@Hepwo ONS called it the “gender identity” question and the responses to the question “Is the gender you identify with the same as your sex registered at birth?”, were:
- Yes
- No, write in gender identity.
The ONS guidance stated:
“What is your sex?
Why we ask this question
Your answer is key to understanding trends in the population. It also helps your local community by allowing charities, organisations, and local and central government to understand what services people might need.
This information will be used for equality monitoring between groups of people of different sexes in your local area. Your answer also helps public bodies to identify discrimination or social exclusion based on sex, and work to stop it from happening.
The sex question has been asked since 1801.
This question is vital for understanding population growth and equality monitoring. Please select either “Female” or “Male”.
If you are considering how to answer, use the sex recorded on one of your legal documents such as a birth certificate, Gender Recognition Certificate, or passport.
If you are aged 16 years or over, there is a later voluntary question on gender identity. This asks if the gender you identify with is different from your sex registered at birth. If it is different, you can then record your gender identity.”
I am aware the wording in the guidance may have changed slightly in relation to the sex question following the legal judgement.
This sets out the thought ONS put into the methodology. www.ons.gov.uk/census/censustransformationprogramme/questiondevelopment/genderidentity/census2021finalguidanceforthequestionwhatisyoursex#final-what-is-your-sex-question-guidance-for-census-2021
If you have time you can drill down into the data and one of the classifications was “not applicable” I.e. I don’t have a gender identity.
You may not like it but the intention of the question was to find out whose gender identity matched their birth sex and whose didn’t.