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All (464) (460 to 470 of 464 results)

  • Articles and reports: 82-003-X19980034141
    Geography: Canada
    Description: This article describes rates of and times to revascularization procedures for heart attack patients.
    Release date: 1999-01-12

  • Articles and reports: 87-003-X19990014217
    Geography: Canada
    Description:

    From 1986 until very recently, international tourism experienced a period of rapid growth worldwide. In 1996, for all trips of one or more nights taken anywhere in the world there was sustained growth of 5.6 percent in arrivals and 8.2 percent in international tourism receipts as compared with 1995. These increases represented 595 million out-of-country trips taken around the world and $434 billion US in revenue.

    Release date: 1999-01-11

  • Articles and reports: 87-003-X19990014218
    Geography: Province or territory
    Description:

    Alone deck chair. A headstone that read J. Dawson. Not your usual tourism products, but then nothing about the Titanic was ordinary. The story of the ill-fated ship that sank in 1912 has been given new life with the release of the academy award winning movie, Titanic, in January 1998.

    Release date: 1999-01-11

  • Articles and reports: 87-003-X19990014219
    Geography: Canada
    Description:

    In the first half of 1998, Canada's travel account deficit reached a ten year low of $3 billion, down almost 18% from the same period in 1997. This is a positive sign. But, it should be recognized that Canada's travel account does not measure the financial health of its tourism industry. Canada's travel account simply measures the difference between earnings from visitors travelling in Canada and spending by Canadian residents travelling abroad.

    Release date: 1999-01-11
Data (145)

Data (145) (60 to 70 of 145 results)

  • Table: 94F0009X1996081
    Description:

    Series Description - The Dimensions Series (1996 Census of Population) provides an in-depth analysis of census data. More than 150 tables represent a variety of special interest subjects linking a number of Census variables. Statistical information is presented on themes of considerable public interest with some tables examining historical trends and other tables detailing significant sub-populations. Data for geographical levels of Canada, Provinces and Territories are most widely represented with some data tables produced at the Census Metropolitan Area level. The Portrait of Official Language Communities in Canada and the Portrait of Aboriginal Population of Canada contain some information at the community level.

    The data tables are grouped by common theme and are available on 7 different CD-ROMs:

    94F0004XCB96000 - Ethnocultural and Social Characteristics of the Canadian Population94F0005XCB96000 - Canadian Income and Earnings for 1990 and 199594F0006XCB96000 - Labour Force and Unpaid Work of Canadians94F0007XCB96000 - Place of Work of the Canadian Population94F0008XCB96000 - Canadian Demographic Characteristics (including language and mobility)94F0010XCB96000 - Portrait of Official Language Communities in Canada94F0011XCB96000 - Portrait of Aboriginal Population in Canada

    A detailed list of tables is included on each CD-ROM. Some tables show comparisons with data from earlier censuses to provide an historical perspective. It should be noted that the Dimension Series was not produced for the 1991 Census.

    Release date: 1999-02-15

  • Table: 94F0009X1996082
    Description:

    Series Description - The Dimensions Series (1996 Census of Population) provides an in-depth analysis of census data. More than 150 tables represent a variety of special interest subjects linking a number of Census variables. Statistical information is presented on themes of considerable public interest with some tables examining historical trends and other tables detailing significant sub-populations. Data for geographical levels of Canada, Provinces and Territories are most widely represented with some data tables produced at the Census Metropolitan Area level. The Portrait of Official Language Communities in Canada and the Portrait of Aboriginal Population of Canada contain some information at the community level.

    The data tables are grouped by common theme and are available on 7 different CD-ROMs:

    94F0004XCB96000 - Ethnocultural and Social Characteristics of the Canadian Population94F0005XCB96000 - Canadian Income and Earnings for 1990 and 199594F0006XCB96000 - Labour Force and Unpaid Work of Canadians94F0007XCB96000 - Place of Work of the Canadian Population94F0008XCB96000 - Canadian Demographic Characteristics (including language and mobility)94F0010XCB96000 - Portrait of Official Language Communities in Canada94F0011XCB96000 - Portrait of Aboriginal Population in Canada

    A detailed list of tables is included on each CD-ROM. Some tables show comparisons with data from earlier censuses to provide an historical perspective. It should be noted that the Dimension Series was not produced for the 1991 Census.

    Release date: 1999-02-15

  • Table: 94F0009X1996083
    Description:

    Series Description - The Dimensions Series (1996 Census of Population) provides an in-depth analysis of census data. More than 150 tables represent a variety of special interest subjects linking a number of Census variables. Statistical information is presented on themes of considerable public interest with some tables examining historical trends and other tables detailing significant sub-populations. Data for geographical levels of Canada, Provinces and Territories are most widely represented with some data tables produced at the Census Metropolitan Area level. The Portrait of Official Language Communities in Canada and the Portrait of Aboriginal Population of Canada contain some information at the community level.

    The data tables are grouped by common theme and are available on 7 different CD-ROMs:

    94F0004XCB96000 - Ethnocultural and Social Characteristics of the Canadian Population94F0005XCB96000 - Canadian Income and Earnings for 1990 and 199594F0006XCB96000 - Labour Force and Unpaid Work of Canadians94F0007XCB96000 - Place of Work of the Canadian Population94F0008XCB96000 - Canadian Demographic Characteristics (including language and mobility)94F0010XCB96000 - Portrait of Official Language Communities in Canada94F0011XCB96000 - Portrait of Aboriginal Population in Canada

    A detailed list of tables is included on each CD-ROM. Some tables show comparisons with data from earlier censuses to provide an historical perspective. It should be noted that the Dimension Series was not produced for the 1991 Census.

    Release date: 1999-02-15

  • Table: 94F0009X1996084
    Description:

    Series Description - The Dimensions Series (1996 Census of Population) provides an in-depth analysis of census data. More than 150 tables represent a variety of special interest subjects linking a number of Census variables. Statistical information is presented on themes of considerable public interest with some tables examining historical trends and other tables detailing significant sub-populations. Data for geographical levels of Canada, Provinces and Territories are most widely represented with some data tables produced at the Census Metropolitan Area level. The Portrait of Official Language Communities in Canada and the Portrait of Aboriginal Population of Canada contain some information at the community level.

    The data tables are grouped by common theme and are available on 7 different CD-ROMs:

    94F0004XCB96000 - Ethnocultural and Social Characteristics of the Canadian Population94F0005XCB96000 - Canadian Income and Earnings for 1990 and 199594F0006XCB96000 - Labour Force and Unpaid Work of Canadians94F0007XCB96000 - Place of Work of the Canadian Population94F0008XCB96000 - Canadian Demographic Characteristics (including language and mobility)94F0010XCB96000 - Portrait of Official Language Communities in Canada94F0011XCB96000 - Portrait of Aboriginal Population in Canada

    A detailed list of tables is included on each CD-ROM. Some tables show comparisons with data from earlier censuses to provide an historical perspective. It should be noted that the Dimension Series was not produced for the 1991 Census.

    Release date: 1999-02-15

  • Table: 94F0009X1996085
    Description:

    Series Description - The Dimensions Series (1996 Census of Population) provides an in-depth analysis of census data. More than 150 tables represent a variety of special interest subjects linking a number of Census variables. Statistical information is presented on themes of considerable public interest with some tables examining historical trends and other tables detailing significant sub-populations. Data for geographical levels of Canada, Provinces and Territories are most widely represented with some data tables produced at the Census Metropolitan Area level. The Portrait of Official Language Communities in Canada and the Portrait of Aboriginal Population of Canada contain some information at the community level.

    The data tables are grouped by common theme and are available on 7 different CD-ROMs:

    94F0004XCB96000 - Ethnocultural and Social Characteristics of the Canadian Population94F0005XCB96000 - Canadian Income and Earnings for 1990 and 199594F0006XCB96000 - Labour Force and Unpaid Work of Canadians94F0007XCB96000 - Place of Work of the Canadian Population94F0008XCB96000 - Canadian Demographic Characteristics (including language and mobility)94F0010XCB96000 - Portrait of Official Language Communities in Canada94F0011XCB96000 - Portrait of Aboriginal Population in Canada

    A detailed list of tables is included on each CD-ROM. Some tables show comparisons with data from earlier censuses to provide an historical perspective. It should be noted that the Dimension Series was not produced for the 1991 Census.

    Release date: 1999-02-15

  • Table: 94F0009X1996086
    Description:

    Series Description - The Dimensions Series (1996 Census of Population) provides an in-depth analysis of census data. More than 150 tables represent a variety of special interest subjects linking a number of Census variables. Statistical information is presented on themes of considerable public interest with some tables examining historical trends and other tables detailing significant sub-populations. Data for geographical levels of Canada, Provinces and Territories are most widely represented with some data tables produced at the Census Metropolitan Area level. The Portrait of Official Language Communities in Canada and the Portrait of Aboriginal Population of Canada contain some information at the community level.

    The data tables are grouped by common theme and are available on 7 different CD-ROMs:

    94F0004XCB96000 - Ethnocultural and Social Characteristics of the Canadian Population94F0005XCB96000 - Canadian Income and Earnings for 1990 and 199594F0006XCB96000 - Labour Force and Unpaid Work of Canadians94F0007XCB96000 - Place of Work of the Canadian Population94F0008XCB96000 - Canadian Demographic Characteristics (including language and mobility)94F0010XCB96000 - Portrait of Official Language Communities in Canada94F0011XCB96000 - Portrait of Aboriginal Population in Canada

    A detailed list of tables is included on each CD-ROM. Some tables show comparisons with data from earlier censuses to provide an historical perspective. It should be noted that the Dimension Series was not produced for the 1991 Census.

    Release date: 1999-02-15

  • Table: 94F0009X1996087
    Description:

    Series Description - The Dimensions Series (1996 Census of Population) provides an in-depth analysis of census data. More than 150 tables represent a variety of special interest subjects linking a number of Census variables. Statistical information is presented on themes of considerable public interest with some tables examining historical trends and other tables detailing significant sub-populations. Data for geographical levels of Canada, Provinces and Territories are most widely represented with some data tables produced at the Census Metropolitan Area level. The Portrait of Official Language Communities in Canada and the Portrait of Aboriginal Population of Canada contain some information at the community level.

    The data tables are grouped by common theme and are available on 7 different CD-ROMs:

    94F0004XCB96000 - Ethnocultural and Social Characteristics of the Canadian Population94F0005XCB96000 - Canadian Income and Earnings for 1990 and 199594F0006XCB96000 - Labour Force and Unpaid Work of Canadians94F0007XCB96000 - Place of Work of the Canadian Population94F0008XCB96000 - Canadian Demographic Characteristics (including language and mobility)94F0010XCB96000 - Portrait of Official Language Communities in Canada94F0011XCB96000 - Portrait of Aboriginal Population in Canada

    A detailed list of tables is included on each CD-ROM. Some tables show comparisons with data from earlier censuses to provide an historical perspective. It should be noted that the Dimension Series was not produced for the 1991 Census.

    Release date: 1999-02-15

  • Table: 94F0009X1996088
    Description:

    Series Description - The Dimensions Series (1996 Census of Population) provides an in-depth analysis of census data. More than 150 tables represent a variety of special interest subjects linking a number of Census variables. Statistical information is presented on themes of considerable public interest with some tables examining historical trends and other tables detailing significant sub-populations. Data for geographical levels of Canada, Provinces and Territories are most widely represented with some data tables produced at the Census Metropolitan Area level. The Portrait of Official Language Communities in Canada and the Portrait of Aboriginal Population of Canada contain some information at the community level.

    The data tables are grouped by common theme and are available on 7 different CD-ROMs:

    94F0004XCB96000 - Ethnocultural and Social Characteristics of the Canadian Population94F0005XCB96000 - Canadian Income and Earnings for 1990 and 199594F0006XCB96000 - Labour Force and Unpaid Work of Canadians94F0007XCB96000 - Place of Work of the Canadian Population94F0008XCB96000 - Canadian Demographic Characteristics (including language and mobility)94F0010XCB96000 - Portrait of Official Language Communities in Canada94F0011XCB96000 - Portrait of Aboriginal Population in Canada

    A detailed list of tables is included on each CD-ROM. Some tables show comparisons with data from earlier censuses to provide an historical perspective. It should be noted that the Dimension Series was not produced for the 1991 Census.

    Release date: 1999-02-15

  • Table: 94F0009X1996089
    Description:

    Series Description - The Dimensions Series (1996 Census of Population) provides an in-depth analysis of census data. More than 150 tables represent a variety of special interest subjects linking a number of Census variables. Statistical information is presented on themes of considerable public interest with some tables examining historical trends and other tables detailing significant sub-populations. Data for geographical levels of Canada, Provinces and Territories are most widely represented with some data tables produced at the Census Metropolitan Area level. The Portrait of Official Language Communities in Canada and the Portrait of Aboriginal Population of Canada contain some information at the community level.

    The data tables are grouped by common theme and are available on 7 different CD-ROMs:

    94F0004XCB96000 - Ethnocultural and Social Characteristics of the Canadian Population94F0005XCB96000 - Canadian Income and Earnings for 1990 and 199594F0006XCB96000 - Labour Force and Unpaid Work of Canadians94F0007XCB96000 - Place of Work of the Canadian Population94F0008XCB96000 - Canadian Demographic Characteristics (including language and mobility)94F0010XCB96000 - Portrait of Official Language Communities in Canada94F0011XCB96000 - Portrait of Aboriginal Population in Canada

    A detailed list of tables is included on each CD-ROM. Some tables show comparisons with data from earlier censuses to provide an historical perspective. It should be noted that the Dimension Series was not produced for the 1991 Census.

    Release date: 1999-02-15

  • Table: 94F0009X1996091
    Description:

    Series Description - The Dimensions Series (1996 Census of Population) provides an in-depth analysis of census data. More than 150 tables represent a variety of special interest subjects linking a number of Census variables. Statistical information is presented on themes of considerable public interest with some tables examining historical trends and other tables detailing significant sub-populations. Data for geographical levels of Canada, Provinces and Territories are most widely represented with some data tables produced at the Census Metropolitan Area level. The Portrait of Official Language Communities in Canada and the Portrait of Aboriginal Population of Canada contain some information at the community level.

    The data tables are grouped by common theme and are available on 7 different CD-ROMs:

    94F0004XCB96000 - Ethnocultural and Social Characteristics of the Canadian Population94F0005XCB96000 - Canadian Income and Earnings for 1990 and 199594F0006XCB96000 - Labour Force and Unpaid Work of Canadians94F0007XCB96000 - Place of Work of the Canadian Population94F0008XCB96000 - Canadian Demographic Characteristics (including language and mobility)94F0010XCB96000 - Portrait of Official Language Communities in Canada94F0011XCB96000 - Portrait of Aboriginal Population in Canada

    A detailed list of tables is included on each CD-ROM. Some tables show comparisons with data from earlier censuses to provide an historical perspective. It should be noted that the Dimension Series was not produced for the 1991 Census.

    Release date: 1999-02-15
Analysis (270)

Analysis (270) (0 to 10 of 270 results)

  • Articles and reports: 88F0006X1999010
    Description:

    This second edition of R&D tax treatment in Canada: a provincial comparison, uses a method developed by the Conference Board of Canada to compare the tax incentives to do research and development (R&D) in each of the provinces. The results contribute to the analysis of regional differences in science and technology activity in Canada, as part of the work of the Science, Innovation and Electronic Information Division of Statistics Canada.

    An example of a regional difference is the tax incentive to do R&D in a province. There is the federal Scientific Research and Experimental Development tax programme, which has regional variations. Six out of ten provinces have their own incentive programmes and tax rates which differ from province to province. The B-Index analysis of the Conference Board provides a means of comparing tax incentives and of providing an indicator.

    Release date: 1999-12-30

  • Articles and reports: 88F0006X1999008
    Description:

    This publication presents the national gross domestic expenditures on research and development (GERD) from 1988 to 1999 as well as the provincial GERD from 1988 to 1997. An additional series of tables showing research and development (R&D) expenditures at the national level in either science from 1963 to 1987, or at the provincial level from 1979 to 1987, may be obtained from the Science and Innovation Surveys Section, Science, Innovation and Electronic Information Division.

    Release date: 1999-12-24

  • Articles and reports: 88F0006X1999009
    Description:

    This working paper presents the estimation procedures used to calculate the research and development (R&D) expenditures in the higher education sector for the year 1979-80 to 1997-98.

    Release date: 1999-12-24

  • Articles and reports: 63F0002X1999027
    Description:

    Computer communications occur when someone connects a computer to a communications network to access information on the Internet, to send and receive e-mail, or to use electronic banking services. This article uses 1998 data to update previous estimates of the proportion of Canadian households regularly using computer communications, analyzing the relationships between usage and location of use, household income, and other demographic factors. The article also looks at the growth of household connectedness over the past year, as well as the time spent using computer communications from home for a variety of services that can be accessed through the Internet.

    Release date: 1999-12-24

  • Stats in brief: 88-001-X19990107930
    Description:

    This service bulletin presents the geographic distribution of federal government science and technologyexpenditures. Data on federal government expenditures on science and technology are found in Volume 23,No. 5 of this publication, released in October, 1999. In both this and the earlier bulletin, science and technology (S&T) expenditure is the sum of expenditures on research and development (R&D) and on related scientific activities (RSA).

    Release date: 1999-12-23

  • Stats in brief: 88-001-X19990097966
    Description:

    The statistics presented in this bulletin are derived from our latest survey of industrial research and development activities in Canada. The survey reports on the research and development spending intentions for 1999, the estimates for 1998 and the actual expenditures for 1997 of corporations performing research and development activities in Canada. In 1997, a decision was made to eliminate the short survey forms in favour of administrative data, in order to reduce the response burden.

    Release date: 1999-12-22

  • Articles and reports: 91-209-X19990004852
    Geography: Canada
    Description: Fifteen years ago in this series, A. Romaniuc published a comprehensive study of how fertility in Canada had evolved over the century. It described the phenomenal increase of fertility in the postwar period, resulting in the baby boom. With the largest cohorts ever known in Canada, the baby boomers, by their numbers alone, will have left their mark on Canada's social, economic and political structure throughout their life cycle.
    Release date: 1999-12-22

  • Articles and reports: 91-209-X19990004853
    Geography: Canada
    Description: At the beginning of this century, a Canadian male could expect to live an average of 47 years and a Canadian female, 50 years. At that time, barely 38% of males and 44% of females reached the respectable age of 65 years. They could then expect to live for roughly another decade.
    Release date: 1999-12-22

  • Articles and reports: 91-209-X19990004854
    Geography: Canada
    Description:

    As the century draws to a close, there are many topics of interest involving Canada's aboriginal peoples: self-government, land claims, the environment, the criminal justice system, urbanization, the labour market, education, etc. However, one topic receives little attention but could have a major impact on how the others will develop: the demographic growth of aboriginal populations.

    Release date: 1999-12-22

  • Articles and reports: 11F0019M1999138
    Geography: Canada
    Description:

    In this paper, we assemble data from several household surveys to document how pension coverage of young and older workers has evolved in Canada between the mid-1980s and the mid-1990s. Our main findings are the following. First, both administrative data from the Pension Plans in Canada (PPIC) database and data from household surveys show an increase in RPP coverage for women. In contrast, while PPIC data show a decrease in coverage for men, household surveys indicate no downward trend for males. Second, sample aggregates hide interesting differences within the population. We find that the pension coverage of young workers (aged 25-34) has declined relative to older workers (aged 35-54). Young males have experienced a decline in coverage while RPP coverage has remained fairly stable for older men. In contrast, pension coverage has remained fairly constant for young women but has risen substantially for older women. Third, the decline in unionism and shifts towards industries with low-coverage explain most of the decrease in coverage observed among young men. Fourth, the growth in older women's coverage appears to be the result of their greater propensity to be employed in highly paid/highly covered occupations.

    Release date: 1999-12-22
Reference (50)

Reference (50) (10 to 20 of 50 results)

  • Surveys and statistical programs – Documentation: 11-522-X19980015020
    Description:

    At the end of 1993, Eurostat lauched a 'community' panel of households. The first wave, carried out in 1994 in the 12 countries of the European Union, included some 7,300 households in France, and at least 14,000 adults 17 years or over. Each individual was then followed up and interviewed each year, even if they had moved. The individuals leaving the sample present a particular profile. In the first part, we present a sketch of how our sample evolves and an analysis of the main characteristics of the non-respondents. We then propose 2 models to correct for non-response per homogeneous category. We then describe the longitudinal weight distribution obtained from the two models, and the cross-sectional weights using the weight share method. Finally, we compare some indicators calculated using both weighting methods.

    Release date: 1999-10-22

  • Surveys and statistical programs – Documentation: 11-522-X19980015021
    Description:

    The U.S. Bureau of the Census implemented major changes to the design of the Survey of Income and Program Participation (SIPP) with the panel begun in 1996. The revised survey design emphasized longitudinal applications and the Census Bureau attempted to understand and resolve the seam bias common to longitudinal surveys. In addition to the substantive and administrative redesign of the survey, the Census Bureau is improving the data processing procedures which yield microdata files for the public to analyse. The wave-by-wave data products are being edited and imputed with a longitudinal element rather than cross-sectionally, carrying forward information from a prior wave that is missing in the current wave. The longitudinal data products will be enhanced, both by the redesigned survey and new processing procedures. Simple methods of imputing data over time are being replaced with more sophisticated methods that do not attenuate seam bias. The longitudinal sample is expanding to include more observations which were nonrespondents in one or more waves. Longitudinal weights will be applied to the file to support person-based longitudinal analysis for calendar years or longer periods of time (up to four years).

    Release date: 1999-10-22

  • Surveys and statistical programs – Documentation: 11-522-X19980015022
    Description:

    This article extends and further develops the method proposed by Pfeffermann, Skinner and Humphreys (1998) for the estimation of gross flows in the presence of classification errors. The main feature of that method is the use of auxiliary information at the individual level which circumvents the need for validation data for estimating the misclassification rates. The new developments in this article are the establishment of conditions for model identification, a study of the properties of a model goodness of fit statistic and modifications to the sample likelihood to account for missing data and informative sampling. The new developments are illustrated by a small Monte-Carlo simulation study.

    Release date: 1999-10-22

  • Surveys and statistical programs – Documentation: 11-522-X19980015023
    Description:

    The study of social mobility, between labour market statuses or between income levels, for example, is often based on the analysis of mobility matrices. When comparing these transition matrices, with a view to evaluating behavioural changes, one often forgets that the data derive from a sample survey and are therefore affected by sampling variances. Similarly, it is assumed that the responses collected correspond to the ' true value.'

    Release date: 1999-10-22

  • Surveys and statistical programs – Documentation: 11-522-X19980015024
    Description:

    A longitudinal study on a cohort of pupils in the secondary school has been conducted in an Italian region since 1986 in order to study the transition from school to working life. The information have been collected at every sweep by a mail questionnaire and, at the final sweep, by a face-to-face interview, where retrospective questions referring back to the whole observation period have been asked. The gross flows between different discrete states - still in the school system, in the labour force without a job, in the labour force with a job - may then be estimated both from prospective and retrospective data, and the recall effect may be evaluated. Moreover, the conditions observed by the two different techniques may be regarded as two indicators of the 'true' unobservable condition, thus leading to the specification and estimation of a latent class model. In this framework, a Markov chain hypothesis may be introduced and evaluated in order to estimate the transition probabilities between the states, once they are corrected or the classification errors. Since the information collected by mail show a given amount of missing data in terms of unit nonresponse, the 'missing' category is also introduced in the model specification.

    Release date: 1999-10-22

  • Surveys and statistical programs – Documentation: 11-522-X19980015025
    Description:

    The log-linear modelling of categorical longitudinal survey data on income is studied. An emphasis is on inference about change. Special attention is paid to modelling of longitudinal data from two waves. A small illustration is based on data from the Canadian Survey of Labour and Income Dynamics.

    Release date: 1999-10-22

  • Surveys and statistical programs – Documentation: 11-522-X19980015026
    Description:

    The purpose of the present study is to utilize panel data from the Current Population Survey (CPS) to examine the effects of unit nonresponse. Because most nonrespondents to the CPS are respondents during at least one month-in-sample, data from other months can be used to compare the characteristics of complete respondents and panel nonrespondents and to evaluate nonresponse adjustment procedures. In the current paper we present analyses utilizing CPS panel data to illustrate the effects of unit nonresponse. After adjusting for nonresponse, additional comparisons are also made to evaluate the effects of nonresponse adjustment. The implications of the findings and suggestions for further research are discussed.

    Release date: 1999-10-22

  • Surveys and statistical programs – Documentation: 11-522-X19980015027
    Description:

    The disseminated results of annual business surveys inevitably contain statistics that are changing. Since the economic sphere is increasingly dynamic, a simple difference of aggregates between n-l and n is no longer sufficient to provide an overall description of what has happened. The change calculation module in the new generation of annual business surveys divides overall change into various components (births, deaths, inter-industry migration) and calculates change on the basis of a constant field, assigning special importance to restructurings. The main difficulties lie in establishing subsamples, reweighting, calibrating according to calculable changes, and taking account of restructuring.

    Release date: 1999-10-22

  • Surveys and statistical programs – Documentation: 11-522-X19980015028
    Description:

    We address the problem of estimation for the income dynamics statistics calculated from complex longitudinal surveys. In addition, we compare two design-based estimators of longitudinal proportions and transition rates in terms of variability under large attrition rates. One estimator is based on the cross-sectional samples for the estimation of the income class boundaries at each time period and on the longitudinal sample for the estimation of the longitudinal counts; the other estimator is entirely based on the longitudinal sample, both for the estimation of the class boundaries and the longitudinal counts. We develop Taylor linearization-type variance estimators for both the longitudinal and the mixed estimator under the assumption of no change in the population, and for the mixed estimator when there is change.

    Release date: 1999-10-22

  • Surveys and statistical programs – Documentation: 11-522-X19980015029
    Description:

    In longitudinal surveys, sample subjects are observed over several time points. This feature typically leads to dependent observations on the same subject, in addition to the customary correlations across subjects induced by the sample design. Much research in the literature has focussed on modeling the marginal mean of a response as a function of covariates. Liang and Zeger (1986) used generalized estimating equations (GEE), requiring only correct specification of the marginal mean, and obtained standard errors of regression parameter estimates and associated Wald tests, assuming a "working" correlation structure for the repeated measurements on a sample subject. Rotnitzky and Jewell (1990) developed quasi-score tests and Rao-Scott adjustments to "working" quasi-score tests under marginal models. These methods are asymptotically robust to misspecification of the within-subject correlation structure, but assume independence of sample subjects which is not satisfied for complex longitudinal survey data based on stratified multi-stage sampling. We proposed asymptotically valid Wald and quasi-score tests for longitudinal survey data, using the Taylor Linearization and jackknife methods. Alternative tests, based on Rao-Scott adjustments to naive tests that ignore survey design features and on Bonferroni-t, are also developed. These tests are particularly useful when the effective degrees of freedom, usually taken as the total number of sample primary units (clusters) minus the number of strata, is small.

    Release date: 1999-10-22
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