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  • Articles and reports: 11-522-X201300014255
    Description:

    The Brazilian Network Information Center (NIC.br) has designed and carried out a pilot project to collect data from the Web in order to produce statistics about the webpages’ characteristics. Studies on the characteristics and dimensions of the web require collecting and analyzing information from a dynamic and complex environment. The core idea was collecting data from a sample of webpages automatically by using software known as web crawler. The motivation for this paper is to disseminate the methods and results of this study as well as to show current developments related to sampling techniques in a dynamic environment.

    Release date: 2014-10-31

  • Surveys and statistical programs – Documentation: 11-522-X201300014260
    Description:

    The Survey of Employment, Payrolls and Hours (SEPH) produces monthly estimates and determines the month-to-month changes for variables such as employment, earnings and hours at detailed industrial levels for Canada, the provinces and territories. In order to improve the efficiency of collection activities for this survey, an electronic questionnaire (EQ) was introduced in the fall of 2012. Given the timeframe allowed for this transition as well as the production calendar of the survey, a conversion strategy was developed for the integration of this new mode. The goal of the strategy was to ensure a good adaptation of the collection environment and also to allow the implementation of a plan of analysis that would evaluate the impact of this change on the results of the survey. This paper will give an overview of the conversion strategy, the different adjustments that were made during the transition period and the results of various evaluations that were conducted. For example, the impact of the integration of the EQ on the collection process, the response rate and the follow-up rate will be presented. In addition, the effect that this new collection mode has on the survey estimates will also be discussed. More specifically, the results of a randomized experiment that was conducted in order to determine the presence of a mode effect will be presented.

    Release date: 2014-10-31

  • Articles and reports: 11-522-X201300014287
    Description:

    The purpose of the EpiNano program is to monitor workers who may be exposed to intentionally produced nanomaterials in France. This program is based both on industrial hygiene data collected in businesses for the purpose of gauging exposure to nanomaterials at workstations and on data from self-administered questionnaires completed by participants. These data will subsequently be matched with health data from national medical-administrative databases (passive monitoring of health events). Follow-up questionnaires will be sent regularly to participants. This paper describes the arrangements for optimizing data collection and matching.

    Release date: 2014-10-31

  • Articles and reports: 11-522-X200800010946
    Description:

    In the mid 1990s the first question testing unit was set-up in the UK Office for National Statistics (ONS). The key objective of the unit was to develop and test the questions and questionnaire for the 2001 Census. Since the establishment of this unit the area has been expanded into a Data Collection Methodology (DCM) Centre of Expertise which now sits in the Methodology Directorate. The DCM centre has three branches which support DCM work for social surveys, business surveys, the Census and external organisations.

    In the past ten years DCM has achieved a variety of things. For example, introduced survey methodology involvement in the development and testing of business survey question(naire)s; introduced a mix-method approach to the development of questions and questionnaires; developed and implemented standards e.g. for the 2011 census questionnaire & showcards; and developed and delivered DCM training events.

    This paper will provide an overview of data collection methodology at the ONS from the perspective of achievements and challenges. It will cover areas such as methods, staff (e.g. recruitment, development and field security), and integration with the survey process.

    Release date: 2009-12-03

  • Articles and reports: 11-522-X200800010954
    Description:

    Over the past year, Statistics Canada has been developing and testing a new way to monitor the performance of interviewers conducting computer-assisted personal interviews (CAPI). A formal process already exists for monitoring centralized telephone interviews. Monitors listen to telephone interviews as they take place to assess the interviewer's performance using pre-defined criteria and provide feedback to the interviewer on what was well done and what needs improvement. For the CAPI program, we have developed and are testing a pilot approach whereby interviews are digitally recorded and later a monitor listens to these recordings to assess the field interviewer's performance and provide feedback in order to help improve the quality of the data. In this paper, we will present an overview of the CAPI monitoring project at Statistics Canada by describing the CAPI monitoring methodology and the plans for implementation.

    Release date: 2009-12-03

  • Articles and reports: 11-522-X200800010995
    Description:

    In 1992, a paper entitled "The Optimum Time at which to Conduct Survey Interviews" sought to illustrate the economic benefits to market research organisations in structuring the calling pattern of interviewers in household surveys. The findings were based on the Welsh Inter Censal Survey in 1986. This paper now brings additional information on the calling patterns of interviewers from similar surveys in 1997 and 2006 to ascertain whether the calling patterns of interviewers have changed. The results also examine the importance of having a survey response that is representative of the population, and how efficient calling strategies can help achieve this.

    Release date: 2009-12-03

  • Articles and reports: 11-522-X200800010996
    Description:

    In recent years, the use of paradata has become increasingly important to the management of collection activities at Statistics Canada. Particular attention has been paid to social surveys conducted over the phone, like the Survey of Labour and Income Dynamics (SLID). For recent SLID data collections, the number of call attempts was capped at 40 calls. Investigations of the SLID Blaise Transaction History (BTH) files were undertaken to assess the impact of the cap on calls.The purpose of the first study was to inform decisions as to the capping of call attempts, the second study focused on the nature of nonresponse given the limit of 40 attempts.

    The use of paradata as auxiliary information for studying and accounting for survey nonresponse was also examined. Nonresponse adjustment models using different paradata variables gathered at the collection stage were compared to the current models based on available auxiliary information from the Labour Force Survey.

    Release date: 2009-12-03

  • Articles and reports: 11-522-X200800011006
    Description:

    The Office for National Statistics (ONS) has an obligation to measure and annually report on the burden that it places on businesses participating in its surveys. There are also targets for reduction of costs to businesses complying with government regulation as part of the 2005 Administrative Burdens Reduction Project (ABRP) coordinated by the Better Regulation Executive (BRE).

    Respondent burden is measured by looking at the economic costs to businesses. Over time the methodology for measuring this economic cost has changed with the most recent method being the development and piloting of a Standard Cost Model (SCM) approach.

    The SCM is commonly used in Europe and is focused on measuring objective administrative burdens for all government requests for information e.g. tax returns, VAT, as well as survey participation. This method was not therefore specifically developed to measure statistical response burden. The SCM methodology is activity-based, meaning that the costs and time taken to fulfil requirements are broken down by activity.

    The SCM approach generally collects data using face-to-face interviews. The approach is therefore labour intensive both from a collection and analysis perspective but provides in depth information. The approach developed and piloted at ONS uses paper self-completion questionnaires.

    The objective of this paper is to provide an overview of respondent burden reporting and targets; and to review the different methodologies that ONS has used to measure respondent burden from the perspectives of sampling, data collection, analysis and usability.

    Release date: 2009-12-03

  • Articles and reports: 11-522-X200600110413
    Description:

    The National Health and Nutrition Examination Survey (NHANES) has been conducted by the National Center for Health Statistics for over forty years. The survey collects information on the health and nutritional status of the United States population using in-person interviews and standardized physical examinations conducted in mobile examination centers. During the course of these forty years, numerous lessons have been learned about the conduct of a survey using direct physical measures. Examples of these "lessons learned" are described and provide a guide for other organizations and countries as they plan similar surveys.

    Release date: 2008-03-17

  • Articles and reports: 11-522-X200600110453
    Description:

    National Food and Nutrition Surveys provide critical information to support the understanding the complex relationship between health and diet in the population. Many of these surveys use 24 hour recall methodology which collects at a detailed level all food and beverages consumed over a day. Often it is the longer term intake of foods and nutrients that is of interest and a number of techniques are available that allow estimation of population usual intakes. These techniques require that at least one repeat 24 hour recall be collected from at least a subset of the population in order to estimate the intra individual variability of intakes. Deciding on the number of individuals required to provide a repeat is an important step in the survey design that must recognize that too few repeat individuals compromises the ability to estimate usual intakes, but large numbers of repeats are costly and pose added burden to the respondents. This paper looks at the statistical issues related to the number of repeat individuals, assessing the impact of the number of repeaters on the stability and uncertainty in the estimate of intra individual variability and provides guidance on required number of repeat responders .

    Release date: 2008-03-17
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Analysis (11) (0 to 10 of 11 results)

  • Articles and reports: 11-522-X201300014255
    Description:

    The Brazilian Network Information Center (NIC.br) has designed and carried out a pilot project to collect data from the Web in order to produce statistics about the webpages’ characteristics. Studies on the characteristics and dimensions of the web require collecting and analyzing information from a dynamic and complex environment. The core idea was collecting data from a sample of webpages automatically by using software known as web crawler. The motivation for this paper is to disseminate the methods and results of this study as well as to show current developments related to sampling techniques in a dynamic environment.

    Release date: 2014-10-31

  • Articles and reports: 11-522-X201300014287
    Description:

    The purpose of the EpiNano program is to monitor workers who may be exposed to intentionally produced nanomaterials in France. This program is based both on industrial hygiene data collected in businesses for the purpose of gauging exposure to nanomaterials at workstations and on data from self-administered questionnaires completed by participants. These data will subsequently be matched with health data from national medical-administrative databases (passive monitoring of health events). Follow-up questionnaires will be sent regularly to participants. This paper describes the arrangements for optimizing data collection and matching.

    Release date: 2014-10-31

  • Articles and reports: 11-522-X200800010946
    Description:

    In the mid 1990s the first question testing unit was set-up in the UK Office for National Statistics (ONS). The key objective of the unit was to develop and test the questions and questionnaire for the 2001 Census. Since the establishment of this unit the area has been expanded into a Data Collection Methodology (DCM) Centre of Expertise which now sits in the Methodology Directorate. The DCM centre has three branches which support DCM work for social surveys, business surveys, the Census and external organisations.

    In the past ten years DCM has achieved a variety of things. For example, introduced survey methodology involvement in the development and testing of business survey question(naire)s; introduced a mix-method approach to the development of questions and questionnaires; developed and implemented standards e.g. for the 2011 census questionnaire & showcards; and developed and delivered DCM training events.

    This paper will provide an overview of data collection methodology at the ONS from the perspective of achievements and challenges. It will cover areas such as methods, staff (e.g. recruitment, development and field security), and integration with the survey process.

    Release date: 2009-12-03

  • Articles and reports: 11-522-X200800010954
    Description:

    Over the past year, Statistics Canada has been developing and testing a new way to monitor the performance of interviewers conducting computer-assisted personal interviews (CAPI). A formal process already exists for monitoring centralized telephone interviews. Monitors listen to telephone interviews as they take place to assess the interviewer's performance using pre-defined criteria and provide feedback to the interviewer on what was well done and what needs improvement. For the CAPI program, we have developed and are testing a pilot approach whereby interviews are digitally recorded and later a monitor listens to these recordings to assess the field interviewer's performance and provide feedback in order to help improve the quality of the data. In this paper, we will present an overview of the CAPI monitoring project at Statistics Canada by describing the CAPI monitoring methodology and the plans for implementation.

    Release date: 2009-12-03

  • Articles and reports: 11-522-X200800010995
    Description:

    In 1992, a paper entitled "The Optimum Time at which to Conduct Survey Interviews" sought to illustrate the economic benefits to market research organisations in structuring the calling pattern of interviewers in household surveys. The findings were based on the Welsh Inter Censal Survey in 1986. This paper now brings additional information on the calling patterns of interviewers from similar surveys in 1997 and 2006 to ascertain whether the calling patterns of interviewers have changed. The results also examine the importance of having a survey response that is representative of the population, and how efficient calling strategies can help achieve this.

    Release date: 2009-12-03

  • Articles and reports: 11-522-X200800010996
    Description:

    In recent years, the use of paradata has become increasingly important to the management of collection activities at Statistics Canada. Particular attention has been paid to social surveys conducted over the phone, like the Survey of Labour and Income Dynamics (SLID). For recent SLID data collections, the number of call attempts was capped at 40 calls. Investigations of the SLID Blaise Transaction History (BTH) files were undertaken to assess the impact of the cap on calls.The purpose of the first study was to inform decisions as to the capping of call attempts, the second study focused on the nature of nonresponse given the limit of 40 attempts.

    The use of paradata as auxiliary information for studying and accounting for survey nonresponse was also examined. Nonresponse adjustment models using different paradata variables gathered at the collection stage were compared to the current models based on available auxiliary information from the Labour Force Survey.

    Release date: 2009-12-03

  • Articles and reports: 11-522-X200800011006
    Description:

    The Office for National Statistics (ONS) has an obligation to measure and annually report on the burden that it places on businesses participating in its surveys. There are also targets for reduction of costs to businesses complying with government regulation as part of the 2005 Administrative Burdens Reduction Project (ABRP) coordinated by the Better Regulation Executive (BRE).

    Respondent burden is measured by looking at the economic costs to businesses. Over time the methodology for measuring this economic cost has changed with the most recent method being the development and piloting of a Standard Cost Model (SCM) approach.

    The SCM is commonly used in Europe and is focused on measuring objective administrative burdens for all government requests for information e.g. tax returns, VAT, as well as survey participation. This method was not therefore specifically developed to measure statistical response burden. The SCM methodology is activity-based, meaning that the costs and time taken to fulfil requirements are broken down by activity.

    The SCM approach generally collects data using face-to-face interviews. The approach is therefore labour intensive both from a collection and analysis perspective but provides in depth information. The approach developed and piloted at ONS uses paper self-completion questionnaires.

    The objective of this paper is to provide an overview of respondent burden reporting and targets; and to review the different methodologies that ONS has used to measure respondent burden from the perspectives of sampling, data collection, analysis and usability.

    Release date: 2009-12-03

  • Articles and reports: 11-522-X200600110413
    Description:

    The National Health and Nutrition Examination Survey (NHANES) has been conducted by the National Center for Health Statistics for over forty years. The survey collects information on the health and nutritional status of the United States population using in-person interviews and standardized physical examinations conducted in mobile examination centers. During the course of these forty years, numerous lessons have been learned about the conduct of a survey using direct physical measures. Examples of these "lessons learned" are described and provide a guide for other organizations and countries as they plan similar surveys.

    Release date: 2008-03-17

  • Articles and reports: 11-522-X200600110453
    Description:

    National Food and Nutrition Surveys provide critical information to support the understanding the complex relationship between health and diet in the population. Many of these surveys use 24 hour recall methodology which collects at a detailed level all food and beverages consumed over a day. Often it is the longer term intake of foods and nutrients that is of interest and a number of techniques are available that allow estimation of population usual intakes. These techniques require that at least one repeat 24 hour recall be collected from at least a subset of the population in order to estimate the intra individual variability of intakes. Deciding on the number of individuals required to provide a repeat is an important step in the survey design that must recognize that too few repeat individuals compromises the ability to estimate usual intakes, but large numbers of repeats are costly and pose added burden to the respondents. This paper looks at the statistical issues related to the number of repeat individuals, assessing the impact of the number of repeaters on the stability and uncertainty in the estimate of intra individual variability and provides guidance on required number of repeat responders .

    Release date: 2008-03-17

  • Articles and reports: 11-522-X20010016244
    Description:

    This paper discusses in detail issues dealing with the technical aspects of designing and conducting surveys. It is intended for an audience of survey methodologists.

    Over the past few years, Statistics New Zealand (SNZ) has experienced an increase in the volume of business survey data supplied by e-mail. However, up until now, SNZ has not had the business processes available to support electronic collection in a way that meets both the needs of SNZ and data suppliers. To this end, SNZ has invested a lot of effort over the last year in investigating how best to approach the problems and opportunities presented by electronic data collection. This paper outlines SNZ's plans to move the e-mail supplied data to a secure lodgement facility and the future development of an internet-based data collection system. It also presents a case study of the Monthly Retail Trade Survey data currently supplied by e-mail. This case study illustrates some of the benefits of electronic data, but also examines some of the costs to the organization and the data quality problems encountered. It also highlights the need to consider the data collection methodology within the wider context of the total survey cycle.

    Release date: 2002-09-12
Reference (3)

Reference (3) ((3 results))

  • Surveys and statistical programs – Documentation: 11-522-X201300014260
    Description:

    The Survey of Employment, Payrolls and Hours (SEPH) produces monthly estimates and determines the month-to-month changes for variables such as employment, earnings and hours at detailed industrial levels for Canada, the provinces and territories. In order to improve the efficiency of collection activities for this survey, an electronic questionnaire (EQ) was introduced in the fall of 2012. Given the timeframe allowed for this transition as well as the production calendar of the survey, a conversion strategy was developed for the integration of this new mode. The goal of the strategy was to ensure a good adaptation of the collection environment and also to allow the implementation of a plan of analysis that would evaluate the impact of this change on the results of the survey. This paper will give an overview of the conversion strategy, the different adjustments that were made during the transition period and the results of various evaluations that were conducted. For example, the impact of the integration of the EQ on the collection process, the response rate and the follow-up rate will be presented. In addition, the effect that this new collection mode has on the survey estimates will also be discussed. More specifically, the results of a randomized experiment that was conducted in order to determine the presence of a mode effect will be presented.

    Release date: 2014-10-31

  • Surveys and statistical programs – Documentation: 11-522-X20010016234
    Description:

    This paper discusses in detail issues dealing with the technical aspects of designing and conducting surveys. It is intended for an audience of survey methodologists.

    With the goal of obtaining a complete enumeration of the Canadian agricultural sector, the 2001 Census of Agriculture has been conducted using several collection methods. Challenges to the traditional drop-off and mail-back of paper questionnaires in a household-based enumeration have led to the adoption of supplemental methods using newer technologies to maintain the coverage and content of the census. Overall, this mixed-mode data collection process responds to the critical needs of the census programme at various points. This paper examines these data collection methods, several quality assessments, and the future challenges of obtaining a co-ordinated view of the methods' individual approaches to achieving data quality.

    Release date: 2002-09-12

  • Surveys and statistical programs – Documentation: 21-601-M1998034
    Description:

    This paper describes the experiences, the issues and the expectations of the many different players involved in the implementation of document imaging for the Canadian Census of Agriculture.

    Release date: 2000-01-13
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