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    Home / Central Data Catalog / HFPS / BRA_2021_HFPS_V02_M
hfps

COVID-19 High Frequency Phone Survey 2021

Brazil, 2021
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Reference ID
BRA_2021_HFPS_v02_M
DOI
https://doi.org/10.48529/twnt-gp17
Producer(s)
Gabriel Lara Ibarra, Anna Luisa Paffhausen, Ricardo Campante Cardoso Vale, Carolina Mejia-Mantilla, Adriana Camacho, Javier Romero
Collection(s)
High-Frequency Phone Surveys
Metadata
Documentation in PDF DDI/XML JSON
Created on
Jun 09, 2022
Last modified
Jul 06, 2022
Page views
4863
Downloads
234
  • Study Description
  • Data Description
  • Documentation
  • Get Microdata
  • Identification
  • Version
  • Scope
  • Coverage
  • Producers and sponsors
  • Sampling
  • Data Collection
  • Questionnaires
  • Data Processing
  • Access policy
  • Disclaimer and copyrights
  • Metadata production

Identification

Survey ID Number
BRA_2021_HFPS_v02_M
Title
COVID-19 High Frequency Phone Survey 2021
Country/Economy
Name Country code
Brazil BRA
Study type
Socio-Economic/Monitoring Survey [hh/sems]
Series Information
The survey is part of the LAC: COVID-19 High Frequency Monitoring Project (P175839) and was conducted under the Brazil Poverty and Equity Program (P177527)
Abstract
The Brazil 2021 COVID-19 Phone Survey was conducted to provide information on how the pandemic had been affecting Brazilian households in 2021. It was inspired by the Latin America and Caribbean High Frequency Phone Surveys and collected information along multiple dimensions relevant to the welfare of the population (e.g. changes in employment and income, coping mechanisms, access to health and education services, gender inequalities, and food insecurity). A total of 2,166 phone interviews were conducted across all Brazilian states between July 26 and October 1, 2021. The survey followed a Random Digit Dialing (RDD) sampling methodology using a dual sampling frame of cellphone and landline numbers. The sampling frame was stratified by type of phone and state. Results are nationally representative for households with a landline or at least one cell phone and of individuals of ages 18 years and above who have an active cell phone number or a landline at home.
Kind of Data
Sample survey data [ssd]
Unit of Analysis
Households and individuals of 18 years of age and older.

Version

Version Description
Version 02: Edited, anonymized dataset for public distribution.
Version Date
2021-06-25
Version Notes
Updated data, variable and value labels are provided in Portuguese.

Scope

Notes
The survey gathered information on food insecurity, changes in employment, income loss, access to health services and education, gender issues, access to digital and banking services and coping mechanisms. Eligible respondents were adults 18 years old and above. Only one respondent per household was interviewed, and she answered both individual and household-level questions. Questions on access to education services for a randomly selected school-age (6-17 years old) child were also answered by the respondent.

Coverage

Geographic Coverage
National coverage
Universe
Households with a landline or in which at least one member has a cell phone, and individuals 18 years of age or above who have an active cell phone number or a landline at home.

Producers and sponsors

Primary investigators
Name Affiliation
Gabriel Lara Ibarra World Bank Group
Anna Luisa Paffhausen World Bank Group
Ricardo Campante Cardoso Vale World Bank Group
Carolina Mejia-Mantilla World Bank Group
Adriana Camacho United Nations Development Programme
Javier Romero World Bank Group
Producers
Name Affiliation Role
Oppen Social Private vendor Survey collection
Funding Agency/Sponsor
Name Role
World Bank Group Funding the study

Sampling

Sampling Procedure
The sample is based on a dual frame of cell phone and landline numbers that was generated through a Random Digit Dialing (RDD) process and consisted of all possible phone numbers under the national phone numbering plan. Numbers were screened through an automated process to identify active numbers and cross-checked with business registries to identify business numbers not eligible for the survey. This method ensures coverage of all landline and cellphone numbers active at the time of the survey. The sampling frame was stratified by type of phone and state.

See Sampling Design and Weighting document for more detail
Response Rate
Response rates for landline phones and cell phones were 11.3 percent and 8.5 percent, respectively. Sizes of the samples drawn from the frames were based on the expectation of low response rates for phone surveys.

See Sampling Design and Weighting document for more detail.
Weighting
The survey has two sample units: households and individuals. Sampling weights were computed for each unit and should be used according to the estimate of interest. The weighting process involved the following steps:
1. Calculation of the inclusion probabilities of landline and cell phone numbers, including automatic adjustment for non-response.
2. Computation of base weights for households and individuals.
3. Calibration of individual and household weights, using external data from official sources (adjusted for the national phone coverage).

The survey included a child module that was administered for one random eligible child selected in each household. In this case the child weight is equal to the household weight multiplied by the number of eligible children in the household.

See Sampling Design and Weighting document for more detail.

Data Collection

Dates of Data Collection
Start End Cycle
2021-07-26 2021-10-01 Wave 1
Data Collection Mode
Computer Assisted Telephone Interview [cati]
Supervision
Supervision was carried out jointly by the Data collection vendor and the Brazil Poverty team.
Data Collection Notes
The CATI data collection for the Brazil HFPS proceeded at a slower pace than expected mainly due to the relatively low response rate, and the natural spacing of time required to implement the quality control protocols in terms of the number of call-attempts, the initial requirement for call-attempts on weekends, etc. The data collection period was originally intended to be a little over a month, but it had to be extended. As the progress of the completed call interviews by state was being monitored, at a certain point it was decided to relax some of the protocols, such as removing the requirement for weekend call-attempts, and reducing the total number of callbacks to 5. A review of the CATI records indicated that following the fifth call-attempt the remaining calls had a very low completion rate, so this adjustment of the protocol did not have much effect on quality of the results.
Data Collectors
Name Abbreviation Affiliation
Oppen Social Oppen Private vendor

Questionnaires

Questionnaires
Available in Portuguese. The questionnaire followed closely the LAC HFPS Questionnaire of Phase II Wave I but had some critical variations.

Data Processing

Other Processing
The data collected in the survey has been used to produce two datasets. One dataset contains the information for the respondent as well as for the household. The dataset, labeled 'Cases’, includes both associated individual and household weights. A second dataset, labeled 'Ninos', contains the child-specific answers that were collected in the Education module. The dataset contains the relevant sampling weights.

Access policy

Contacts
Name Affiliation Email
Gabriel Lara Ibarra Senior Economist ELCPV glaraibarra@worldbank.org
Anna Luisa Paffhausen Economist ELCPV apaffhausen@worldbank.org
Carolina Mejia-Mantilla Senior Economist ELCPV cmejiamantilla@worldbank.org
Citation requirements
World Bank and United Nations Development Programme (2021). Brazil Covid-19 High-Frequency Phone Surveys 2021. Washington DC. Dataset downloaded from [url] on [date].

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.

Metadata production

DDI Document ID
DDI_BRA_2021_HFPS_v02_M_WB
Producers
Name Abbreviation Affiliation Role
Development Economics Data Group DECDG The World Bank Documentation of the study
Date of Metadata Production
2022-06-07
DDI Document version
Version 02 (July 2022). Variable and value labels are provided in Portuguese.
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