Indoor Residual Spraying (IRS) Impact Evaluation Survey 2009
Eritrea, 2009
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Reference ID
ERI_2009_IRSIES_v01_M
Producer(s)
Arianna Legovini, The World Bank and Pedro Carneiro, University College London (UCL), National Malaria Control Program, Government of Eritrea
Collection(s)
Metadata
Created on
Mar 28, 2011
Last modified
Nov 26, 2019
Page views
27509
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10292
Identification
Survey ID Number
ERI_2009_IRSIES_v01_M
Title
Indoor Residual Spraying (IRS) Impact Evaluation Survey 2009
Country/Economy
| Name | Country code |
|---|---|
| Eritrea | ERI |
Study type
Other Household Health Survey [hh/hea]
Series Information
Baseline Data (Round 1)
Kind of Data
Sample survey data [ssd]
Unit of Analysis
Household, Individual
Version
Version Description
v1.1: Edited Data
Version Date
2010-01-27
Scope
Notes
Some of the themes covered by the survey include:
- INDIVIDUAL: Demographic information, education and malaria status.
- HOUSEHOLD: Household listing, respondent's background, mosquito avoidance practices, malaria knowledge, fever, health, consumption, assets and sanitation.
- INDIVIDUAL: Demographic information, education and malaria status.
- HOUSEHOLD: Household listing, respondent's background, mosquito avoidance practices, malaria knowledge, fever, health, consumption, assets and sanitation.
Topics
Keywords
| Keyword |
|---|
| Randomization |
Coverage
Geographic Coverage
The sample covers 150 villages in the Gash Barka region that were randomly assigned to treatement and control groups.
Universe
The survey covered all household members (usual residents).
Producers and sponsors
Primary investigators
| Name |
|---|
| Arianna Legovini, The World Bank and Pedro Carneiro, University College London (UCL) |
| National Malaria Control Program, Government of Eritrea |
Producers
| Name | Role |
|---|---|
| Orotta School of Medicine | Data collection |
| The World Bank | Technical assistance |
| Ministry of Health | Liaison |
Sampling
Sampling Procedure
Sampling design
A two-stage cluster design will be used to generate a probability sample of households within the study area for each of the survey domains (control versus intervention groups). Detailed sampling frames consisting of a count of all households within primary sampling unit (PSU - village) are currently available from the NMCP. PSUs will consist of villages within the study area of Gash Barka, divided into intervention and control villages. To maximize sampling efficiency, 58 PSUs will be selected for each survey domain at the first stage, with 15 households selected from each PSU at the second stage, thereby obtaining a total sample size of 1,740 houses (after adding non-response, the total number of houses is equal to 1,914). The list of eligible PSUs for the study was provided by the NMCP. All households within each selected PSU will be enumerated by the Orotta School of Medicine to create the second stage sampling frames for households. Enumeration of households within each PSU will also allow data to be weighted during analysis if needed. For the second stage, 17 households (ultimate sampling units) will be systematically (systematic random sampling) selected within each enumerated PSU. Data will then be collected at the household level. Survey fieldwork will be conducted just following/during the rainy season in September, 2009.
Sample Size and Power Calculations
A sample size of 870 households in the treatment group (58 villages, 15 households per village) and the same number in the control group will allow the detection (at a 5% level of significance) of a reduction of 10.47% points in malaria parasite prevalence from a baseline of about 15-20% with 80% power. This assumes that the intra-cluster correlation is 0.2. The total sample size is 1,740 households. Adding 10% to account for non-response yields a total sample size of 1,914 houses. Given that there are approximately 4.5 individuals per household, the total sample of individuals will be 8,613.
A two-stage cluster design will be used to generate a probability sample of households within the study area for each of the survey domains (control versus intervention groups). Detailed sampling frames consisting of a count of all households within primary sampling unit (PSU - village) are currently available from the NMCP. PSUs will consist of villages within the study area of Gash Barka, divided into intervention and control villages. To maximize sampling efficiency, 58 PSUs will be selected for each survey domain at the first stage, with 15 households selected from each PSU at the second stage, thereby obtaining a total sample size of 1,740 houses (after adding non-response, the total number of houses is equal to 1,914). The list of eligible PSUs for the study was provided by the NMCP. All households within each selected PSU will be enumerated by the Orotta School of Medicine to create the second stage sampling frames for households. Enumeration of households within each PSU will also allow data to be weighted during analysis if needed. For the second stage, 17 households (ultimate sampling units) will be systematically (systematic random sampling) selected within each enumerated PSU. Data will then be collected at the household level. Survey fieldwork will be conducted just following/during the rainy season in September, 2009.
Sample Size and Power Calculations
A sample size of 870 households in the treatment group (58 villages, 15 households per village) and the same number in the control group will allow the detection (at a 5% level of significance) of a reduction of 10.47% points in malaria parasite prevalence from a baseline of about 15-20% with 80% power. This assumes that the intra-cluster correlation is 0.2. The total sample size is 1,740 households. Adding 10% to account for non-response yields a total sample size of 1,914 houses. Given that there are approximately 4.5 individuals per household, the total sample of individuals will be 8,613.
Data Collection
Dates of Data Collection
| Start | End |
|---|---|
| 2009-10 | 2009-10 |
Data Collection Mode
Face-to-face [f2f]
Data Collectors
| Name |
|---|
| Orotta School of Medicine |
Questionnaires
Questionnaires
A household questionnaire for the IRS Impact Evaluation Survey was administered in each household, which collected various information on household members including sex, age, relationship, marital status, health condition, education level and employment status. The household questionnaire includes housing, mosquito avoidance practices, malaria knowledge, fever and cosumption.
The questionnaire is provided as external resources.
The questionnaire is provided as external resources.
Access policy
Contacts
| Name | Affiliation |
|---|---|
| Edit Velenyi | The World Bank |
Citation requirements
Arriana Legovini and Pedro Carneiro. Indoor Residual Spraying (IRS) Impact Evaluation Survey 2009. Ref. ERI_2009_IRSIES_v01_M. Dataset downloaded from <www.microdata.worldbank.org> on [date].
Access authority
Disclaimer and copyrights
Disclaimer
The user of the data acknowledges that the original collector of the data, the authorized distributor of the data, and the relevant funding agency bear no responsibility for use of the data or for interpretations or inferences based upon such uses.
Copyright
c2010, The World Bank
Metadata production
DDI Document ID
DDI_ERI_2009_IRSIES_v01_M
Producers
| Name | Abbreviation | Affiliation | Role |
|---|---|---|---|
| Akiko Sagesaka | DECDG | The World Bank | Documentation of study |
| Johan A. Mistiaen | DECDG | The World Bank | Documentation of study |
Date of Metadata Production
2011-03-17
DDI Document version
Version 1.1 (March 2011). With revisions based on Impact Evaluation Microdata Catalogue Template v1.1 (EN).
Version 1.0 (September 2010). Original DDI document.
Version 1.0 (September 2010). Original DDI document.