ONS definitions of “Woman” in Statistical Classifications
FOI reference: FOI-2025-3308
You asked
I am submitting this request under the Freedom of Information Act 2000.
I am requesting only information already held within ONS statistical classifications, coding standards, or metadata frameworks.
No new analysis or interpretation is requested.
Please limit your response solely to definitions recorded in classification systems, metadata documentation, census standards, or harmonised principles.
I would be grateful for point-by-point confirmation of the following.
1. Statistical Classifications and Harmonised Standards
1a. Does ONS hold any definition or classification wording for "woman", "female", or "adult female" within its statistical standards or harmonised principles?
1b. If yes, please provide the recorded wording.
2. Census or Survey Metadata
2a. Do ONS census or survey metadata documents contain a definition of "woman", "female", or "adult female"?
2b. If yes, please provide the wording exactly as recorded.
3. Sex and Gender Coding Standards
3a. Do ONS coding frameworks include definitions that distinguish between biological sex and gender identity, specifically in relation to the term "woman"?
3b. If yes, please provide the wording exactly as held.
To read response to FOI go to https://www.ons.gov.uk/aboutus/transparencyandgovernance/freedomofinformationfoi/onsdefinitionsofwomaninstatisticalclassifications