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Sample characteristics: Tanzania

Census/survey characteristics
Type Census
Title The United Republic of Tanzania, Population Census 1988
Statistical agency National Bureau of Statistics
Population universe All persons in the country at the census date, except for diplomats and their families
De jure or de facto De facto
Census/survey day August 27, 1988
Questionnaire A short questionnaire for all dwellings and a long questionnaire for a sample of the population. There was a separate "collective questionnaire" for group living arrangements.
Type of fieldwork Direct enumeration
Microdata sample characteristics
Sample design Sample drawn by NBS from long form questionnaire. Approximately 15% of rural enumeration areas within each district received the long form questionnaire; urban areas were sampled at a higher density. The NBS calculated expansion factors to account for sampling. IPUMS drew a systematic 1-in-2 sample from the original 20% sample.
Sample fraction 10%
Sample size (person records) 2,310,424
Sample weights Computed by census agency and should be used for most types of analysis.
Units identified in microdata
Dwellings No
Vacant units No
Households Yes
Collective dwellings No
Smallest geography District
Census/survey characteristics
Type Census
Title The United Republic of Tanzania, 2002 Population and Housing Census
Statistical agency National Bureau of Statistics
Population universe All persons in the country at the census date, except for diplomats and their families
De jure or de facto De facto
Census/survey day August 22, 2002
Questionnaire A short questionnaire administered to 75% of enumeration areas and a long questionnaire adminstered to 25% of enumeration areas.
Type of fieldwork Direct enumeration
Microdata sample characteristics
Sample design Sample drawn by NBS from long form questionnaire. Weights provide expansion factors. Approximately 15% of rural enumeration areas within each district received the long form questionnaire; urban areas were sampled at a higher density. IPUMS drew a systematic two-thirds subsample to reduce the original dataset from 15 to 10%.
Sample fraction 10%
Sample size (person records) 3,732,735
Sample weights Computed by census agency and should be used for most types of analysis.
Units identified in microdata
Dwellings No
Vacant units No
Households Yes
Collective dwellings Yes
Smallest geography District
Unit definitions
Dwellings This is a building persons use solely for lodging purposes. Buildings which are not used for lodging such factories or warehouses as are not dwellings.
Households The group of people related or not that usually live together in one or more dwellings, eat together, and together take care of their daily fundamental needs. Usually a household is made up of a man, woman, and their children. Other relatives, guests and servants are counted as part of the household if they spent the night preceding the census in the household. As an exception a household can be made up of a single person.
Collective dwellings The group of people living together in camps, boarding schools, hospitals, prisons, and other collective households such as these.
Census/survey characteristics
Type Census
Title 2012 Population and Housing Census
Statistical agency National Bureau of Statistics
Population universe All persons in the country at the census date, except for diplomats and their families
De jure or de facto De facto
Census/survey day August 26, 2012
Field work period August 26, 2012
Questionnaire A short questionnaire will have 37 questions (given to 70% of the enumeratioed areas) and a long questionnaire will have 62 questions (given to 30% of the enumeration areas).
Type of fieldwork Direct enumeration
Microdata sample characteristics
Sample design Systematic Sampling (random start, then 1 out of every 2.5 private households from the processed 25% households) by MPC.
Sample fraction 10%
Sample size (person records) 4,498,022
Sample weights Differential weights provided by the National Statistical Office.
Units identified in microdata
Dwellings No
Vacant units No
Households Yes
Collective dwellings No
Smallest geography District
Unit definitions
Dwellings A building used solely for lodging purposes.
Households A household include persons who normally live and eat together (they cooperate in order to meet their daily needs).
Collective dwellings The group of people living together in camps, boarding schools, hospitals, prisons, and other collective households such as these.