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        <titl xml:lang="en">1970 British Cohort Study: Partnership Histories, 1986-2016</titl>
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      <abstract xml:lang="en">&lt;P&gt;Abstract copyright UK Data Service and data collection copyright owner.&lt;/P&gt;&lt;p&gt;The &lt;span style="font-style:italic"&gt;1970 British Cohort Study&lt;/span&gt; (BCS70) is a longitudinal birth cohort study, following a nationally representative sample of over 17,000 people born in England, Scotland and Wales in a single week of 1970. Cohort members have been surveyed throughout their childhood and adult lives, mapping their individual trajectories and creating a unique resource for researchers. It is one of very few longitudinal studies following people of this generation anywhere in the world.&lt;br&gt;&lt;br&gt;Since 1970, cohort members have been surveyed at ages 5, 10, 16, 26, 30, 34, 38, 42, 46, and 51. Featuring a range of objective measures and rich self-reported data, BCS70 covers an incredible amount of ground and can be used in research on many topics. Evidence from BCS70 has illuminated important issues for our society across five decades. Key findings include how reading for pleasure matters for children's cognitive development, why grammar schools have not reduced social inequalities, and how childhood experiences can impact on mental health in mid-life. Every day researchers from across the scientific community are using this important study to make new connections and discoveries.&lt;br&gt;&lt;br&gt;BCS70 is run by the &lt;a href="https://cls.ucl.ac.uk/cls-studies/1970-british-cohort-study/" target="_blank"&gt;Centre for Longitudinal Studies&lt;/a&gt; (CLS), a research centre in the UCL Institute of Education, which is part of University College London. The content of BCS70 studies, including questions, topics and variables can be explored via the &lt;a href="https://discovery.closer.ac.uk/item/uk.cls.bcs70/75fe4705-0c94-4f75-b1e6-ad9c61ffde26"&gt;CLOSER Discovery&lt;/a&gt; website.&lt;br&gt;&lt;br&gt;&lt;em&gt;How to access genetic and/or bio-medical sample data from a range of longitudinal surveys:&lt;/em&gt;&lt;br&gt;For information on how to access biomedical data from BCS70 that are not held at the UKDS, see the&amp;nbsp;&lt;a href="https://cls.ucl.ac.uk/data-access-training/genetic-data-and-biological-samples/" target="_blank"&gt;CLS Genetic data and biological samples&lt;/a&gt;&amp;nbsp;webpage.&lt;br&gt;&lt;br&gt;&lt;span style="font-style:italic"&gt;Secure Access datasets&lt;br&gt;&lt;/span&gt;Secure Access versions of BCS70 have more restrictive access conditions than versions available under the standard End User Licence (EUL). &lt;br&gt;&lt;/p&gt;</abstract><abstract xml:lang="en">&lt;p&gt;&lt;i&gt;1970 British Cohort Study: Partnership Histories, 1986-2016:&lt;/i&gt; &lt;br&gt; Data on live-in relationships lasting one month or more have been collected in all BCS70 sweeps from sweep 6 (age 30) as well as data on current live-in relationship at sweep 5 (age 23). The purpose of the Partnership Histories dataset is to merge all data on live-in relationships in successive sweeps into one longitudinal dataset.&lt;br&gt; &lt;br&gt; The focus of the questions asked at each sweep are about the relationship start date; whether married/became civil partner (sweep 8 and later) to this partner and if so the marriage/civil partnership dates; whether still together with this partner and if not the date that the relationship ended; how the relationship ended; if relevant whether divorced and divorce dates; the sex, marital status and age at start of relationship of the partner.&lt;br&gt; &lt;/p&gt; &lt;p class="x_MsoNormal"&gt;For the fourth edition (March 2021),&amp;nbsp;&lt;span&gt;both data files have been updated to include partnership data from the latest BCS70 data sweep (2016).&amp;nbsp;&lt;/span&gt;&lt;span&gt;Following Sweep 10 (2016, age 46), longitudinal datasets have been streamlined by removing cases which have never participated in any main sweep survey and are no longer being issued.&lt;/span&gt;&lt;/p&gt; &lt;p class="x_MsoNormal"&gt;&lt;/p&gt; &lt;p&gt;&lt;br&gt; &lt;/p&gt;</abstract><abstract xml:lang="en">&lt;B&gt;Main Topics&lt;/B&gt;:&lt;BR&gt;</abstract><abstract xml:lang="en">The study includes two datasets: &lt;ul&gt; &lt;li&gt;&lt;i&gt;BCS70 Partnership dataset&lt;/i&gt;: One record is recorded for each partnership. Cohabitation transformed into marriage is recorded as two separate partnerships&lt;/li&gt;&lt;li&gt;&lt;i&gt;BCS70 Partner dataset&lt;/i&gt;: One record is recorded for each partner. A cohabitation which has transformed into marriage is treated as one partner&lt;/li&gt;&lt;/ul&gt;</abstract>
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