Millennium Cohort Study: Second Survey, 2003-2005

Further objectives for MCS2 were as follows:<ul><li>to chart continuity and change since the age of nine months in the child's family and parenting environment</li><li>to chart the child's transitions and adaptations to settings and relationships outside the immediate home and family</li><li>to assess key aspects of the child's physical, cognitive, social and emotional development</li><li>to maximise longitudinal potential for predicting and explaining future development</li><li>to 'recapture' information not collected at the first sweep</li></ul><i>Latest edition:</i><br>
For the 9th edition (March 2017), the Index of Multiple Deprivation (IMD) variables in the geographically-linked file have been updated to correct errors.<br>
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May 2017: The longitudinal family file is now available separately under <a href="https://discover.ukdataservice.ac.uk/Catalogue/?sn=8172" title="Millennium Cohort Study: Longitudinal Family File, 2001-2015">SN 8172</a>.<br>
<i>Background</i>:<br>
The original objectives of the first MCS survey, as laid down in the proposal to the Economic and Social Research Council (ESRC) in March 2000, were:<ul><li>to chart the initial conditions of social, economic and health advantages and disadvantages facing children born at the start of the 21st century, capturing information that the research community of the future will require</li><li>to provide a basis for comparing patterns of development with the preceding cohorts (the <i>National Child Development Study</i>, held at the UK Data Archive under GN 33004, and the <i>1970 Birth Cohort Study</i>, held under GN 33229)</li><li>to collect information on previously neglected topics, such as fathers' involvement in children's care and development</li><li>to focus on parents as the most immediate elements of the children's 'background', charting their experience as mothers and fathers of newborn babies in the year 2000, recording how they (and any other children in the family) adapted to the newcomer, and what their aspirations for her/his future may be</li><li>to emphasise intergenerational links including those back to the parents' own childhood</li><li>to investigate the wider social ecology of the family, including social networks, civic engagement and community facilities and services, splicing in geo-coded data when available</li></ul>Additional objectives subsequently included for MCS were:<ul><li>to provide control cases for the national evaluation of Sure Start (a government programme intended to alleviate child poverty and social exclusion)</li><li>to provide samples of adequate size to analyse and compare the smaller countries of the United Kingdom</li></ul>The first sweep (MCS1) interviewed both mothers and (where resident) fathers (or father-figures) of infants included in the sample when the babies were nine months old, and the second sweep (MCS2) was carried out with the same respondents when the children were three years of age. The third sweep (MCS3) was conducted in 2006, when the children were aged five years old, the fourth sweep (MCS4) in 2008, when they were seven years old, and the fifth sweep (MCS5) in 2012-2013, when they were eleven years old. The sixth sweep (MCS6) was conducted in 2015 and 2016, when the children were 14 years old.<br>
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<i>Sub-sample studies</i>:<br>
Some studies based on sub-samples of MCS have also been conducted, including a study of MCS respondent mothers who had received assisted fertility treatment, conducted in 2003 (see SN 5559). Also, birth registration and maternity hospital episodes for the MCS respondents are held as a separate dataset (see SN 5614).<br>
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<i>Weighting</i>:<br>
Users should note that the weighting section in the 'Guide to the Datasets' document recommends analysis in Stata, as SPSS is not currently able to weight the data using the survey design factors. The depositor is working on a solution for SPSS, but this is not yet available. A Stata version of the dataset is available for download by registered users, alongside the SPSS and tab-delimited versions.<br>
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<i>MCS web pages</i>:<br>
Further information about the MCS can be found on the <a href="http://www.cls.ioe.ac.uk" title="Centre for Longitudinal Studies" target="_blank">Centre for Longitudinal Studies</a> website.<br>
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<i>How to access genetic and/or bio-medical sample data from a range of longitudinal surveys:</i><br>
A useful overview of the governance routes for applying for genetic and bio-medical sample data, which are not available through the UK Data Service, can be found at <a href="http://www.metadac.ac.uk/data-access-through-metadac/" title="Governance of data and sample access">Governance of data and sample access</a> on the METADAC (Managing Ethico-social, Technical and Administrative issues in Data Access) website.<br>
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MCS2的进一步目标如下：
- 记录儿童自9个月大以来其家庭及养育环境的连续性与变化
- 记录儿童向家庭以外环境及关系的过渡与适应过程
- 评估儿童身体、认知、社交及情感发展的关键方面
- 最大化纵向研究在预测与解释未来发展方面的潜力
- 补采首次调查未收集的信息
<i>最新版本：</i>
第九版（2017年3月）中，地理关联文件内的多重剥夺指数（Index of Multiple Deprivation, IMD）变量已更新以纠正错误。

<i>背景：</i>
首次MCS调查的原始目标，如2000年3月向经济与社会研究理事会（Economic and Social Research Council, ESRC）提交的提案中所规定，包括：
- 记录21世纪初出生儿童所面临的社会、经济及健康优势与劣势的初始状况，收集未来研究界所需的信息
- 为与先前队列（英国数据档案馆（UK Data Archive）中编号GN 33004的全国儿童发展研究，以及编号GN 33229的1970年出生队列研究）的发展模式对比提供基础
- 收集此前被忽视主题的信息，例如父亲在儿童照料与发展中的参与情况
- 聚焦父母作为儿童“背景”的最直接要素，记录他们在2000年作为新生儿父母的经历，以及他们（和家庭中其他儿童）如何适应新成员，还有他们对孩子未来的期望
- 强调代际联系，包括追溯至父母自身童年的联系
- 调查家庭更广泛的社会生态，包括社交网络、公民参与及社区设施与服务，并在可用时整合地理编码数据
MCS随后新增的目标包括：
- 为“确保开端计划”（Sure Start，一项旨在缓解儿童贫困与社会排斥的政府项目）的全国评估提供对照案例
- 提供足够规模的样本，以分析和比较英国的各小成员国
首次调查（MCS1）在婴儿9个月大时采访了样本中婴儿的母亲及（若同住）父亲（或父亲角色者）；第二次调查（MCS2）在儿童3岁时对相同受访者进行；第三次调查（MCS3）于2006年开展，此时儿童5岁；第四次调查（MCS4）于2008年开展，此时7岁；第五次调查（MCS5）于2012-2013年开展，此时11岁；第六次调查（MCS6）于2015-2016年开展，此时14岁。

<i>子样本研究：</i>
还开展了一些基于MCS子样本的研究，包括2003年对接受辅助生育治疗的MCS受访母亲的研究（见SN 5559）。此外，MCS受访者的出生登记及产科住院记录作为单独数据集保存（见SN 5614）。

<i>权重处理：</i>
用户需注意，《数据集指南》文档中的权重部分建议使用Stata进行分析，因为SPSS目前无法利用调查设计因素对数据进行加权。数据提供者正在开发SPSS的解决方案，但尚未可用。注册用户可下载数据集的Stata版本，同时提供SPSS及制表符分隔版本。

<i>MCS网页：</i>
更多关于MCS的信息可在纵向研究中心（Centre for Longitudinal Studies）网站查询。

<i>如何获取多类纵向调查的基因及/或生物医学样本数据：</i>
关于申请基因及生物医学样本数据的治理路径概述（这些数据无法通过英国数据服务（UK Data Service）获取），可在METADAC（数据访问伦理社会、技术与管理问题管理中心）网站的“数据与样本访问治理”页面查询。