Cape Area Panel Study 2002-2009, Waves 1-5 - South Africa

Abstract
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The Cape Area Panel Study (CAPS) is a longitudinal study of the lives of youths and young adults in metropolitan Cape Town, South Africa. The first wave of the study collected interviews from about 4800 randomly selected young people age 14-22 in August-December, 2002. Wave 1 also collected information on all members of these young people’s households, as well as a random sample of households that did not have members age 14-22. A third of the youth sample was re-interviewed in 2003 (Wave 2a) and the remaining two thirds were re-visited in 2004 (Wave 2b). The full youth sample was then re-interviewed in 2005 (Wave 3), 2006 (Wave 4) and 2009 (Wave 5). Wave 3 includes interviews with approximately 2000 co-resident parents of young adults, while wave 4 also includes interviews with a sample of older adults (all individuals from the original 2002 households who were born on or before 1 January 1956) and all children born to the female young adults. The fifth wave comprises all respondents interviewed in any of the Waves 2a, 3 or 4. In 2010 there were telephonic follow-ups or proxy interviewed that tried to capture those that were not successfully interviewed during the course of the 2009 fieldwork. The study covers a wide range of outcomes, including schooling, employment, health, family formation, and intergenerational support systems.

CAPS began in 2002 as a collaborative project of the Population Studies Center in the Institute for Social Research at the University of Michigan and the Centre for Social Science Research at the University of Cape Town (UCT). Other units involved in subsequent waves include UCT’s Southern African Labour and Development Research Unit and the Research Program in Development Studies at Princeton University. Primary funding is provided by the National Institute of Child Health and Human Development of the U.S. National Institutes of Health (NIH). Additional funding has been provided by the Office of AIDS Research, the Fogarty International Center, and the National Institute of Aging of NIH, and by grants from the Andrew W. Mellon Foundation to the University of Michigan and the University of Cape Town.

Geographic coverage
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Metropolitan Cape Town

Analysis unit
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The unit of analysis for this survey includes households and individuals.

Universe
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The survey covered youths and young adults in Metropolitan Cape Town, South Africa.

Kind of data
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Sample survey data [ssd]

Sampling procedure
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The CAPS household sample was drawn through a two-stage process. First, the 'enumeration areas' (EAs) used for the 1996 Population Census were divided into three strata according to whether the population of each was predominantly African, predominantly coloured or predominantly white. A sample of primary sampling units (PSUs) was selected within each stratum with probability proportional to size. Within each PSU a sample of 25 screener households was drawn. The Overview and Technical Documentation for Waves 1-2-3-4-5 provides a more detailed discussion of the sampling design. Data users should take the stratification and clustering into account for all analyses. Strata and PSUs are identified by the majpop and cluster variables respectively.

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

Research instrument
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• Wave 1 (2002) included a household questionnaire, a young adult questionnaire and a literacy and numeracy evaluation questionnaire
• Wave 2a (2003-2004) and 2b (2004) both included young adult questionnaires only
• Wave 3 (2005) included a household questionnaire, a parent questionnaire and a young adult questionnaire
• Wave 4 (2006) included a household questionnaire, an older adult questionnaire, a young adult questionnaire, a young adult proxy questionnaire and a child questionnaire
• Wave 5 (2009) included a young adult questionnaire, young adult telephonic questionnaire and a young adult proxy questionnaire

摘要
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开普地区横断面研究（CAPS）系南非开普敦大都市地区青少年和年轻成人生活的纵向研究。该研究的第一波收集了2002年8月至12月期间大约4800名随机选择的14至22岁年轻人的访谈资料。第一波研究还收集了这些年轻人家庭所有成员的信息，以及没有14至22岁成员的随机样本家庭的信息。三分之一青少年样本在2003年（第二波a）进行了再次访谈，其余三分之二在2004年（第二波b）进行了回访。随后，完整的青少年样本在2005年（第三波）、2006年（第四波）和2009年（第五波）进行了再次访谈。第三波包括约2000名与年轻成人共同居住的父母的访谈，第四波还包括了老年成人样本的访谈（所有出生于或之前于1956年1月1日的2002年家庭的原成员）以及所有女性年轻成人生下的所有儿童的访谈。第五波包括所有在第二波a、第三波或第四波中被访谈的受访者。2010年，进行了电话追踪或代理访谈，试图捕捉到在2009年实地调查过程中未能成功访谈的个体。该研究涵盖了广泛的成果，包括教育、就业、健康、家庭形成和代际支持系统。

CAPS始于2002年，是密歇根大学社会研究所人口研究中心与开普敦大学（UCT）社会科学研究中心合作的项目。后续波次中参与的单位还包括开普敦大学南非劳动与发展研究单位和普林斯顿大学发展研究项目。主要资金由美国国家卫生研究院（NIH）的国家儿童健康和人类发展研究所提供。此外，资金还由艾滋病研究办公室、 Fogarty国际中心和NIH的国家老龄化研究所提供，以及由安德鲁·W·梅隆基金会向密歇根大学和开普敦大学提供的赠款。

地理范围
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开普敦大都市地区

分析单元
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本调查的分析单元包括家庭和个人。

总体
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调查涵盖了南非开普敦大都市地区的青少年和年轻成人。

数据类型
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样本调查数据 [ssd]

抽样程序
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CAPS家庭样本是通过两阶段过程抽取的。首先，根据每个地区的居民人口是否以非洲人、有色人种或白人为主，将用于1996年人口普查的'计数区域'（EAs）分为三个层次。在每个层次内，根据规模比例选择了样本一级抽样单位（PSUs）。在每个PSU内，抽取了25个筛查家庭样本。第一至五波次的概述和技术文件提供了关于抽样设计的更详细讨论。数据使用者应考虑所有分析中的分层和聚类。层次和PSUs分别由majpop和cluster变量标识。

数据收集方式
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面对面 [f2f]

研究工具
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• 第一波（2002年）包括家庭问卷、年轻成人问卷和读写能力评估问卷
• 第二波a（2003-2004年）和第二波b（2004年）仅包括年轻成人问卷
• 第三波（2005年）包括家庭问卷、父母问卷和年轻成人问卷
• 第四波（2006年）包括家庭问卷、老年成人问卷、年轻成人问卷、年轻成人代理问卷和儿童问卷
• 第五波（2009年）包括年轻成人问卷、年轻成人电话问卷和年轻成人代理问卷