XII Recenseamento Geral da População e II Recenseamento Geral da Habitação 1981 - IPUMS Subset - Portugal

Abstract
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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.

Geographic coverage
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National coverage

Analysis unit
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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.

Universe
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9,833,014

Kind of data
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Census/enumeration data [cen]

Sampling procedure
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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): 492,289

Mode of data collection
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Face-to-face [f2f]

Research instrument
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One questionnaire for each of the following statistical units: building, housing unit, household, individual, and "collective questionnaire" (for groups of individuals presents but not residents).

IPUMS-International项目致力于编纂、保存、协调和传播全球各国的人口普查微观数据。该项目收集了世界上最大的公开可用人口普查样本档案。数据在不同国家和地区以及时间上进行了统一的编码和记录，以便利比较研究。IPUMS-International通过网络传播系统免费向合格的研究人员提供这些数据。

IPUMS项目是由明尼苏达人口中心、国家统计局和国际数据档案馆的合作项目。主要资金由美国国家科学基金会和国家儿童健康与人类发展研究所的人口和行为科学分支提供。此外，明尼苏达大学研究副校长的办公室、明尼苏达人口中心以及Sun Microsystems公司也提供了额外支持。

地理覆盖范围：

全国范围

分析单位：

住宅

识别的单元：

- 住宅：是
- 空置单元：是
- 家庭：是
- 个人：是
- 团体住宿：是

单元描述：

- 住宅：结构上独立且设计用于在固定地点永久居住的人类居住空间。在普查时，它们并非完全用于其他目的，或实际上在普查时是至少一个人的主要常住地。
- 家庭：居住在同一住宅内，彼此之间存在亲属关系（无论是法定还是事实上的）的一群人。一个单独居住在独立住宅单位中的人，或作为房客占用住宅单位的一个单独房间（或房间），但与其他居住者没有亲属关系的人，也属于家庭。
- 团体住宿：居住在集体住宅单位（机构）内的一群人，无论他们之间的家庭关系如何，他们都遵守共同的规则，是机构目的的受益者，并受该群体内部或外部的特定实体的管理。

总体：

9,833,014

数据类型：

人口普查/人口普查数据 [cen]

抽样程序：

微观数据来源：葡萄牙国家统计局（INE)

样本设计：系统性的，每20个住宅/住房单元中选取一个，排除集体住宅，从每个NUTS II的第一个住宅开始。

样本单元：私有住宅的住宅；集体住宅的个人

样本比例：5%

样本量（个人记录）：492,289

数据收集方式：

面对面 [f2f]

研究工具：

每个以下统计单位使用一份问卷：建筑、住房单元、家庭、个人以及“集体问卷”（用于呈现但非居民的个体群体）。