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Switzerland’s Structural Survey Microdata
Challenges in preparing a set of
microdata for IPUMS-International
«Entrusting population microdata into IEPM/IPUMS»
Data Forum on Harmonization and Uses of European Microdata
Barcelona, Spain, 18-19 January 2018
Dr. David Tesar, Federal Statistical Office, Neuchâtel, Switzerland
Dr. David Tesar, Federal Statistics Office/ Structural Survey | Challenges in the international context | CED | 18.Jan..2018 1
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Contents
Availability of population census data
Characteristics of the Structural Survey
Preparation of the IPUMS microdata - challenges
Questions
Dr. David Tesar, Federal Statistics Office/ Structural Survey | Challenges in the international context | CED | 18.Jan..2018 2
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Entrusting Swiss Population Microdata to IPUMS-I
Dr. David Tesar, Federal Statistics Office/ Structural Survey | Challenges in the international context | CED | 18.Jan..2018 3
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Structural Survey – characteristics
Dr. David Tesar, Federal Statistics Office/ Structural Survey | Challenges in the international context | CED | 18.Jan..2018 4
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Structural Survey - topics
Dr. David Tesar, Federal Statistics Office/ Structural Survey | Challenges in the international context | CED | 18.Jan..2018 5
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Structural Survey – characteristics
The Structural Survey was introduced in 2010
universe – permanent resident population (15+ years) in private hh
→ ≈4% of the universe is being sampled each year
target person receives a personal and a household questionnaire
→ in each sampled household there is exactly one target person
strata (29) – cantons, selected large municipalities and regions
reference day is the 31st of December
Dr. David Tesar, Federal Statistics Office/ Structural Survey | Challenges in the international context | CED | 18.Jan..2018 6
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Entrusting Swiss Population Microdata to IPUMS-I
task: create one set of microdata (Structural Survey 2011) with a person weight and a
household weight
under consideration of:
• no loss of information
• limit the possibility of identifying single persons or households
• continuation of time series
Name Referent/in, Organisationseinheit / Projekt | Titel der Präsentation | Anlass | Datum 7
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Microdata structure
a) PERS: dataset containing information on the target person
b) PERS_HH: dataset containing information on the household and the target person
c) HHMEMBERS: dataset containing information on all household members
d) HHMEMBERS_REL: dataset containing information on how household members are
related to each other
→ In IPUMS-International one dataset with a person weight and a household
weight is required.
Dr. David Tesar, Federal Statistics Office/ Structural Survey | Challenges in the international context | CED | 18.Jan..2018 8
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Microdata structure – information extraction
Example: occupation model of couples with children
Household composition and transposition from HHMEMBER dataset to the PERS_HH
dataset.
Information loss is the consequence if in the data preparation this analysis of the household
composition and the transposition in not done
Name Referent/in, Organisationseinheit / Projekt | Titel der Präsentation | Anlass | Datum 9
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Challenges
Translations
Choosing hierarchy level
Data structure
No interruption of time series
Dr. David Tesar, Federal Statistics Office/ Structural Survey | Challenges in the international context | CED | 18.Jan..2018 10
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Outlook
(Jan 2018)
feedback from supervisor on prepared metadata and microdata
(Feb 2018)
Sending the prepared files to IPUMS-International and working with IPUMS on the final
version
Name Referent/in, Organisationseinheit / Projekt | Titel der Präsentation | Anlass | Datum 11
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Thank you!
Questions?
Dr. David Tesar, Federal Statistics Office/ Structural Survey | Challenges in the international context | CED | 18.Jan..2018 12
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Challenges
Translations
→ nomenclatures can have several thousand attributes / small translation service & different priorities
Dr. David Tesar, Federal Statistics Office/ Structural Survey | Challenges in the international context | CED | 18.Jan..2018 13
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Challenges
Translations
Data structure
Choosing hierarchy level
No interruption of time series
Dr. David Tesar, Federal Statistics Office/ Structural Survey | Challenges in the international context | CED | 18.Jan..2018 14
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Challenges
Data structure
→ 4 sets of microdata / transformation into 1 set of microdata
Dr. David Tesar, Federal Statistics Office/ Structural Survey | Challenges in the international context | CED | 18.Jan..2018 15
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Challenges
Translations
Data structure
Choosing hierarchy level
No interruption of time series
Dr. David Tesar, Federal Statistics Office/ Structural Survey | Challenges in the international context | CED | 18.Jan..2018 16
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Challenges
Choosing hierarchy level
→ when nomenclatures are too detailed a certain agregation is needed in sample data
Dr. David Tesar, Federal Statistics Office/ Structural Survey | Challenges in the international context | CED | 18.Jan..2018 17
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Challenges
Translations
Data structure
Choosing hierarchy level
No interruption of time series
Dr. David Tesar, Federal Statistics Office/ Structural Survey | Challenges in the international context | CED | 18.Jan..2018 18
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Challenges
No interruption of time series
→ census microdata of full population surveys are already available in IPUMS-I / fundamental changes in
variable definitions as in universes can cut time series
Dr. David Tesar, Federal Statistics Office/ Structural Survey | Challenges in the international context | CED | 18.Jan..2018 19
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Outlook
• Structural Survey is one of the fundamental surveys at the FSO. The time series are growing year by year. Results are widelyspread in media, administrations and among the population.
• The increase of online use of the questionnaire is increasing dataquality → the aim is to persuade surveyed persons topreferentially fill out the online questionnaire.
Dr. David Tesar, Federal Statistics Office/ Structural Survey | Challenges in the international context | CED | 18.Jan..2018 20
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Additional slides / 1
Dr. David Tesar, Federal Statistics Office/ Structural Survey | Challenges in the international context | CED | 18.Jan..2018 21
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Additional slides / 2
Dr. David Tesar, Federal Statistics Office/ Structural Survey | Challenges in the international context | CED | 18.Jan..2018 22
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Reserve
Name Referent/in, Organisationseinheit / Projekt | Titel der Präsentation | Anlass | Datum 23