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- 1. Comparison of survey regression techniques in the context of small area estimation of poverty ArchivedArticles and reports: 12-001-X201000211378Description:
One key to poverty alleviation or eradication in the third world is reliable information on the poor and their location, so that interventions and assistance can be effectively targeted to the neediest people. Small area estimation is one statistical technique that is used to monitor poverty and to decide on aid allocation in pursuit of the Millennium Development Goals. Elbers, Lanjouw and Lanjouw (ELL) (2003) proposed a small area estimation methodology for income-based or expenditure-based poverty measures, which is implemented by the World Bank in its poverty mapping projects via the involvement of the central statistical agencies in many third world countries, including Cambodia, Lao PDR, the Philippines, Thailand and Vietnam, and is incorporated into the World Bank software program PovMap. In this paper, the ELL methodology which consists of first modeling survey data and then applying that model to census information is presented and discussed with strong emphasis on the first phase, i.e., the fitting of regression models and on the estimated standard errors at the second phase. Other regression model fitting procedures such as the General Survey Regression (GSR) (as described in Lohr (1999) Chapter 11) and those used in existing small area estimation techniques: Pseudo-Empirical Best Linear Unbiased Prediction (Pseudo-EBLUP) approach (You and Rao 2002) and Iterative Weighted Estimating Equation (IWEE) method (You, Rao and Kovacevic 2003) are presented and compared with the ELL modeling strategy. The most significant difference between the ELL method and the other techniques is in the theoretical underpinning of the ELL model fitting procedure. An example based on the Philippines Family Income and Expenditure Survey is presented to show the differences in both the parameter estimates and their corresponding standard errors, and in the variance components generated from the different methods and the discussion is extended to the effect of these on the estimated accuracy of the final small area estimates themselves. The need for sound estimation of variance components, as well as regression estimates and estimates of their standard errors for small area estimation of poverty is emphasized.
Release date: 2010-12-21 - 2. Hospitalization risk in a type 2 diabetes cohort ArchivedArticles and reports: 82-003-X201000311326Geography: CanadaDescription:
This analysis examines risk factors for acute care hospitalization in a cohort with type 2 diabetes.
Release date: 2010-08-18 - Articles and reports: 12-001-X201000111244Description:
This paper considers the problem of selecting nonparametric models for small area estimation, which recently have received much attention. We develop a procedure based on the idea of fence method (Jiang, Rao, Gu and Nguyen 2008) for selecting the mean function for the small areas from a class of approximating splines. Simulation results show impressive performance of the new procedure even when the number of small areas is fairly small. The method is applied to a hospital graft failure dataset for selecting a nonparametric Fay-Herriot type model.
Release date: 2010-06-29 - Articles and reports: 82-003-X201000211154Geography: CanadaDescription:
This study presents blood pressure distributions and estimates of elevated blood pressure for a representative sample of Canadian children and adolescents aged 6 to 19 years.
Release date: 2010-05-19 - Articles and reports: 11-008-X201000111142Geography: CanadaDescription:
Métis peoples make up one third of the Aboriginal population in Canada (about 390,000 people in 2006). Using the 2006 Aboriginal Peoples Survey (15 and older) and Métis Supplement this article explores various cultural activities of the Métis population. More specifically, it considers involvement in traditional activities, such as: arts and crafts, hunting, fishing, trapping, and gathering wild vegetation. It also explores Aboriginal language use, involvement in Métis-specific organizations, and spiritual and religious practices. Findings are presented by sex, age, and region.
Release date: 2010-04-20 - 6. Blood pressure in Canadian adults ArchivedArticles and reports: 82-003-X201000111118Geography: CanadaDescription:
This article describes the distribution of blood pressure in the Canadian adult population, and provides estimates of the prevalence of hypertension by sex and age group. Levels of hypertension awareness, treatment and control are also reported.
Release date: 2010-02-17 - Articles and reports: 82-003-X201000111064Geography: CanadaDescription:
This article provides up-to-date estimates of fitness levels of Canadians aged 20 to 69 years. Results are compared with estimates from 1981.
Release date: 2010-01-13 - 8. Fitness of Canadian children and youth: Results from the 2007-2009 Canadian Health Measures Survey ArchivedArticles and reports: 82-003-X201000111065Geography: CanadaDescription:
This article provides up-to-date estimates of fitness levels of Canadians aged 6 to 19 years. Results are compared with estimates from 1981.
Release date: 2010-01-13
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Articles and reports (8)
Articles and reports (8) ((8 results))
- 1. Comparison of survey regression techniques in the context of small area estimation of poverty ArchivedArticles and reports: 12-001-X201000211378Description:
One key to poverty alleviation or eradication in the third world is reliable information on the poor and their location, so that interventions and assistance can be effectively targeted to the neediest people. Small area estimation is one statistical technique that is used to monitor poverty and to decide on aid allocation in pursuit of the Millennium Development Goals. Elbers, Lanjouw and Lanjouw (ELL) (2003) proposed a small area estimation methodology for income-based or expenditure-based poverty measures, which is implemented by the World Bank in its poverty mapping projects via the involvement of the central statistical agencies in many third world countries, including Cambodia, Lao PDR, the Philippines, Thailand and Vietnam, and is incorporated into the World Bank software program PovMap. In this paper, the ELL methodology which consists of first modeling survey data and then applying that model to census information is presented and discussed with strong emphasis on the first phase, i.e., the fitting of regression models and on the estimated standard errors at the second phase. Other regression model fitting procedures such as the General Survey Regression (GSR) (as described in Lohr (1999) Chapter 11) and those used in existing small area estimation techniques: Pseudo-Empirical Best Linear Unbiased Prediction (Pseudo-EBLUP) approach (You and Rao 2002) and Iterative Weighted Estimating Equation (IWEE) method (You, Rao and Kovacevic 2003) are presented and compared with the ELL modeling strategy. The most significant difference between the ELL method and the other techniques is in the theoretical underpinning of the ELL model fitting procedure. An example based on the Philippines Family Income and Expenditure Survey is presented to show the differences in both the parameter estimates and their corresponding standard errors, and in the variance components generated from the different methods and the discussion is extended to the effect of these on the estimated accuracy of the final small area estimates themselves. The need for sound estimation of variance components, as well as regression estimates and estimates of their standard errors for small area estimation of poverty is emphasized.
Release date: 2010-12-21 - 2. Hospitalization risk in a type 2 diabetes cohort ArchivedArticles and reports: 82-003-X201000311326Geography: CanadaDescription:
This analysis examines risk factors for acute care hospitalization in a cohort with type 2 diabetes.
Release date: 2010-08-18 - Articles and reports: 12-001-X201000111244Description:
This paper considers the problem of selecting nonparametric models for small area estimation, which recently have received much attention. We develop a procedure based on the idea of fence method (Jiang, Rao, Gu and Nguyen 2008) for selecting the mean function for the small areas from a class of approximating splines. Simulation results show impressive performance of the new procedure even when the number of small areas is fairly small. The method is applied to a hospital graft failure dataset for selecting a nonparametric Fay-Herriot type model.
Release date: 2010-06-29 - Articles and reports: 82-003-X201000211154Geography: CanadaDescription:
This study presents blood pressure distributions and estimates of elevated blood pressure for a representative sample of Canadian children and adolescents aged 6 to 19 years.
Release date: 2010-05-19 - Articles and reports: 11-008-X201000111142Geography: CanadaDescription:
Métis peoples make up one third of the Aboriginal population in Canada (about 390,000 people in 2006). Using the 2006 Aboriginal Peoples Survey (15 and older) and Métis Supplement this article explores various cultural activities of the Métis population. More specifically, it considers involvement in traditional activities, such as: arts and crafts, hunting, fishing, trapping, and gathering wild vegetation. It also explores Aboriginal language use, involvement in Métis-specific organizations, and spiritual and religious practices. Findings are presented by sex, age, and region.
Release date: 2010-04-20 - 6. Blood pressure in Canadian adults ArchivedArticles and reports: 82-003-X201000111118Geography: CanadaDescription:
This article describes the distribution of blood pressure in the Canadian adult population, and provides estimates of the prevalence of hypertension by sex and age group. Levels of hypertension awareness, treatment and control are also reported.
Release date: 2010-02-17 - Articles and reports: 82-003-X201000111064Geography: CanadaDescription:
This article provides up-to-date estimates of fitness levels of Canadians aged 20 to 69 years. Results are compared with estimates from 1981.
Release date: 2010-01-13 - 8. Fitness of Canadian children and youth: Results from the 2007-2009 Canadian Health Measures Survey ArchivedArticles and reports: 82-003-X201000111065Geography: CanadaDescription:
This article provides up-to-date estimates of fitness levels of Canadians aged 6 to 19 years. Results are compared with estimates from 1981.
Release date: 2010-01-13
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