposed is considerably larger (so metimes, an order of magnitude larger) than the average number observed in the data reported for a single reference period.

    Response errors are the most probable cause of seam biases. For characteristics such as employment status or income recipiency, errors can be due to omissions or to misplacing events in time. However, standard explanations for response errors based on "forgetting theory" are not supported by the data. Results concerning proxy effects are mixed but generally show no clear association.

    Dependent interviewing (i.e., feeding back to respondents responses provided on a previous interview) would appear the most appropriate strategy for dealing with seam effects. However, not all feedback techniques will necessarily work. A comparison of two such techniques, one which failed to eliminate seam effects (SIPP) and one which was successful (LMAS) and which has also been successfully tested by SIPP, attempts to identify the key features required.

    The paper argues in closing that dependent interviewing should not be viewed as a necessary evil that is required for reducing seam biases but as an integral part of the interview process in longitudinal surveys.

    Release date: 2008-02-29

  • 22. Defining retirement Archived
    Articles and reports: 75-001-X200710213182
    Geography: Canada
    Description:

    Even though the retirement wave will have significant labour market consequences over the next 20 years, no regular statistics are produced on retirement or the retired. Part of the problem stems from lack of clear definitions. For some, retirement means complete withdrawal from the labour force while for others it entails part- or even full-time work. The article examines the challenges faced by statistical organizations in measuring retirement and offers several recommendations to inform a discussion for arriving at international standards.

    Release date: 2007-03-20

  • Articles and reports: 11-522-X20050019440
    Description:

    For a number of years, Statistics Canada has been taking incremental steps to improve its survey programs through the use of tax data substitution, content fine tuning and earlier data releases. The approach is to focus survey collection and analysis on the large, complex enterprises where tax data is insufficient to meet the needs of the Canadian statistical system.

    Release date: 2007-03-02

  • Articles and reports: 11-522-X20050019475
    Description:

    To determine and measure the impact of informativeness we compare design-based and model-based variances of estimated parameters, as well as the estimated parameters themselves, in a logistic model under the assumption that the postulated model is true. An approach for assessing the impact of informativeness is given. In order to address the additional complexity of the impact of informativeness on power, we propose a new approximation for a linear combination of non-central chi-square distributions, using generalized design effects. A large simulation study, based on generating a population under the postulated model, using parameter estimates derived from the NPHS, allows us to detect and to measure the informativeness, and to compare the robustness of studied approaches.

    Release date: 2007-03-02

  • Articles and reports: 11-522-X20050019599
    Description:

    Opening remarks

    Release date: 2007-03-02

  • Articles and reports: 11-522-X20050019600
    Description:

    Closing remarks

    Release date: 2007-03-02

  • Articles and reports: 11F0019M2006284
    Geography: Canada
    Description:

    The present review provides a description of various Canadian national survey data sets that could be used to examine issues related to child care use. National data sets dealing with patterns of employment, time use, family earnings, social support, and child, adolescent, or adult health measures were included. We conclude that numerous questions remain unanswered in terms of addressing the relationship between patterns of employment, use of child care, family roles and responsibilities, and associations with the health of families. Recommendations are made about information that has not been collected but may prove to be useful in addressing these issues. Moreover, we conclude that existing Canadian national survey data could be used to address several issues related to patterns of care use as well as the impact on children and families.

    Release date: 2006-06-19

  • Articles and reports: 88-003-X20060019109
    Geography: Canada
    Description:

    In mid-September, 2005 the Science, Innovation and Electronic Information Division (SIEID) at Statistics Canada hosted a seven-day working visit by 27 Chinese statisticians, sponsored by the International Research and Development Council (IRDC). This workshop involved presentations by both Canadian and Chinese statisticians on methods and experiences in their respective science and technology (S&T) statistics programs.

    Release date: 2006-02-27

  • Articles and reports: 11-522-X20040018654
    Description:

    In Australia, cultural considerations influence the statistical activity with regards to Indigenous population. The paper discusses survey designs, operations, estimation and dissemination.

    Release date: 2005-10-27

  • Articles and reports: 11-522-X20040018734
    Geography: Canada
    Description:

    The Ethnic Diversity Survey generated methodological challenges like choosing the sampling plan, developing the questionnaire, collecting the data, weighting the data and estimating the variance.

    Release date: 2005-10-27
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Analysis (61)

Analysis (61) (50 to 60 of 61 results)

  • Articles and reports: 88F0006X1999006
    Description:

    This study provides background information towards developing working definitions of e-commerce. In addition, through selected case studies it examines whether respondents could provide information for such measurements. The study distinguishes between e-commerce and e-business, the former being a sub-set of the latter and emphasizes computer-mediation as an important feature of this phenomenon. A definition of e-commerce is then proposed: "Transactions carried over computer-mediated channels that comprise the transfer of ownership or the entitlement to use tangible or intangible assets".

    Release date: 1999-08-20

  • Articles and reports: 82-003-X19980044511
    Geography: Canada
    Description:

    This article discusses some of the benefits and challenges of data from a longitudinal panel as exemplified by the National Population Health Survey (NPHS). An overview of content and collection methods, sample design, response rates, and some of the special methodological and operational approaches for this longitudinal survey.

    Release date: 1999-04-29

  • Surveys and statistical programs – Documentation: 12-001-X19980024351
    Description:

    To calculate price indexes, data on "the same item" (actually a collection of items narrowly defined) must be collected across time periods. The question arises whether such "quasi-longitudinal" data can be modeled in such a way as to shed light on what a price index is. Leading thinkers on price indexes have questioned the feasibility of using statistical modeling at all for characterizing price indexes. This paper suggests a simple state space model of price data, yielding a consumer price index that is given in terms of the parameters of the model.

    Release date: 1999-01-14

  • Articles and reports: 88F0006X1998008
    Description:

    This paper, Bibliometric analysis of scientific and technological research: a user's guide to the methodology, by Élaine Gauthier, provides an overview current usage of bibliometric methods and techniques, including an extensive bibliography. It also provides technical specifications on the database of Canadian authors that has been developed, with Statistics Canada support, by the Observatoire des Sciences et des Technologies.

    Release date: 1998-10-30

  • Surveys and statistical programs – Documentation: 12-001-X19980013913
    Description:

    Temporary mobility is hypothesized to contribute toward within-household coverage error since it may affect an individual's determination of "usual residence" - a concept commonly applied when listing persons as part of a household-based survey or census. This paper explores a typology of temporary mobility patterns and how they relate to the identification of usual residence. Temporary mobility is defined by the pattern of movement away from, but usually back to a single residence over a two-three month reference period. The typology is constructed using two dimensions: the variety of places visited and the frequency of visits made. Using data from the U.S. Living Situation Survey (LSS) conducted in 1993, four types of temporary mobility patterns are identified. In particular, two groups exhibiting patterns of repeat visit behavior were found to contain more of the types of people who tend to be missed during censuses and surveys. Log-linear modeling indicates spent away and demographic characteristics.

    Release date: 1998-07-31

  • Articles and reports: 61-532-X19970013495
    Description:

    Several months ago, I was in a restaurant in the Cotswolds in England. The proprietor indicated a gentleman across the room and said, "We have another North American diner, perhaps you know him." The gentleman was from Vancouver. And when the proprietor went to the gentleman from Vancouver and indicated me, I heard across the room, "Oh, the Americans--they're our favorite neighbors". I think the geographic implications of that were lost on the Cotswolds proprietor.

    Release date: 1998-02-02

  • Articles and reports: 61-532-X19970013496
    Description:

    Society is changing, its information needs are multiplying, and as a result, the National Systems of Information take advantage of the technology available and adjust their mechanisms and ways of generating statistical and geographical data so as to provide new products and services to effectively to meet these new requirements.

    Release date: 1998-02-02

  • Articles and reports: 61-532-X19970013497
    Description:

    The NAFTA is a trade agreement and it is only natural that people should start their questioning of it. There are a number of questions about trade in goods, services and foreign direct investments.

    Release date: 1998-02-02

  • Articles and reports: 61-532-X19970013501
    Description:

    Conventional models of physical depreciation only measure the quantity side of Fixed Capital Flows and Stocks (FCFAS). An additional weakness of these models is that the quantity values for all FCFAS are obtained by deflating all the items behind the FCFAS using only one deflator that of gross fixed capital formation. Furthermore, conventional models make arbitrary assumptions on both physical and economic depreciation. Because conventional models do not measure the price side of FCFAS, it is very difficult to fit the economic depreciation variable into the models; it is probably wrongly fitted into the models in all the cases.

    Release date: 1998-02-02

  • Articles and reports: 75F0002M1994007
    Description:

    This report is based on a presentation made to the Annual Research Conference of the U.S. Census Bureau in March 1994. It reviews some of the highlights of a year of testing for the Survey of Labour and Income Dynamics (SLID).

    Release date: 1995-12-30
Reference (2)

Reference (2) ((2 results))

  • Surveys and statistical programs – Documentation: 12-001-X19980024351
    Description:

    To calculate price indexes, data on "the same item" (actually a collection of items narrowly defined) must be collected across time periods. The question arises whether such "quasi-longitudinal" data can be modeled in such a way as to shed light on what a price index is. Leading thinkers on price indexes have questioned the feasibility of using statistical modeling at all for characterizing price indexes. This paper suggests a simple state space model of price data, yielding a consumer price index that is given in terms of the parameters of the model.

    Release date: 1999-01-14

  • Surveys and statistical programs – Documentation: 12-001-X19980013913
    Description:

    Temporary mobility is hypothesized to contribute toward within-household coverage error since it may affect an individual's determination of "usual residence" - a concept commonly applied when listing persons as part of a household-based survey or census. This paper explores a typology of temporary mobility patterns and how they relate to the identification of usual residence. Temporary mobility is defined by the pattern of movement away from, but usually back to a single residence over a two-three month reference period. The typology is constructed using two dimensions: the variety of places visited and the frequency of visits made. Using data from the U.S. Living Situation Survey (LSS) conducted in 1993, four types of temporary mobility patterns are identified. In particular, two groups exhibiting patterns of repeat visit behavior were found to contain more of the types of people who tend to be missed during censuses and surveys. Log-linear modeling indicates spent away and demographic characteristics.

    Release date: 1998-07-31
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