Office for National Statistics did not have the information requested.

Zoe O'Connell

Dear Office for National Statistics,

This is a follow-up request to FOI01148/O'connell/QE1.

In each of the 1981, 1991 and 2001 Censuses:

a) As a result of a "mismatch" between relationship status and sex reported on the census form,
i. How many individuals had their relationship status altered
ii. How many individuals had their sex altered

b) How many individuals had their relationship status altered due to:
i. Indicating multiple spouses in the same household
ii. Indicating multiple partners in the same household

c) How many individuals had:
i. Their sex
ii. Their relationship status
...updated for some reason other than above.

If this request would exceed permitted time, please give preference to answering (a) and (b) and for more recent years first.

Yours faithfully,

Zoe O'Connell

Paul Wearn, Office for National Statistics

Our Reference: FOI01193/O'Connell/QE1

Dear Zoe O***Connell

Firstly I should clarify that individual identifiable records are not
changed and so it could be argued that the answer to all your questions is
in fact none. It is the anonymised records on the outputs database that
are edited for inconsistencies.

Information about edited records is not available for 1981 and 1991. ONS
has published imputation rates for each variable from 2001 on our website

To provide the information on edited records from the 2001 Census database
would require reprocessing and applying an algorithm to each record. We
estimate that the cost of complying with your request would significantly
exceed the appropriate limit of **600 even with the prioritisation of your
request as you suggest. The appropriate limit has been specified in
regulations and for central Government it is set at **600. Under section
12 of the Freedom of Information Act the ONS is not obliged to comply with
your request and we will not be processing your request further.
You have the right to have this response to your freedom of information
request reviewed internally by an internal review process and, if you
remain unhappy with the decision, by the Information Commissioner. If you
would like to have the decision reviewed please write to Frank Nolan,
Office for National Statistics, Room 1127, Government Buildings, Cardiff
Road, Newport, Gwent, NP10 8XG.

If you have any queries about this email, please contact me. Please
remember to quote the reference number above in any future communications.

Kind regards,

Paul Wearn LLB (Hons)
Legal Services
Office for National Statistics

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