Census Questionnaire Design

Consultations with data users and the public between 2016 and 2022 showed the value of continuing the topics from the 2006 Census with a number of adjustments and additions to the questions. The development of the 2022 PHC questionnaire has allowed for data collected to be useful for planning with a careful consideration of the burden and time taken to fill the questionnaire by both the enumerator and the respondent.
It is important for Census data to be comparable and compatible with previous Censuses and also with other data produced by other statistical agencies in Nigeria and the wider community.
The Census uses the current 2006 classifications where applicable but reviewed them to reflect changes in the Nigerian society. Where there were no 2006 classifications, Census-specific classifications have been developed and are reviewed prior to each test: The changes that have occurred since 2011 are described below:
Introductions
2006
2022
Population Classification
Population was classified into 8 categories which are:
1. Regular household
2. Institutional household
3. Homeless household
4. Homeless persons
5. Nomadic household
6. Transient persons or households
7. Fishing and hunting population
8. Census Functionaries
Population Classifications are:
1. Household
2. Institution (Long stay)
3. Institution (short stay)
4. Floating/Transient population
5. Diplomatic Corps
Types of Residence
Not Applicable
We have identified different types of residence that fits into the varying population classification
Relationship to Head of Household
There were 12 relationships to head of household:
1. Head of Household
2. Spouse
3. Son
4. Daughter
5. Brother
6. Sister
7. Father
8. Mother
9. Other Blood Relation
10. Non-Blood Relation
11. Institutional Household
12. Guest
There are 20 relationships to the Head of household. See Census Questionnaire
Migration
Inter State Migration
1. Interstate Migration
2. Intrastate Migration
 a. Inter LGA migration
 b. Intra LGA
Locality Migration (within current LGA of residence) for rural and urban migration
Other introductions or modifications to the questionnaire are:
Questions on Birth Registration were introduced to identify people that have registered their births in the country and with which agency.
Under Literacy, the options have been reframed to identify persons that can read or write with understanding, so also those that can only read but cannot write with understanding.
Under Nationality, a variable has been introduced, that is, Dual Nationality to identify people who are Nigerians and have another Nationality.
The title ‘Persons living with disability’ was replaced with Persons with difficulties in performing certain tasks, in line with the Washington D.C recommendations. Also, two variables, (Albinos and Speech) have been introduced into the questions.
On Economic Characteristics, the 2022 PHC questionnaire will reference 7 days from census night for economic characteristics as opposed to the reference period of 12 months from census night. New variables have also been added to this section namely, engagement in work, reason for inactivity and employment status.
The Information Communication Technology section has been introduced into the individual persons section with the aim of soliciting answers to three variables – owned ICT devices, devices used to access internet, and usual place of internet access.
Also, the Fertility and Mortality section was introduced into the persons section of the questionnaire because of the need for robust data to close gaps in development planning.
In the Housing and Amenities section, more questions on sanitation has been introduced with variables covering Solid Waste Storage, Solid Waste Disposal, Number of Toilet Rooms, Waste Water Disposal, and Sharing of Toilet Facility which is in line with the Sustainable Development Goals 6 (Clean Water and Sanitation)which states that, by year 2030, Nigeria can achieve access to adequate and equitable sanitation and hygiene for all and end open defecation, paying special attention to the needs of women and girls and those in vulnerable situations.