1. Data validation in Liechtenstein
Franziska Frick / Office of Statistics
November 2017

2. Framework conditions Liechtenstein Country 160 km2 37’810 inhabitants
11 villages
Prince family
Currency: Swiss Franc
Office of Statistics
10 people
36 statistical publications
Databases: mostly registers & administrative data
only a few surveys
Coverage: mostly full coverage
only a few results are based on samples
Office of Statitics:
Everyone is covering more than one subject.
«All in one»-roles: data collection, analysis, text & graphs, presentations, online content, newsletter, mailing, international (Eurostat) questionnaires…

3. Manual procedures – Education statistics
Administrative data
Manual procedures – Education statistics
Comparison of raw data with previous year
Check for duplicate cases, number of classes, pupils, schools, completeness
Comparison of results with other sources
Calculations done by the Office of Education in documents for intern use
Comparison of results with previous year
All tables are compared to the previous year
Control calculations in Excel
Additional formulas which control subtotals and totals

4. Manual procedures – Education statistics
Administrative data
Manual procedures – Education statistics
Separate file containing control tables
Control of subtotals and totals between tables/ chapters
«Four-eyes principle»
Final check by collegues
National publication
Eurostat data
Comparison with national publication
Eurostat data checks within questionnaires

5. Population & Datawarehouse business register
Registers
Population & Datawarehouse business register
Per certain reference dates (e.g or ) data for national/international use is exported into a separate data warehouse and is invariable.
Data in this warehouse, that has been validated and used for national publications is marked as «published».
Main data users: Civil registry office, Office of Statistics, Migration and Passport Office
=> Less than 40’000 inhabitants, 37’000 employees of which 20’000 commute from abroad (more than 50%)
1) Population of Liechtenstein
2) Businesses and employees in Liechtenstein
(Subgroup)
1) Various loads
2) Published loads

6. Registers / Manual data validation
Population register
Control of residence balance
check back with resident registration offices in all villages
Check of different variables
housing ID, age of pensioners/ students/ working population, nationalities, marital status, number of divorces, immigrants: country of birth and address
Population register:
Einwohnerabgleich: Liste of inhabitants in each village per reference date
Variablen prüfen: completeness of housing ID, nationalities = completness and allocation to continents, marital status = completeness, number of certificates of divorces & number of divorces registered
=> Tables are generated automatically, checks are done manually.

7. Registers / Automatic data validation
Business register
Total of 46 error loads - 21 are corrected by the Office of Statistics
Check of different variables
self-employed/ employed, economic sector, legal structure, date of funding, nationality, age
Comparison to previous years
Number of employees, FTE, workplaces, workplaces per economic sector,
inbound/ outbound commuters, businesses per size category
Error loads check for inconsistencies in data: kids who are older than parents, old students etc. Only a few corrections are necessary, most loads are empty or include few cases
Different data useres are responsible for different quality checks. The Office of information technology (IT) creates 46 error loads and sends error-lists to the Civil Registry Office, Office of Statistics, Migration and Passport Office. Alle errors are then corrected and a definitiv data load is created and saved as «published» in the datawarehouse.
Office of Statistics is responsible for 21 error loads.
completness: self-employed/ employed, coding of economic sector, plausible dates,
=> Eurostat data is only sent after the national publication. Therefore no additional validation procedures are done, except then ones Eurostat offers.

8. New register is planned in 2018
Planned developments
New register is planned in 2018
More automatic validation/ error loads
Selection list for addresses, villages and countries
Fewer people who enter data
Only permanent employees can enter data
Defined rules for special/ uncommon characters
Flag items that base on an ID
Regular user group meetings