'Sex' is the distinction between males and females based on the biological differences in sexual characteristics.
Relationship to questionnaire
Data on sex comes from question 3 on the individual form (PDF 395kb).
The subject population is the people, families, households or dwellings to whom the variable applies.
The subject population for this variable is the census night population, as this question applies to all people in New Zealand on census night. However, data on sex can also be (and often is) output for the census usually resident population.
There is no non-response category for sex, as a response is imputed if the question was not answered. This includes situations in which an entire individual form for a person within a household was not answered, and situations in which an entire household did not respond.
In 2006, sex was imputed for 4.0 percent of the usually resident population.
In 2001, sex was imputed for 4.1 percent of the usually resident population.
Quality Management Strategy priority level
Sex is a foremost variable.
The Census Quality Management Strategy assigns a priority level to all census variables.
Foremost variables are core census variables that have the highest priority in terms of quality, time and resources across all phases of the 2006 Census.
All data must meet minimum quality standards in order to make it suitable for use.
Comparability with 1996 and 2001 Census data
There are no issues affecting the comparability of this data with 1996 and 2001 Census data.
There are no significant issues that users should be aware of.
Other things to be aware of
- All census data was subject to considerable checks (including edits) during processing and evaluation, to ensure that it meets quality standards and is suitable for use. These checks were applied to data supplied both on paper and on Internet forms. In addition to these quality checks, the Internet form had built-in editing functionality that directed respondents to the appropriate questions and ensured that their responses were valid. As a result of this, data from Internet forms may be of higher overall quality than data from paper forms. The significance of this will depend on the particular type of analysis being done.
There were differences between how the forms were completed on the Internet and on paper for this variable:
- The Internet form allowed only one response to be selected for the sex question. If a further response was selected, the response given previously disappeared. Multiple responses to this question were possible when forms were completed on paper.
- On the Internet, the sex question had to be answered in order for the respondent to submit the form. Non-response to this question was possible when forms were completed on paper.