collecting grid based data census 2000 and 2011 diana makarenko-piirsalu statistics estonia
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Collecting grid based dataCensus 2000 and 2011
Diana Makarenko-Piirsalu
Statistics Estonia
02.10.2009 [email protected]
How were the grid based data captured in Census 2000?
Who are the main users of Census 2000 grid based data?
How will the grid based data be captured in Census 2011?
Why not to use the Population Register?
Long-term plans for grid based population data
Themes
02.10.2009 [email protected]
Census 2000 - capture of grid dataBackground: no geocoded address list available Traditional method:
paper enumerator maps and paper census forms
houses were numbered in each enumerator area census form had the same number as houses on the map
Enumerator’s tasks: to draw the houses found in the course of field work on the map
assign the number to the house drawn and use the same number
on census form
Production of the grid based data:
time consuming, much “hand work” = 3 years
02.10.2009 [email protected]
All census 2000 results are geocodedand can be ordered from www.stat.ee
Users:
50% of local governments
50% of county governments
ministries
private companies
education and research institutions
02.10.2009 [email protected]
Census 2000 grid based data have been used for:
planning (regional and local)
policy making
infrastructure assessment
environmental impact assessment
teaching
scientific research
suitable location assessment
marketing
02.10.2009 [email protected]
Census 2011 – capture of grid data Census 2011 will be conducted using the combined method:
e-Census – providing the opportunity to fill in the census forms on the web
Pre-fill the census forms partly with register data
traditional field work – electronic data capture
Hand-held computers with digital map application
(planning to provide GPS – receivers)
Background: no geocoded address list / address standard exists
producing geoceded address list with the co-operation of NMA
based on cadastral addresses
Enumerator’s task:
To collect locations of “missing” houses using map application (GPS)
Aim: to reduce the time for the grid based data production
02.10.2009 [email protected]
Problems using population register:
Data quality:
addresses in some locations only at village level (ca 20%)
does not represent the actual place of residence due to Estonian legislation:
In which part of the country is the car insurance cheaper?Which local government will pay supplementary retirement allowance?Where should one’s child live to get access to the school of good reputation?
Technically it is possible to produce bottom-up grid data from the population register but ….
Much work has to be done at state level:to change the existing legislation
to implement the new legislation
to implement address standard / data correction accordin to the standard is foreseen in 2012)
to guarantee that complete addresses are entered into the registers etc….
02.10.2009 [email protected]
Problems we are facing:
Population Register
de jure population
Censuses 2000/2011
de facto population
Population grid data based on census have better quality
02.10.2009 [email protected]
Development plan for grid based data
Background:Development of GIS and geostatistic are one of the strategical developements in period 2008 - 2011
Mapping the user needs:in – house, done in 2008
comprehensive outside user needs assessment planned in 2009
02.10.2009 [email protected]
Customers need yearly updated grid based population data (bottom up)
Planned activities: 2009 – grid based data based on the population register for pre-census areas:
comparision with the pre-census results
2010 – grid based population data based on register data:use for census 2011 activities – enumerator area delineation in newly build up areasfor data quality assessment
2011 – collecting grid based data (e-census and field work)2012 – Census based total population grid data (urban areas 250 sq m;500 sq m; 1000 sq m)2013 – Other results (language, religions, etc.) of the Census
Aim: first time to provide night-time; day-time population 2014 – Aim: grid based data based on the population register
02.10.2009 [email protected]
