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This release provides data on the research and development activities of the private non-profit sector. Although the contribution of this sector to the national research and development effort is small in dollar terms, its impact, particularly in the university sector, is significant.Questionnaires were mailed to 95 private non-profit organizations thought to be supporting research and development activities.Twenty-two organizations reported performing research and development.

This compendium of vital statistics includes summary data on births, deaths, marriages and divorces. The introduction covers the data sources, data quality, and methods pertaining to each event, and includes a glossary defining the terms used. The first chapter is a brief overview of vital statistics for 1996. Subsequent chapters treat marriage, divorce, birth, fetal and infant mortality, total mortality, causes of death, vital statistics by census division, and international comparisons. Most charts and tables show Canada data for 1986 though 1996, while the charts and tables for causes of death show Canada data for 1979 through1996. Data for the provinces and territories are usually shown for 1995 and 1996. Appendices include population denominator data, age-standardized mortality rate (ASMR) calculation methods, and leading causes of death methodology.

The Canadian Centre for Justice Statistics has prepared a report on the use of remand in Canada. Remand refers to persons who have been charged with an offence and ordered by the court to custody while awaiting a further court appearance. This report uses data from the Adult Correctional Services (ACS) survey to assess the trends in remand admissions, sentence lengths, and average daily counts of remand inmates in provincial/territorial correctional facilities between 1988-89 and 1997-98. Characteristics of remand inmates (e.g., age, gender, marital status, level of education, employment), offences and criminal history were studied using data from the One-Day Snapshot report (a census of inmates on-register in adult correctional facilities on midnight Saturday October 5th 1996). Characteristics and offences of youth on remand in 1997-98 were also examined using data from the Youth Custody and Community Services (YCCS) survey. Trends in the average counts of youth on remand between 1988-89 and 1997-98 are presented using data from the Corrections Key Indicator Report. Appendices include graphs of admissions and average daily counts for each province and territory.

This paper examines the factors contributing to innovative activity in the Canadian food processing sector. The study first focuses on the importance of research and development activity and advanced business practices used by production and engineering departments. Second, it examines the extent to which larger firm size and less competition serve to stimulate competition-the so-called Schumpeterian hypothesis. Third, the effect of the nationality of a firm on innovation is investigated. Finally, industry effects are examined.

The paper finds that business practices are significantly related to the probability that a firm is innovative. This is also the case for R&D. Size effects are significant, particularly for process innovations. Elsewhere, their effect is greatly diminished once business practices are included. Foreign ownership is significant only for process innovations and not for product innovations. Competition matters, more so for product than for process innovations. Establishments in the 'other' food products industry tend to lead when it comes to innovation, whereas fish product plants tend to lag.

International tourism is one of the fastest-growing industries in the world. Over the past ten years, the number of international arrivals at national borders has increased at an average annual rate of 5.2%, reaching 611 million in 1997.

Canada's economy was booming in 1997. The economy, as measured by the Gross Domestic Product (GDP), grew 3.8% in 1997, its best performance since 1994 and the second best this decade.

Canada hosted over 45 million international visitors in 1997, the highest annual level in the 25 years that travel data have been collected.

Vast distances, dependence on trade and low population density (compared to the United States and Europe) make transportation vitally important in Canada. The nation's travel and tourism patterns, both domestically and internationally, are a mirror image of Canadian business, lifestyles and quality of life.

This chapter describes four specific industry sectors : accomodation services, restaurant services, travel agencies and tour operators, and Canadian tourist attractions.

Tourism affects a number of industries. Hotels, travel agencies, airlines and restaurants are to varying degrees affected by tourism. Thus, tourism is not just one industry, but an amalgam of several, and the tourism phenomenon raises a number of questions because of its complexity, its various ramifications and its scope.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

This report measures the scope of violent crime by female and male youths at the national and provincial levels and in selected metropolitan areas, determines the degree of change observed between 1988 and 1998, identifies the characteristics of violent crime by youths and compares it to that of adults, and creates a portrait of violent young offenders (male and female) and their victims. To this end, police-reported data from the Uniform Crime Reporting (UCR) Survey have been used.

This report presents an update to the results from the Survey of Labour and Income Dynamics (SLID) and the Survey of Consumer Finances (SCF) for a variety of important time series and it compares the estimates from the two sources.

This article investigates the extent to which factors not previously explored in the Canadian context account for wage differences between men and women. It uses data from the Survey of Labour and Income Dynamics (SLID).

The food-processing industry benefits from a wide a range of new advanced technologies. Technological advances include computer-based information and control systems, as well as sophisticated processing and packaging methods that enhance product quality, improve food safety and reduce costs. Continuous quality improvement and benchmarking are examples of related business practices.

This study examines the use of advanced technologies in the food-processing industry. It focuses not just on the incidence and intensity of use of these new technologies but also on the way technology relates to overall firm strategy. It also examines how technology use is affected by selected industry structural characteristics and how the adoption of technologies affects the performance of firms. It considers as well how the environment influences technological change. The nature and structure of the industry are shown to condition the competitive environment, the business strategies that are pursued, product characteristics and the role of technology.

Firms make strategic choices in light of technological opportunities and the risks and opportunities provided by their competitive environments. They implement strategies through appropriate business practices and activities, including the development of core competencies in the areas of marketing, production and human resources, as well as technology. Firms that differ in size and nationality choose to pursue different technological strategies. This study focuses on how these differences are reflected in the different use of technology for large and small establishments, for foreign and domestic plants and for plants in different industries.

This paper outlines the growth in advanced technology use that has taken place over the last decade in Canadian manufacturing establishments. It presents the percentage of plants that use any one of the advanced technologies studied and how this has changed between 1989 and 1998. It also investigates how growth rates in the 1990s have varied across different technologies in specific functional areas, such as design and engineering, fabrication, communications, and integration and control. In an attempt to discover how changes in technology use are related to certain plant characteristics, the paper then investigates whether the growth in technology use varies across plants that differ by size, nationality and industry. Multivariate analysis is used to investigate the joint effects of plant size, foreign ownership and industry on the incidence of technology adoption and how these effects have changed over the last decade.

This Juristat examines how much is being spent to operate the justice system in Canada and how many people are working in the system. Trends in spending and personnel are discussed for policing, courts, legal aid, criminal prosecutions, and corrections. Data for the report come from several sources, including the Canadian Centre for Justice Statistics' resource, expenditure and personnel surveys, Statistics Canada's Financial Management System, and Justice Canada. Depending on the source, the data cover the period up to 1996/97 or 1997/98.

Low income cut-offs (LICOs) are intended to convey the income level at which a family may be in straitened circumstances because it has to spend a greater portion of its income on the basics (food, clothing and shelter) than does the average family of similar size. The LICOs vary by family size and by size of community.

This publication provides a brief explanation of how the LICOs are derived and updated annually. In addition, it provides on a historical basis, LICOs for different family sizes by size of area of residence. LICOs are calculated based on the spending patterns of families on basic 'necessities' - food, shelter and clothing - as collected from the Survey of Household Spending (formerly referred to as the Family Expenditure Survey (FAMEX)).

This article examines the family circumstances of 8- to 11-year-old youngsters to assess the link between behaviour and certain family characteristics.

This article provides information about Internet usage by Canadian households at the end of the 20th century.

This article looks at those Canadians who moved either to provide care to someone with a long-term health problem or to be looked after by someone else.

Series description

This series includes five general reference products - the Preview of Products and Services; the Catalogue; the Dictionary; the Handbook and the Technical Reports - as well as geography reference products - GeoSuite and Reference Maps.

Product description

Technical Reports examine the quality of data from the 1996 Census, a large and complex undertaking. While considerable effort was taken to ensure high quality standards throughout each step, the results are subject to a certain degree of error. Each report looks at the collection and processing operations and presents results from data evaluation, as well as notes on historical comparability.

Technical Reports are aimed at moderate and sophisticated users but are written in a manner which could make them useful to all census data users. Most of the technical reports have been cancelled, with the exception of Age, Sex, Marital Status and Common-law Status, Coverage and Sampling and Weighting. These reports will be available as bilingual publications as well as being available in both official languages on the Internet as free products.

This report deals with coverage errors, which occured when persons, households, dwellings or families were missed by the 1996 Census or enumerated in error. Coverage errors are one of the most important types of error since they affect not only the accuracy of the counts of the various census universes but also the accuracy of all of the census data describing the characteristics of these universes. With this information, users can determine the risks involved in basing conclusions or decisions on census data.

This report deals with sampling and weighting, a process whereby certain characteristics are collected and processed for a random sample of dwellings and persons identified in the complete census enumeration. Data for the whole population are then obtained by scaling up the results for the sample to the full population level. The use of sampling may lead to substantial reductions in costs and respondent burden, or alternatively, can allow the scope of a census to be broadened at the same cost.

Series Description:

This series includes five general reference products - the Preview of Products and Services; the Catalogue; the Dictionary; the Handbook and Technical Reports - as well as two geography reference products - GeoSuite and Reference Maps.

Product Description:

The 1996 Census Dictionary provides detailed information on all of the concepts, variables and geographic elements of the 1996 Census. Information provided for each variable includes a definition, the associated census questions, applicable response categories or classifications and special remarks, namely on historical aspects. Users should make use of this edition of the 1996 Census Dictionary for the most up-to-date information. This final edition is also available on our web site as a free downloadable product.

The National Population Health Survey (NPHS) is a family of surveys with multiple objectives, one of which is to provide information on a panel of people who will be followed over time to reflect the dynamic process of health and illness. Data for the first cycle of the NPHS - Households Survey were collected from June 1994 to June 1995, and were released in September 1995. Data for the second cycle were collected from June 1996 to August 1997. One of the primary outputs for the second cycle is a longitudinal master file. This paper will describe six major strategies that were developed to process the longitudinal master file.

In 1994, Statistics Canada introduced a new longitudinal social survey that collects information from about 23,000 children spread over 13,500 households. The objective of the National Longitudinal Survey of Children and Youth is to measure the development and well being of children until they reach adulthood. To this end, the survey gathers together information about the child, parents, neighbourhood as well as family and school environment. As a consequence, the data collected for each child, is provided by several respondents, from parents to teachers, a situation which contributes to an increased disclosure risk. In order to reach a balance between confidentiality and the analytical value of released data, the survey produces three different microdata files with more or less information. The master file that contains all the information is only available by means of remote access. Hence, researchers do not have direct access to the data, but send their request in the form of software programs that are submitted by Statistics Canada staff. The results are then vetted for confidentiality and sent back to the researchers. The presentation will be devoted to the various disclosure risks of such a survey and to the tools used to reduce those risks.

In epidemiology analysis of longitudinal data is commonly accepted as providing the most robust measures of association between putative risk and selected outcomes such as death or cancer. SMARTIE is a SAS application for efficient analysis of longitudinal data. Based on person days at risk, it can handle multiple exits from and re-entries to risk, and derives outcome measures such as survival rates. Standardised Mortality Ratios (SMRs) and Cancer Incidence Ratios (SIRs). Summary data can be produced in a format easily ported to any modelling package such as Stats 5.0. We discuss the background to its development, the overall program structure, its command language, and finally we say something about the organization of outputs. Findings from survival studies using the Longitudinal Study of the Office for National Statistics (ONS) are used to demonstrate features of SMARTIE. This study is based on one per cent of the population of England and Wales. It is continually updated with the addition of new members and with information from birth, death and cancer records, and from the census.

Models for fitting longitudinal binary responses are explored using a panel study of voting intentions. A standard repeated measures multilevel logistic model is shown inadequate due to the presence of a substantial proportion of respondents who maintain a constant response over time. A multivariate binary response model is shown a better fit to the data.

Longitudinal studies with repeated observations on individuals permit better characterizations of change and assessment of possible risk factors, but there has been little experience applying sophisticated models for longitudinal data to the complex survey setting. We present results from a comparison of different variance estimation methods for random effects models of change in cognitive function among older adults. The sample design is a stratified sample of people 65 and older, drawn as part of a community-based study designed to examine risk factors for dementia. The model summarizes the population heterogeneity in overall level and rate of change in cognitive function using random effects for intercept and slope. We discuss an unweighted regression including covariates for the stratification variables, a weighted regression, and bootstrapping; we also did preliminary work into using balanced repeated replication and jackknife repeated replication.

This paper presents a method for handling longitudinal data in which individuals belong to more than one unit at a higher level, and also where there is missing information on the identification of the units to which they belong. In education, for example, a student might be classified as belonging sequentially to a particular combination of primary and secondary school, but for some students, the identity of either the primary or secondary school may be unknown. Likewise, in a longitudinal study, students may change school or class from one period to the next, so 'belonging' to more than one higher level unit. The procedures used to model these stuctures are extensions of a random effects cross-classified multilevel model.

The British Labour Force Survey (LFS) is a quarterly household survey with a rotating sample design that can potentially be used to produce longitudinal data, including estimates of labour force gross flows. However, these estimates may be biased due to the effect of non-response. Weighting adjustments are a commonly used method to account for non-response bias. We find that weighting may not fully account for the effect of non-response bias because non-response may depend on the unobserved labour force flows, i.e., the non-response is non-ignorable. To adjust for the effects of non-ignorable non-response, we propose a model for the complex non-response patterns in the LFS which controls for the correlated within-household non-response behaviour found in the survey. The results of modelling suggest that non-response may be non-ignorable in the LFS, causing the weighting estimates to be biased.