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- Articles and reports: 11-522-X20010016250Description:
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.
This paper describes the Korea National Statistics Office's (KNSO) experiences in data quality assessment and introduces the strategies of institutionalizing the assessment procedure. This paper starts by briefly describing the definition of quality assessment, quality dimensions and indicators at the national level. It introduces the current situation of the quality assessment process in KNSO and lists the six dimensions of quality that have been identified: relevance, accuracy, timeliness, accessibility, comparability and efficiency. Based on the lessons learned from these experiences, this paper points out three essential elements required in an advanced system of data quality assessment: an objective and independent planning system, a set of appropriate indicators and competent personnel specialized in data quality assessment.
Release date: 2002-09-12 - Articles and reports: 11-522-X20010016251Description:
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.This paper provides an initial look at the performance indicators of statistical agencies in the United States in order to offer a framework for benchmarking performance. As shown by this paper, several agencies have taken extremely different approaches in measuring their performance, both in terms of what they are measuring and how they are measuring it. Sharing this information is the first step toward making these measures more robust and comparable across all US agencies and international statistics offices.
Release date: 2002-09-12 - 3. Correcting for non-response in indirect sampling ArchivedArticles and reports: 11-522-X20010016267Description:
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.
In practice, a list of the desired collection units is not always available. Instead, a list of different units that are somehow related to the collection units may be provided, thus producing two related populations, UA and UB. An estimate for UB needs to be created, however, the sampling frame provided is only for the UA population.
One solution for this problem is to select a sample from UA (sA) and produce an estimate for UB using the existing relationship between the two populations. This process may be referred to as indirect sampling. To assign a selection probability, or an estimation weight, for the survey units, Lavallée (1995) developed the generalized weight share method (GWSM). The GWSM produces an estimation weight that basically constitutes an average of the sampling weights of the units in sA.
This paper discusses the types of non-response associated with indirect sampling and the possible estimation problems that can occur in the application of the GWSM.
Release date: 2002-09-12 - 4. Quality measurement- Eurostat experiences ArchivedArticles and reports: 11-522-X20010016278Description:
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.
The first round on quality reporting of the statistics produced in Eurostat has almost been completed. This paper presents the experiences so far and, in particular, some of the methodological problems encountered when measuring the quality of the statistics that are produced for international comparisons. A proposal is also presented for indicators that summarize the detailed information provided in these quality reports. Two sets of indicator are discussed: the first more producer-oriented, the second more user-oriented.
Release date: 2002-09-12 - Articles and reports: 11-522-X20010016281Description:
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.
Methodology for estimating the sampling error of the non-seasonally adjusted estimate of level of the Index of Production (IoP) has previously been developed using Taylor linearization and parametric bootstrap methods, with both producing comparable results. From the study, it was considered that the parametric bootstrap approach would be more practical to implement. This paper describes the methodology that is being developed to estimate the sampling error of the non-seasonally adjusted IoP change using the parametric bootstrap method, along with the data that are needed from the contributing surveys, the assumptions made, and the practical problems encountered during development.
Release date: 2002-09-12 - 6. Disclosure auditing in rounded tables ArchivedArticles and reports: 11-522-X20010016286Description:
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.
It is customary for statistical agencies to audit tables containing suppressed cells in order to ensure that there is sufficient protection against inadvertent disclosure of sensitive information. If the table contains rounded values, this fact may be ignored by the audit procedure. This oversight can result in over-protection, reducing the utility of the published data. This paper provides correct auditing formulation and gives examples of over-protection.
Release date: 2002-09-12 - Articles and reports: 11-522-X20010016292Description:
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.
Statistics can serve to benefit society, but, if manipulated politically or otherwise, statistics may also be used by the powerful as instruments to maintain the status quo or even to oppress. Statisticians working internationally, usually employed by international, supra-national or bilateral agencies, face a range of problems as they try to 'make a difference' in the lives of the poorest people in the world. One of the most difficult challenges statisticians face is the dilemma between open accountability and national sovereignty (in relation to what data are collected, the methods used and who is to have access to the results). Because of increasing globalization and new modalities of development co-operation and partnership, statisticians work in a constantly changing environment.
This paper addresses the problems of improving the quality of cross-national data. This paper aims to raise consciousness of the role of statisticians at the international level; describe some of the constraints under which statisticians work; address principles which ought to govern the general activities of statisticians; and evaluate, in particular, the relevance of such principles to international statisticians. This paper also draws upon the recent Presidential Address to the Royal Statistical Society (Presented June 2001, JRSS Series D forthcoming).
Release date: 2002-09-12 - Articles and reports: 12-001-X20010026092Description:
To augment the amount of available information, data from different sources are increasingly being combined. These databases are often combined using record linkage methods. When there is no unique identifier, a probabilistic linkage is used. In that case, a record on a first file is associated with a probability that is linked to a record on a second file, and then a decision is taken on whether a possible link is a true link or not. This usually requires a non-negligible amount of manual resolution. It might then be legitimate to evaluate if manual resolution can be reduced or even eliminated. This issue is addressed in this paper where one tries to produce an estimate of a total (or a mean) of one population, when using a sample selected from another population linked somehow to the first population. In other words, having two populations linked through probabilistic record linkage, we try to avoid any decision concerning the validity of links and still be able to produce an unbiased estimate for a total of the one of two populations. To achieve this goal, we suggest the use of the Generalised Weight Share Method (GWSM) described by Lavallée (1995).
Release date: 2002-02-28
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Articles and reports (8)
Articles and reports (8) ((8 results))
- Articles and reports: 11-522-X20010016250Description:
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.
This paper describes the Korea National Statistics Office's (KNSO) experiences in data quality assessment and introduces the strategies of institutionalizing the assessment procedure. This paper starts by briefly describing the definition of quality assessment, quality dimensions and indicators at the national level. It introduces the current situation of the quality assessment process in KNSO and lists the six dimensions of quality that have been identified: relevance, accuracy, timeliness, accessibility, comparability and efficiency. Based on the lessons learned from these experiences, this paper points out three essential elements required in an advanced system of data quality assessment: an objective and independent planning system, a set of appropriate indicators and competent personnel specialized in data quality assessment.
Release date: 2002-09-12 - Articles and reports: 11-522-X20010016251Description:
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.This paper provides an initial look at the performance indicators of statistical agencies in the United States in order to offer a framework for benchmarking performance. As shown by this paper, several agencies have taken extremely different approaches in measuring their performance, both in terms of what they are measuring and how they are measuring it. Sharing this information is the first step toward making these measures more robust and comparable across all US agencies and international statistics offices.
Release date: 2002-09-12 - 3. Correcting for non-response in indirect sampling ArchivedArticles and reports: 11-522-X20010016267Description:
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.
In practice, a list of the desired collection units is not always available. Instead, a list of different units that are somehow related to the collection units may be provided, thus producing two related populations, UA and UB. An estimate for UB needs to be created, however, the sampling frame provided is only for the UA population.
One solution for this problem is to select a sample from UA (sA) and produce an estimate for UB using the existing relationship between the two populations. This process may be referred to as indirect sampling. To assign a selection probability, or an estimation weight, for the survey units, Lavallée (1995) developed the generalized weight share method (GWSM). The GWSM produces an estimation weight that basically constitutes an average of the sampling weights of the units in sA.
This paper discusses the types of non-response associated with indirect sampling and the possible estimation problems that can occur in the application of the GWSM.
Release date: 2002-09-12 - 4. Quality measurement- Eurostat experiences ArchivedArticles and reports: 11-522-X20010016278Description:
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.
The first round on quality reporting of the statistics produced in Eurostat has almost been completed. This paper presents the experiences so far and, in particular, some of the methodological problems encountered when measuring the quality of the statistics that are produced for international comparisons. A proposal is also presented for indicators that summarize the detailed information provided in these quality reports. Two sets of indicator are discussed: the first more producer-oriented, the second more user-oriented.
Release date: 2002-09-12 - Articles and reports: 11-522-X20010016281Description:
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.
Methodology for estimating the sampling error of the non-seasonally adjusted estimate of level of the Index of Production (IoP) has previously been developed using Taylor linearization and parametric bootstrap methods, with both producing comparable results. From the study, it was considered that the parametric bootstrap approach would be more practical to implement. This paper describes the methodology that is being developed to estimate the sampling error of the non-seasonally adjusted IoP change using the parametric bootstrap method, along with the data that are needed from the contributing surveys, the assumptions made, and the practical problems encountered during development.
Release date: 2002-09-12 - 6. Disclosure auditing in rounded tables ArchivedArticles and reports: 11-522-X20010016286Description:
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.
It is customary for statistical agencies to audit tables containing suppressed cells in order to ensure that there is sufficient protection against inadvertent disclosure of sensitive information. If the table contains rounded values, this fact may be ignored by the audit procedure. This oversight can result in over-protection, reducing the utility of the published data. This paper provides correct auditing formulation and gives examples of over-protection.
Release date: 2002-09-12 - Articles and reports: 11-522-X20010016292Description:
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.
Statistics can serve to benefit society, but, if manipulated politically or otherwise, statistics may also be used by the powerful as instruments to maintain the status quo or even to oppress. Statisticians working internationally, usually employed by international, supra-national or bilateral agencies, face a range of problems as they try to 'make a difference' in the lives of the poorest people in the world. One of the most difficult challenges statisticians face is the dilemma between open accountability and national sovereignty (in relation to what data are collected, the methods used and who is to have access to the results). Because of increasing globalization and new modalities of development co-operation and partnership, statisticians work in a constantly changing environment.
This paper addresses the problems of improving the quality of cross-national data. This paper aims to raise consciousness of the role of statisticians at the international level; describe some of the constraints under which statisticians work; address principles which ought to govern the general activities of statisticians; and evaluate, in particular, the relevance of such principles to international statisticians. This paper also draws upon the recent Presidential Address to the Royal Statistical Society (Presented June 2001, JRSS Series D forthcoming).
Release date: 2002-09-12 - Articles and reports: 12-001-X20010026092Description:
To augment the amount of available information, data from different sources are increasingly being combined. These databases are often combined using record linkage methods. When there is no unique identifier, a probabilistic linkage is used. In that case, a record on a first file is associated with a probability that is linked to a record on a second file, and then a decision is taken on whether a possible link is a true link or not. This usually requires a non-negligible amount of manual resolution. It might then be legitimate to evaluate if manual resolution can be reduced or even eliminated. This issue is addressed in this paper where one tries to produce an estimate of a total (or a mean) of one population, when using a sample selected from another population linked somehow to the first population. In other words, having two populations linked through probabilistic record linkage, we try to avoid any decision concerning the validity of links and still be able to produce an unbiased estimate for a total of the one of two populations. To achieve this goal, we suggest the use of the Generalised Weight Share Method (GWSM) described by Lavallée (1995).
Release date: 2002-02-28
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