XIII Recenseamento Geral da População e III Recenseamento Geral da Habitação 1991 - IPUMS Subset
Portugal, 1991
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Reference ID
PRT_1991_PHC_v01_M_v02_A_IPUMS
Producer(s)
Portugal Instituto Nacional de Estatística (INE), Minnesota Population Center
Collection(s)
Metadata
Created on
Sep 24, 2014
Last modified
Apr 25, 2018
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Identification
Survey ID Number
PRT_1991_PHC_v01_M_v02_A_IPUMS
Title
XIII Recenseamento Geral da População e III Recenseamento Geral da Habitação 1991 - IPUMS Subset
Country/Economy
| Name | Country code |
|---|---|
| Portugal | PRT |
Study type
Population and Housing Census [hh/popcen]
Abstract
IPUMS-International is an effort to inventory, preserve, harmonize, and disseminate census microdata from around the world. The project has collected the world's largest archive of publicly available census samples. The data are coded and documented consistently across countries and over time to facillitate comparative research. IPUMS-International makes these data available to qualified researchers free of charge through a web dissemination system.
The IPUMS project is a collaboration of the Minnesota Population Center, National Statistical Offices, and international data archives. Major funding is provided by the U.S. National Science Foundation and the Demographic and Behavioral Sciences Branch of the National Institute of Child Health and Human Development. Additional support is provided by the University of Minnesota Office of the Vice President for Research, the Minnesota Population Center, and Sun Microsystems.
The IPUMS project is a collaboration of the Minnesota Population Center, National Statistical Offices, and international data archives. Major funding is provided by the U.S. National Science Foundation and the Demographic and Behavioral Sciences Branch of the National Institute of Child Health and Human Development. Additional support is provided by the University of Minnesota Office of the Vice President for Research, the Minnesota Population Center, and Sun Microsystems.
Kind of Data
Census/enumeration data [cen]
Unit of Analysis
Dwelling
UNITS IDENTIFIED:
- Dwellings: Yes
- Vacant units: Yes
- Households: Yes
- Individuals: Yes
- Group quarters: Yes
UNIT DESCRIPTIONS:
- Dwellings: Are structurally separate and independent and designed for permanent human habitation at a fixed location. They are not used wholly for other purposes at the time of the census or are actually used as the principal usual residence of at least one person at the time of the census.
- Households: Group of persons living at the same dwelling and that have kinship relations among them ("de jure" or "de facto"), regardless of occupying the whole or part of the housing unit. A person who lives alone in a separate housing unit or who occupies, as a lodger, a separate room (or rooms) of a housing unit, but does not have kinship relations with the other occupants.
- Group quarters: Group of persons living in a collective housing unit (institution) that, regardless of the family relationship among them, they respect common rules, are beneficiaries of the purposes of the institution, and are ruled by a specific entity within or without that group.
UNITS IDENTIFIED:
- Dwellings: Yes
- Vacant units: Yes
- Households: Yes
- Individuals: Yes
- Group quarters: Yes
UNIT DESCRIPTIONS:
- Dwellings: Are structurally separate and independent and designed for permanent human habitation at a fixed location. They are not used wholly for other purposes at the time of the census or are actually used as the principal usual residence of at least one person at the time of the census.
- Households: Group of persons living at the same dwelling and that have kinship relations among them ("de jure" or "de facto"), regardless of occupying the whole or part of the housing unit. A person who lives alone in a separate housing unit or who occupies, as a lodger, a separate room (or rooms) of a housing unit, but does not have kinship relations with the other occupants.
- Group quarters: Group of persons living in a collective housing unit (institution) that, regardless of the family relationship among them, they respect common rules, are beneficiaries of the purposes of the institution, and are ruled by a specific entity within or without that group.
Version
Version Description
Version 6.4. The datasets contain selected variables from the original census microdata plus harmonized variables from the IPUMS-International database.
In v6.4, the research team continued to carry out improvements to geography, providing harmonized geographic units for the second administrative level for roughly half the countries. More information about IPUMS geography variables is available <a href='https://international.ipums.org/international/geography_variables.shtml'>here</a>. Also, approximately 100 integrated variables were renamed. Affected variables with their current and previous names are listed <a href='https://international.ipums.org/international/resources/misc_docs/renamed_variables_sept2015.pdf'>here</a>. Geography variable also underwent wholesale renaming.
In this update, IPUMS added 19 new samples for Armenia, Austria, Costa Rica, Ethiopia, France, Ghana, Mozambique, Paraguay, Portugal, Puerto Rico, South Africa, and Spain. Ethiopia, Mozambique, and Paraguay were newly added countries to IPUMS. Samples for other countries extend pre-existing series for those countries.
In v6.4, the research team continued to carry out improvements to geography, providing harmonized geographic units for the second administrative level for roughly half the countries. More information about IPUMS geography variables is available <a href='https://international.ipums.org/international/geography_variables.shtml'>here</a>. Also, approximately 100 integrated variables were renamed. Affected variables with their current and previous names are listed <a href='https://international.ipums.org/international/resources/misc_docs/renamed_variables_sept2015.pdf'>here</a>. Geography variable also underwent wholesale renaming.
In this update, IPUMS added 19 new samples for Armenia, Austria, Costa Rica, Ethiopia, France, Ghana, Mozambique, Paraguay, Portugal, Puerto Rico, South Africa, and Spain. Ethiopia, Mozambique, and Paraguay were newly added countries to IPUMS. Samples for other countries extend pre-existing series for those countries.
Version Date
2016-04-25
Scope
Topics
| Topic | Vocabulary |
|---|---|
| Technical Household Variables -- HOUSEHOLD | IPUMS |
| Group Quarters Variables -- HOUSEHOLD | IPUMS |
| Geography: Global Variables -- HOUSEHOLD | IPUMS |
| Geography: M-Z Variables -- HOUSEHOLD | IPUMS |
| Utilities Variables -- HOUSEHOLD | IPUMS |
| Dwelling Characteristics Variables -- HOUSEHOLD | IPUMS |
| Constructed Household Variables -- HOUSEHOLD | IPUMS |
| Technical Person Variables -- PERSON | IPUMS |
| Constructed Family Interrelationship Variables -- PERSON | IPUMS |
| Demographic Variables -- PERSON | IPUMS |
| Nativity and Birthplace Variables -- PERSON | IPUMS |
| Education Variables -- PERSON | IPUMS |
| Work Variables -- PERSON | IPUMS |
| Income Variables -- PERSON | IPUMS |
| Migration Variables -- PERSON | IPUMS |
| Disability Variables -- PERSON | IPUMS |
| Household Economic Variables -- HOUSEHOLD | IPUMS |
| Ethnicity and Language Variables -- PERSON | IPUMS |
| Work: Industry Variables -- PERSON | IPUMS |
| Work: Occupation Variables -- PERSON | IPUMS |
Coverage
Geographic Coverage
National coverage
Geographic Unit
Eurostat NUTS3 region and large city
Universe
9,867,147
Producers and sponsors
Primary investigators
| Name | Affiliation |
|---|---|
| Portugal Instituto Nacional de Estatística (INE) | |
| Minnesota Population Center | University of Minnesota |
Sampling
Sampling Procedure
MICRODATA SOURCE: Portugal Instituto Nacional de Estatística (INE)
SAMPLE DESIGN: Systematic, for every 20th dwelling/housing unit, excluding collective dwellings, with the start on the first dwelling of each one of the seven NUTS II. Persons living in the collective dwellings were selected apart but using the same methodological approach.
SAMPLE UNIT: Dwelling for private dwellings; person for collective dwellings
SAMPLE FRACTION: 5%
SAMPLE SIZE (person records): 491,755
SAMPLE DESIGN: Systematic, for every 20th dwelling/housing unit, excluding collective dwellings, with the start on the first dwelling of each one of the seven NUTS II. Persons living in the collective dwellings were selected apart but using the same methodological approach.
SAMPLE UNIT: Dwelling for private dwellings; person for collective dwellings
SAMPLE FRACTION: 5%
SAMPLE SIZE (person records): 491,755
Response Rate
COVERAGE: Buildings 99.6%; dwellings 99.4%; households 99.2%; individuals 99.0%
Weighting
Self-weighting (expansion factor=20)
Data Collection
Dates of Data Collection
| Start | End |
|---|---|
| 1991-03-01 | 1991-06-01 |
Time periods
| Start date | End date |
|---|---|
| 1991-04-15 | 1991-04-15 |
Data Collection Mode
Face-to-face [f2f]
Supervision
Direct enumeration
Data Collection Notes
De Jure, CENSUS DAY: April 15, 1991, FIELD WORK PERIOD: March to July 1991
Questionnaires
Questionnaires
One questionnaire for each of the following statistical units: building, housing unit, private household, institutional household, individual and "collective questionnaire" (for groups of individuals presents but not residents).
Access policy
Contacts
| Name |
|---|
| Portugal Instituto Nacional de Estatística (INE) |
Confidentiality
IPUMS-International distributes integrated microdata of individuals and households only by agreement of collaborating national statistical offices and under the strictest of confidence. Before data may be distributed to an individual researcher, an electronic license agreement must be signed and approved.
To gain access to the data, a researcher must agree to the following:
(1) Implement security measures to prevent unauthorized access to census microdata. Under IPUMS-International agreements with collaborating agencies, redistribution of the data to third parties is prohibited.
(2) Use the microdata for the exclusive purposes of scholarly research and education. Researchers must explicitly agree to not use microdata acquired for any commercial or income-generating venture.
(3) Maintain the confidentiality of persons, households, and other entities. Any attempt to ascertain the identity of persons or households from the microdata is prohibited. Alleging that a person or household has been identified is also prohibited.
(4) Report all publications based on these data to IPUMS-International, which will in turn pass the information on to the relevant national statistical agencies.
Once a project is approved, a password is issued and data may be acquired through the Internet. Penalties for violating the license include: revocation of the license, recall of all microdata acquired, filing of a motion of censure to the appropriate professional organizations, and civil prosecution under the relevant national or international statutes.
These safeguards mirror the principles from the Joint ECE/Eurostat Work Session on Statistical Data Confidentiality. Employees of the Minnesota Population Center who work with the census microdata to produce the harmonized database also sign agreements to respect the confidentiality of the data.
IPUMS-International works with each country's statistical office to minimize the risk of disclosure of respondent information. The details of the confidentiality protections vary across countries, but in all cases, names and detailed geographic information are suppressed and top-codes are imposed on variables such as income that might identify specific persons. In addition, IPUMS-International uses a variety of technical procedures to enhance confidentiality protection. These include the following:
(1) Swapping an undisclosed fraction of records from one administrative district to another to make positive identification of individuals impossible.
(2) Randomizing the placement of households within districts to disguise the order in which individuals were enumerated or the data processed.
(3) Aggregating codes of sensitive characteristics (e.g., grouping together very small ethnic categories)
(4) Top- and bottom-coding continuous variables to prevent identification of extreme cases.
The safety record for public-use census microdata is apparently perfect. In almost four decades of use, there has not been a single verified breach of statistical confidentiality. The measures implemented by the IPUMS-International are designed to extend this record.
Access conditions
An adapted version of the dataset, harmonized for international comparability, is available from IPUMS-International (https://international.ipums.org/international/) under the following conditions:
IPUMS-International distributes integrated microdata of individuals and households only by agreement of collaborating national statistical offices and under the strictest of confidence. Before data may be distributed to an individual researcher, an electronic license agreement must be signed and approved. To gain access to the data, a researcher must agree to the following:
(1) Implement security measures to prevent unauthorized access to census microdata. Under IPUMS-International agreements with collaborating agencies, redistribution of the data to third parties is prohibited.
(2) Use the microdata for the exclusive purposes of scholarly research and education. Researchers must explicitly agree to not use microdata acquired for any commercial or income-generating venture.
(3) Maintain the confidentiality of persons, households, and other entities. Any attempt to ascertain the identity of persons or households from the microdata is prohibited. Alleging that a person or household has been identified is also prohibited.
(4) Report all publications based on these data to IPUMS-International, which will in turn pass the information on to the relevant national statistical agencies.
Once a project is approved, a password is issued and data may be acquired through the Internet. Penalties for violating the license include: revocation of the license, recall of all microdata acquired, filing of a motion of censure to the appropriate professional organizations, and civil prosecution under the relevant national or international statutes.
These safeguards mirror the principles from the Joint ECE/Eurostat Work Session on Statistical Data Confidentiality. Employees of the Minnesota Population Center who work with the census microdata to produce the harmonized database also sign agreements to respect the confidentiality of the data.
IPUMS-International distributes integrated microdata of individuals and households only by agreement of collaborating national statistical offices and under the strictest of confidence. Before data may be distributed to an individual researcher, an electronic license agreement must be signed and approved. To gain access to the data, a researcher must agree to the following:
(1) Implement security measures to prevent unauthorized access to census microdata. Under IPUMS-International agreements with collaborating agencies, redistribution of the data to third parties is prohibited.
(2) Use the microdata for the exclusive purposes of scholarly research and education. Researchers must explicitly agree to not use microdata acquired for any commercial or income-generating venture.
(3) Maintain the confidentiality of persons, households, and other entities. Any attempt to ascertain the identity of persons or households from the microdata is prohibited. Alleging that a person or household has been identified is also prohibited.
(4) Report all publications based on these data to IPUMS-International, which will in turn pass the information on to the relevant national statistical agencies.
Once a project is approved, a password is issued and data may be acquired through the Internet. Penalties for violating the license include: revocation of the license, recall of all microdata acquired, filing of a motion of censure to the appropriate professional organizations, and civil prosecution under the relevant national or international statutes.
These safeguards mirror the principles from the Joint ECE/Eurostat Work Session on Statistical Data Confidentiality. Employees of the Minnesota Population Center who work with the census microdata to produce the harmonized database also sign agreements to respect the confidentiality of the data.
Citation requirements
Minnesota Population Center. Integrated Public Use Microdata Series, International: Version 6.4 [dataset]. Minneapolis: University of Minnesota, 2015. http://doi.org/10.18128/D020.V6.4.
Researchers should also acknowledge the statistical agency that originally produced the data:
Portugal, Portugal Instituto Nacional de Estatística (INE), XIII Recenseamento Geral da População e III Recenseamento Geral da Habitação
The licensing agreement for use of IPUMS-International data requires that users supply IPUMS-International with the title and full citation for any publications, research reports, or educational materials making use of the data or documentation.
Copies of such materials are also gratefully received at ipums@umn.edu.
Printed matter should be sent to:
IPUMS-International
Minnesota Population Center
University of Minnesota
50 Willey Hall
225 19th Avenue South
Minneapolis, MN 55455
Researchers should also acknowledge the statistical agency that originally produced the data:
Portugal, Portugal Instituto Nacional de Estatística (INE), XIII Recenseamento Geral da População e III Recenseamento Geral da Habitação
The licensing agreement for use of IPUMS-International data requires that users supply IPUMS-International with the title and full citation for any publications, research reports, or educational materials making use of the data or documentation.
Copies of such materials are also gratefully received at ipums@umn.edu.
Printed matter should be sent to:
IPUMS-International
Minnesota Population Center
University of Minnesota
50 Willey Hall
225 19th Avenue South
Minneapolis, MN 55455
Access authority
| Name | Affiliation | URL |
|---|---|---|
| IPUMS International | Minnesota Population Center | Link |
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
(c) Copyright 1991, Portugal Instituto Nacional de Estatística (INE) and Minnesota Population Center
Metadata production
DDI Document ID
DDI_PRT_1991_PHC_v01_M_v02_A_IPUMS
Producers
| Name | Abbreviation | Affiliation | Role |
|---|---|---|---|
| Minnesota Population Center | MPC | University of Minnesota | Integration Harmonization Documentation |
Date of Metadata Production
2016-04-25
DDI Document version
- v6.4 April 2016
Documentation of census data and harmonized variables as found in IPUMS-International. The International Household Survey Network (IHSN) contracted IPUMS International for generating DDI and Dublin Core-compliant metadata related to population and housing census datasets from developing countries. The objective was to provide countries with detailed metadata in a format compatible with the DDI standard used by most of these countries, with a view to guarantee the preservation of the data and metadata, and the publishing of metadata.
The intellectual rights (including copyright) for the data and metadata in IPUMS are retained by the countries under a Memorandum of Understanding with the contributing countries. IPUMS-International has distribution rights to the metadata and data. The XML documents generated by this process are viewed as a distribution of the metadata.
Fields edited by the World Bank are: DDI ID and study ID to match World Bank study naming convention, as well as DDI Document Version and Version Description to reflect changes included in version 6.4.
Previous version documented in the World Bank Microdata Library:
- v6.3 (August 2014)
Documentation of census data and harmonized variables as found in IPUMS-International. The International Household Survey Network (IHSN) contracted IPUMS International for generating DDI and Dublin Core-compliant metadata related to population and housing census datasets from developing countries. The objective was to provide countries with detailed metadata in a format compatible with the DDI standard used by most of these countries, with a view to guarantee the preservation of the data and metadata, and the publishing of metadata.
The intellectual rights (including copyright) for the data and metadata in IPUMS are retained by the countries under a Memorandum of Understanding with the contributing countries. IPUMS-International has distribution rights to the metadata and data. The XML documents generated by this process are viewed as a distribution of the metadata.
Fields edited by the World Bank are: DDI ID and study ID to match World Bank study naming convention, as well as DDI Document Version and Version Description to reflect changes included in version 6.4.
Previous version documented in the World Bank Microdata Library:
- v6.3 (August 2014)