Study Number 5881 - Quarterly Labour Force Survey, July - September, 1994
DATA PROCESSING NOTES
Data Archive Processing Standards
The data were processed to the UK Data Archive's A* standard. This is the
Archive's highest standard, and means that an extremely rigorous and
comprehensive series of checks was carried out to ensure the quality of the data
and documentation.Firstly, checks were made that the number of cases and
variables matched the depositor's records. Secondly, checks were made that all
variables had comprehensible variable labels and all nominal (categorical)
variables had comprehensible value labels. Where possible, either with reference
to the documentation and/or in communication with the depositor, labels were
accordingly edited or created. Thirdly, logical checks were performed to ensure
that nominal (categorical) variables had values within the range defined (either
by value labels or in the depositor's documentation). Lastly, any data or
documentation that breached confidentiality rules were altered or suppressed to
All notable and/or outstanding problems discovered are detailed under the 'Data
and documentation problems' heading below.
Data and documentation problems
No problems encountered.
This study was deposited in 2008, as a result of the move from seasonal to calendar quarters for the QLFS, and the reweighting process to 2007-2008 population figures. It combines data from previously-available QLFS seasonal quarter datasets. The depositor has advised that small revisions to the data may have been made during this process, but they should not be significant.
Users should note that the weighting variables included in the data file are now 'pwt07' and 'piwt07', in accordance with the recent reweighting of LFS data to 2007-2008 population estimates. See documentation for further details.
Data conversion information
From January 2003 onwards, almost all data conversions have been performed
using software developed by the UKDA. This enables standardisation of the
conversion methods and ensures optimal data quality. In addition to its own data
processing/conversion code, this software uses the SPSS and Stat/Transfer
command processors to perform certain format translations. Although data
conversion is automated, all data files are also subject to visual inspection by
a UKDA data processing officer.
With some format conversions data, and more especially internal metadata (i.e.
variable labels, value labels, missing value definitions, data type
information), will inevitably be lost or truncated owing to the differential
limits of the proprietary formats.A UKDA Data Dictionary file (in rich text
format), corresponding to each data file, is usually provided for viewing and
searching the internal metadata as it existed in the originating format. These
files are called:
[data file name]_UKDA_Data_Dictionary.rtf
Important information about the data format supplied
The links below provide important information about the format in which you have
been supplied the data. Some of this information is specific to the ingest
of the data, that is the format in which the UKDA was supplied the
data in. The ingest format for this study was
Please click below to find out information about the format that you have
been supplied the data in
Tab-delimited text (*.tab)
MS Excel (*.xls files)
SAS (supplied as *.dat and *.sas)
MS Access (*.mdb files)
Conversion of documentation formats
Electronic and paper documentation supplied with this study is usually
incorporated into the UKDA User Guide (in PDF format). The conversion programmes
used are the latest versions of Adobe PDF Writer for electronic documentation
and Adobe Paper Capture (Acrobat 'plugin' version) for paper documentation.
Occasionally, someof the electronic documentation cannot be usefully converted
to PDF (e.g. MS Excel files with wide worksheets) and this is supplied ina more
appropriate format. All User Guides are fully bookmarked.