October Household Survey 1998 - South Africa

Abstract
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The October Household Survey is an annual survey based on a survey of a large number of households (ranging from 16 000 in 1996 through to 30 000 in 1997 and 1998, depending on the availability of funding). It covers a range of development indicators, including unemployment rates (official and expanded), according to standard definitions of the International Labour Organisation (ILO).

Geographic coverage
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The survey had national coverage.

Analysis unit
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Households and individuals

Universe
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The survey covered households and household members in households in the nine provinces of South Africa

Kind of data
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Sample survey data

Sampling procedure
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A sample of 20 000 households was drawn in 2 000 enumerator areas (EAs) (that is 10 households per enumerator area). A two-stage sampling procedure was applied and the sample was stratified, clustered and selected to meet the requirements of probability sampling. The sample was based on the 1996 Population Census enumerator areas and the estimated number of people from the administrative records of the 1996 population Census. The sampled population excluded all prisoners in prisons, patients in hospitals, people residing in boarding houses and hotels (whether temporary or semi-permanent). The sample was explicitly stratified by province, Transitional Metropolitan Council (TMC)and District Council (DC). A square root method was used for the allocation of the sample EAs to the explicit strata.

Within each explicit stratum the EAs were stratified by simply arranging them in geographical order by magisterial district and, within the magisterial district, by EA. The allocated number of EAs was systematically selected with probability proportional to size in each stratum. The measure of size was the estimated number of people in Each EA. A systematic sample of 10 households was drawn.

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

Research instrument
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The data files in the October Household Survey 1997 (OHS 1997) correspond to the following sections in the questionnaire:
PERSON: Indivitual-level data from Section 1 and Section 4; BIRTHS: Data from Section 2; CHILDREN: Data from Section2; WORKER: Data from Section 3; MIGRANT: Data from Section 5; DEATHS: Data from Section 6; MIGRATION: Data from Section 7; DOMESTIC: Data from Section 8; HOUSE: Household-level data from Section 9

Errors in the marital codes in the original OHS 1998 questionnaire:
The questionnaire for the OHS 1998 originally provided by Statistics SA with the data files was incorrect. It was the OHS 1997 questionnaire with a OHS 1998 flap. The marital codes were different in the two surveys. In 1997, the codes for the variable Marital Status were:
1 Never married
2 Married - civil
3 Married - customary
4 Living together
5 Widowed
6 Divorced

In the 1998 survey, the codes for the variable Marital Status are:

1 Married - civil
2 Married - traditional (customary)
3 Living together
4 Widower/widow
5 Divorced/separated
6 Never married

DataFirst notified Statistics SA of this error on 13 July 2007 and they sent a corrected questionnaire. The correct questionnaire is version 2, available with the data since 2007.

Data appraisal
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Errors in the marital codes in the original OHS 1998 questionnaire:

The questionnaire for the OHS 1998 originally provided by Statistics SA with the data files was incorrect. It was the OHS 1997 questionnaire with a OHS 1998 flap. The marital codes were different in the two surveys. In 1997, the codes for the variable Marital Status were:
1 Never married
2 Married - civil
3 Married - customary
4 Living together
5 Widowed
6 Divorced

In the 1998 survey, the codes for the variable Marital Status are:

1 Married - civil
2 Married - traditional (customary)
3 Living together
4 Widower/widow
5 Divorced/separated
6 Never married

DataFirst notified Statistics SA of this error on 13 July 2007 and they sent a corrected questionnaire. The correct questionnaire is version 2, available with the data since 2007.

摘要
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十月家庭调查是一项年度调查，基于对大量家庭（从1996年的16,000户至1997年和1998年的30,000户，具体取决于资金的可获得性）的调研。调查涵盖了一系列发展指标，包括失业率（官方和扩展的），依据国际劳工组织（ILO）的标准定义。
地理覆盖范围
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调查具有全国性覆盖。
分析单元
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家庭和个人
总体
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调查涵盖了南非九个省份中的家庭及其成员。
数据类型
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样本调查数据
抽样程序
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在2,000个调查员区域（EAs）中抽取了20,000户家庭的样本（即每个调查员区域10户）。采用了两阶段抽样程序，并对样本进行了分层、聚类和选择，以满足概率抽样的要求。样本基于1996年人口普查的调查员区域和1996年人口普查的行政记录中估计的人口数量。样本人口排除了所有监狱囚犯、医院病人、寄宿学校和酒店（无论是临时还是半永久性）居民。样本明确按省份、过渡性大都市委员会（TMC）和地区委员会（DC）进行分层。样本调查员区域的分配采用平方根法。
在每个明确分层内，调查员区域按司法管辖区地理顺序排列，并在司法管辖区内部署调查员区域。每个分层内分配的调查员区域数量按规模比例系统性地选取。规模的衡量标准是每个调查员区域估计的人口数量。抽取了10户家庭作为系统性样本。
数据收集方式
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面对面 [f2f]
研究工具
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1997年十月家庭调查（OHS 1997）的数据文件与问卷的以下部分相对应：
PERSON：第1节和第4节的个人层级数据；BIRTHS：第2节数据；CHILDREN：第2节数据；WORKER：第3节数据；MIGRANT：第5节数据；DEATHS：第6节数据；MIGRATION：第7节数据；DOMESTIC：第8节数据；HOUSE：第9节的家庭层级数据
原始OHS 1998问卷婚姻代码中的错误：
原由南非统计局提供并与数据文件一起提供的OHS 1998问卷存在错误。这是带有OHS 1998封面的OHS 1997问卷。两次调查的婚姻代码不同。1997年，婚姻状况变量的代码为：
1 未婚
2 婚姻 - 民事
3 婚姻 - 习惯法
4 同居
5 丧偶
6 离异
1998年调查中，婚姻状况变量的代码为：
1 婚姻 - 民事
2 婚姻 - 传统（习惯法）
3 同居
4 寡妇/鳏夫
5 离异/分居
6 未婚
DataFirst于2007年7月13日通知了南非统计局这一错误，他们发送了更正后的问卷。正确的问卷版本为2，自2007年以来与数据一同提供。
数据评估
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原始OHS 1998问卷婚姻代码中的错误：
原由南非统计局提供并与数据文件一起提供的OHS 1998问卷存在错误。这是带有OHS 1998封面的OHS 1997问卷。两次调查的婚姻代码不同。1997年，婚姻状况变量的代码为：
1 未婚
2 婚姻 - 民事
3 婚姻 - 习惯法
4 同居
5 丧偶
6 离异
1998年调查中，婚姻状况变量的代码为：
1 婚姻 - 民事
2 婚姻 - 传统（习惯法）
3 同居
4 寡妇/鳏夫
5 离异/分居
6 未婚
DataFirst于2007年7月13日通知了南非统计局这一错误，他们发送了更正后的问卷。正确的问卷版本为2，自2007年以来与数据一同提供。