SN: 33071	National Food Survey 1974 -

Quality of documentation
A proportion of documentation for all the National Food Survey studies 
originates in paper format; this  paper documentation has been scanned in and 
converted to PDF.  The quality of some of the pages in the studies ARE POOR, 
due to the poor quality of the originals.

Completeness of documentation
Please note that some of the original elements of the documentation were not 
available for every year, especially the older studies.  Wherever possible 
documents have been substituted with similar items from different years of the National 
Food Survey.

Users of earlier years of the survey who are having difficulty ascertaining which data are in which files are recommended to refer to later years of the documentation, specifically the bookmarked section entitled "Description of data files (SPSS export).  For SN 4512 National Food Survey 2000 this is in User Guide Volume 1 (a4512uab.pdf) that can be accessed via its online catalogue record and also via this link:
http://www.data-archive.ac.uk/doc/4512/mrdoc/pdf/a4512uab.pdf

Food and drink measurements
Although food & drink are recorded in the diaries according to the
purchased units,  imperial weights & volumes are converted to 
metric when the data is keyed into the database. Consequently, 
units of weight & volume in the EFS are in grams and millilitres 
respectively with the usual exception of eggs which are recorded 
by number.