NEWS FROM THE ONS

ONS Longitudinal Study Refresh

The annual refresh of vital event registrations linked to the Office for
National Statistics Longitudinal Study (ONS LS) was completed in July 2009.
Researchers using the LS now have access to an extra year of vital event
information to use in their research. Information on vital events are now
available for 2007 with the exception of cancer registrations, which are
available for 2006.

Longitudinal studies deal with change over time among individuals or
groups. The ONS LS contains linked census and vital event data for one per
cent of the population of England and Wales.

The ONS actively promotes wide use of the LS while maintaining the
confidentiality of the individuals in the sample.  LS records available for
analysis are anonymised but the database contains individual-level data
that have not been aggregated or disguised. To ensure confidentiality,
these microdata are only held at ONS sites and can only be accessed from a
secure area known as the Virtual Microdata Laboratory (VML). Support
officers are available to help you extract and use the data. LS users can
be sent aggregated data in the form of tabulations. Aggregated data are
checked using LS Clearance Protocol to ensure no statistics can be produced
that are likely to identify an individual. Researchers who need to work
with individual-level data may visit the VML in London to analyse their
data.

For further information or for an informal discussion about using the LS,
contact:

Academic users
Email: [log in to unmask]
Website: www.celsius.lshtm.ac.uk

Government and other non-academic users
Tel: +44 (0) 1633 45 5936
Email: [log in to unmask]
Website: www.ons.gov.uk/about/who-we-are/our-services/longitudinal-study



Chris Marshall
Research & Computing Support Officer
CeLSIUS
Tel: 0207 014 2259 (ONS)
       0207 299 4670 (LSHTM)


For the latest data on the economy and society consult National Statistics at http://www.statistics.gov.uk

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