2026-05-14T17:11:45Z https://datacatalogue.cessda.eu/oai-pmh/v0/oai

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DDI2.5 XML CODEBOOK RECORD FOR STUDY NUMBER 5795 Millennium Cohort Study: Age 5, Sweep 3, 2006 579510.5255/UKDA-SN-5795-6 University of London, Institute of Education, Centre for Longitudinal Studies Copyright Centre for Longitudinal Studies, UCL Social Research Institute Northern Ireland ExecutiveEconomic and Social Research CouncilScottish GovernmentDepartment for Work and PensionsDepartment of HealthOffice for National StatisticsWelsh Assembly GovernmentDepartment for Education and Skills UK Data Service 18 March 2008 AGEBANK ACCOUNTSVOTINGACCIDENTSALLERGIESANTENATAL CAREASTHMANORTHERN IRELAND POLITICAL PARTIESALCOHOL USEBREAST-FEEDINGBRONCHITISCANCERCHILD DAY CARECHILD NUTRITIONCHILDRENCOHABITATIONCOMPUTERSCONSUMER GOODSDELIVERY (PREGNANCY)DERMATITISDIABETESDIGESTIVE SYSTEM DISORDERSDOMESTIC VIOLENCEEDUCATIONEDUCATIONAL BACKGROUNDEMOTIONAL STATESEMPLOYEESFAMILY COHESIONFAMILY PLANNINGFATHERSFERTILITY TREATMENTFINANCIAL RESOURCESFINANCIAL SUPPORTFOSTER PARENTSFRIENDSHAPPINESSHEARING TESTSHEATING SYSTEMSHOME OWNERSHIPHOMELESSNESSHOUSEHOLDSHOUSINGHOUSING CONDITIONSILL HEALTHINCOMEINTERNETLANGUAGES USED AT HOMEPARTNERSHIP HISTORY (PERSONAL)MARRIAGEMATERNITY PAYMEDICAL CAREMIGRAINESETHNIC CONFLICTSAVINGSSELF-ESTEEMCHILD CARECHILD DEVELOPMENTDIVORCEDOMESTIC RESPONSIBILITIESECONOMIC ACTIVITYEMPLOYMENT HISTORYEPILEPSYFAMILIESHEIGHT (PHYSIOLOGY)IMMUNIZATIONINFANTSINJURIESLITERACYMATERNITY LEAVENUMERACYOPEN SPACES AND RECREATIONAL AREASPARENT-CHILD RELATIONSHIPPRIVATE GARDENSSMOKINGSOCIAL SECURITY BENEFITSSUPERVISORY STATUSWORKING MOTHERSCRIMINAL DAMAGEETHNIC GROUPSFOSTER CHILDRENINTERPERSONAL CONFLICTINTERPERSONAL RELATIONSMIDWIVESMIXED MARRIAGESNEIGHBOURSPARENT PARTICIPATIONPARENTAL ROLEPATERNITY LEAVEPOLITICAL INTERESTPUBLIC TRANSPORTSELF-EMPLOYEDSOCIAL SUPPORTSPOUSESATTITUDESBOTTLE-FEEDINGCENTRAL GOVERNMENTCHILD BEHAVIOURCHILD SUPPORT PAYMENTSCOMMUNITIESCOSTSDEPRESSIONDOMESTIC APPLIANCESFATIGUE (PHYSIOLOGY)GRANDPARENTSHEALTHHEARING IMPAIRMENTSHOSPITALIZATIONMOTOR VEHICLESPOLITICAL ALLEGIANCEPREGNANCYREADING (ACTIVITY)RELIGIOUS ATTENDANCESOCIAL ATTITUDESTAX RELIEFTELEPHONESWAGESBACK PAINMOTHERSNEWSPAPER READERSHIPOVERTIMEPARENTSPERSONAL CONTACTPREGNANCY COMPLICATIONSQUALIFICATIONSREFUSERELIGIOUS AFFILIATIONRELIGIOUS CONFLICTRENTED ACCOMMODATIONRESIDENTIAL CHILD CARERESIDENTIAL MOBILITYSAFETY EQUIPMENTSHOPSTIMETOLERANCEVOTING BEHAVIOURWEIGHT (PHYSIOLOGY)WIDOWEDHOURS OF WORKPOLITICAL PARTIESEDUCATIONAL ASSESSMENTABILITY EVALUATIONEDUCATIONAL MEASUREMENTSEDUCATIONAL TESTSEMOTIONAL DEVELOPMENTSPEECHREADING SKILLSWRITING SKILLSCOMMUNICATION SKILLSINDIVIDUAL DEVELOPMENTDEVELOPMENTAL PSYCHOLOGYLEARNINGSCHOOLTEACHERSPRIMARY EDUCATION ChildrenFamily life and marriage Abstract copyright UK Data Service and data collection copyright owner.Background: The Millennium Cohort Study (MCS) is a large-scale, multi-purpose longitudinal dataset providing information about babies born at the beginning of the 21st century, their progress through life, and the families who are bringing them up, for the four countries of the United Kingdom. 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 National Child Development Study, held at the UK Data Archive under GN 33004, and the 1970 Birth Cohort Study, 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, and include disadvantaged areas of England</li></ul>Further information about the MCS can be found on the <a href="https://cls.ucl.ac.uk/cls-studies/millennium-cohort-study/" target="_blank" style="background-color: rgb(255, 255, 255);">Centre for Longitudinal Studies</a> web pages.The content of MCS studies, including questions, topics and variables can be explored via the <a href="https://discovery.closer.ac.uk/item/uk.cls.mcs/0d8a7220-c61b-4542-967d-a40cb5aca430">CLOSER Discovery</a> website.  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, the fifth sweep (MCS5) in 2012-2013, when they were eleven years old, the sixth sweep (MCS6) in 2015, when they were fourteen years old, and the seventh sweep (MCS7) in 2018, when they were seventeen years old. Safeguarded versions of MCS studies: The Safeguarded versions of MCS1, MCS2, MCS3, MCS4, MCS5, MCS6 and MCS7 are held under UK Data Archive SNs 4683, 5350, 5795, 6411, 7464, 8156 and 8682 respectively. The longitudinal family file is held under SN 8172. Polygenic Indices Polygenic indices are available under Special Licence SN 9437. Derived summary scores have been created that combine the estimated effects of many different genes on a specific trait or characteristic, such as a person's risk of Alzheimer's disease, asthma, substance abuse, or mental health disorders, for example. These polygenic scores can be combined with existing survey data to offer a more nuanced understanding of how cohort members' outcomes may be shaped.  Sub-sample studies: 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 EUL SN 5559). Also, birth registration and maternity hospital episodes for the MCS respondents are held as a separate dataset (see EUL SN 5614). Release of Sweeps 1 to 4 to Long Format (Summer 2020) To support longitudinal research and make it easier to compare data from different time points, all data from across all sweeps is now in a consistent format. The update affects the data from sweeps 1 to 4 (from 9 months to 7 years), which are updated from the old/wide to a new/long format to match the format of data of sweeps 5 and 6 (age 11 and 14 sweeps). The old/wide formatted datasets contained one row per family with multiple variables for different respondents. The new/long formatted datasets contain one row per respondent (per parent or per cohort member) for each MCS family. Additional updates have been made to all sweeps to harmonise variable labels and enhance anonymisation.   How to access genetic and/or bio-medical sample data from a range of longitudinal surveys: For information on how to access biomedical data from MCS that are not held at the UKDS, see the <a href="https://cls.ucl.ac.uk/data-access-training/genetic-data-and-biological-samples/" target="_blank" style="background-color: rgb(255, 255, 255);">CLS Genetic data and biological samples</a> webpage. Secure Access datasets: Secure Access versions of the MCS have more restrictive access conditions than versions available under the standard Safeguarded Licence or Special Licence (see 'Access data' tab above). Secure Access versions of the MCS include:<ul><li>detailed sensitive variables not available under EUL. These have been grouped thematically and are held under SN 8753 (socio-economic, accommodation and occupational data), SN 8754 (self-reported health, behaviour and fertility), SN 8755 (demographics, language and religion) and SN 8756 (exact participation dates). These files replace previously available studies held under SNs 8456 and 8622-8627 </li><li>detailed geographical identifier files which are grouped by sweep held under SN 7758 (MCS1), SN 7759 (MCS2), SN 7760 (MCS3), SN 7761 (MCS4), SN 7762 (MCS5 2001 Census Boundaries), SN 7763 (MCS5 2011 Census Boundaries), SN 8231 (MCS6 2001 Census Boundaries), SN 8232 (MCS6 2011 Census Boundaries), SN 8757 (MCS7), SN 8758 (MCS7 2001 Census Boundaries) and SN 8759 (MCS7 2011 Census Boundaries). These files replace previously available files grouped by geography SN 7049 (Ward level), SN 7050 (Lower Super Output Area level), and SN 7051 (Output Area level)</li><li>linked education administrative datasets for Key Stages 1, 2, 4 and 5 held under SN 8481 (England).  This replaces previously available datasets for Key Stage 1 (SN 6862) and Key Stage 2 (SN 7712) </li><li>linked education administrative datasets for Key Stage 1 held under SN 7414 (Scotland)</li><li>linked education administrative dataset for Key Stages 1, 2, 3 and 4 under SN 9085 (Wales) </li><li>linked NHS Patient Episode Database for Wales (PEDW) for MCS1 – MCS5 held under SN 8302</li><li>linked Scottish Medical Records data held under SNs 8709, 8710, 8711, 8712, 8713 and 8714;</li><li>Banded Distances to English Grammar Schools for MCS5 held under SN 8394</li><li>linked Health Administrative Datasets (Hospital Episode Statistics) for England for years 2000-2019 held under SN 9030</li><li>linked Hospital of Birth data held under SN 5724.</li></ul>The linked education administrative datasets held under SNs 8481,7414 and 9085 may be ordered alongside the MCS detailed geographical identifier files only if sufficient justification is provided in the application.  Researchers applying for access to the Secure Access MCS datasets should indicate on their ESRC Accredited Researcher application form the EUL dataset(s) that they also wish to access (selected from the MCS Series <a href="https://beta.ukdataservice.ac.uk/datacatalogue/series/series?id=2000031#!/access-data" target="_blank" style="background-color: rgb(255, 255, 255);">Access</a> web page).While many of the areas covered in MCS3 built on the information already collected in MCS1 (age 9 months) and MCS2 (age 3 years), a number of new items were also included, such as the measurement of waist circumference. Information was gathered from the cohort members' parents or guardians for the main Parent Interview. In addition there were four cognitive assessments and three physical measurements of the cohort child, and a paper self-completion questionnaire for up to two older siblings aged 10-15 years. The Teacher Survey and Foundation Stage Profile data and documentation are available in a separate study: SN 6847 - Millennium Cohort Study: Third Survey Teacher Survey and Foundation Stage Profile, 2006. 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" style="background-color: rgb(255, 255, 255);">SN 8172</a>. Update 20 March 2020: The datasets became available in a long format (one row per respondent) compared to the wide old format (one row per family). Information on the restructure of the variables from long to wide is provided in Part 9 of the MCS 1-5 User Guide. Help with the distribution of the variables in datasets is provided in the MCS1-4_Wide_Long_Correspondence_v* and in the MCS_Longitudinal_Data_Dictionary. November 2023: We are aware that some errors exist in the derived variable datasets. Please do not use until next updated. This study now includes the data and documentation from the Teacher Survey completed at Sweep 3 which were previously available under SN 6847. For the ninth edition (January 2022), a new data file mcs3_family_interview has been added due to the family level data being split out from the parent-level data to make future merging with MCS8 onwards easier. Two data files (mcs3_parent_interview and mcs3_parent_cm_interview) have been updated to include variables that were missed from the previous edition due to a technical error.  In addition, mcs3_hhgrid has had some data edits applied. Also the following data file specific changes have been made: mcs3_hhgrid Total number of cases has changed due to data updates. For sample size please check the longitudinal family file. December 2024: The family_interview data file has been removed. The family_interview datasets contained some variables that have been moved to Secure Access. The datasets will be replaced at a future redeposit.Main Topics: The files currently included in the MCS3 study comprise data from the main Parent Interview, the Household Grid, Child Measurement and Assessment and the Older Siblings questionnaire. The Parent Interview file comprises data from the Main Respondent, Partner Respondent and Proxy Respondent questionnaires, which covered household information; family context; early education, schooling and childcare; child and family activities and child's behaviour; parenting activities; child's health; parent's health; employment, income and education; housing and local area; and other matters. Information on the cohort child's older siblings was also gathered from the parent/partner by self-completion questionnaire, but these data are contained in the 'Older Siblings file'. The Household Grid file comprises demographic data on households and additional derived variables. The Child Assessments and Measurements file includes cognitive and physical measurements, including the 'Story of Sally and Anne' cognitive protocol; the British Ability Scales covering Picture Similarities, Naming Vocabulary and Pattern Construction; height; weight; and waist circumference. The Older Siblings file comprises data from the older siblings self-completion section of the main questionnaire, and from the self-completion questionnaire given to older siblings aged 10-15, which covered leisure time activities; extra activities at school; classes outside school; home life; health; school; behaviour; and perceptions of the local area. January 2006 - December 200601 January 200631 December 2006 EnglandWalesScotlandNorthern IrelandUnited Kingdom IndividualsFamilies/householdsNational The sample population for MCS was drawn from all live births in the United Kingdom over 12 months (from 1 September 2000 in England and Wales and for 59 weeks from 22 November 2000 in Scotland and Northern Ireland). Numeric Longitudinal/panel/cohort Multi-stage stratified random sample Face-to-face interviewSelf-administered questionnairePsychological measurements and testsObservationPhysical measurements and tests The Data Collection is available to UK Data Service registered users subject to the <a href="https://ukdataservice.ac.uk/app/uploads/cd137-enduserlicence.pdf" target="_blank">End User Licence Agreement</a>.Commercial use of the data requires approval from the data owner or their nominee. The UK Data Service will contact you.Personal/genealogical use of these data is not permitted. Additional conditions of use apply:I agree not to use nor attempt to use the Data Collections to identify the individuals from which the study sample was selected, nor to claim to have done so; andI agree not to link between the research identifiers supplied by the UK Data Service [MCSID] and any other identifiers previously issued. 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