For all persons.
[Question 2 through 12 were asked of all persons.]

P3. Sex - Is [the respondent] a male or female?

Determine the sex of each household member by asking the question, "Is [the respondent] male or female?" The sex of each household member can be determined by his/her name or relationship to the head, but in some cases, there is a need to ask the respondent whether the person is a male or female. Some names such as Charlie, Florence, Alex, Chito, Cielito, Christy, Loreto, Trinidad, Resurreccion, Rosario, Joey, Regine, and others, have been commonly used to refer to either a male or female person.
Sex-disaggregated data is of prime importance in demographic and socio-economic studies. Separate data for males and females may be crucial in the analysis of many types of data. Demographers and statisticians likewise consider sex a key variable in evaluating the completeness and accuracy of census counts.
Mark the appropriate box with "X" opposite "1" for Male or "2" for Female.