new methodology in the field of combining … · cati – computer assisted telephone interview 29...
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NEW METHODOLOGY IN THE FIELD OF COMBINING ADMINISTRATIVE SOURCES AND DIRECT
DATA COLLECTION Janusz Dygaszewicz
Director
Department of Programming and Coordination of Statistical Surveys
Central Statistical Office of Poland
Member of Executive Committee of the UN-GGIM: Europe
President of European Forum for Geography and Statistics EFGS
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Doha, Qatar, 11 December 2017
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Long-term history (tradition) of Polish statistics
• 1789 - first countrywide population
census in Poland (based on registers!! )
– The register of nobility and burghers
– The parish register of births and deaths
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Combining Census a combination of data from administrative sources
(full survey covering basic demographic variables)
with data acquired from
ad-hoc 20% sample survey.
Methodology in 2011 - Mixed Model for Population and Housing Census
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• Including spatial data reference registers Administrative Sources
• CAWI (CAII) – Computer Assisted Web (Internet) Interview Self-enumeration by Internet
• CATI - Computer Assisted Telephone Interview (Call Center) Telephone Interview
• Registered on hand-held terminals with usage GPS and GIS service CAPI - Computer Assisted Personal Interview
Face-to-face Interview with respondents executed by the
census enumerators
Data collection channels in 2011 Census Round
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• CAII/CAWI - Computer Assisted Internet Interview,
• CAPI - Computer Assisted Personal Interview,
• CATI - Computer Assisted Telephone Interviewing.
CAxI
CAxI
CAXI
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Census organisation
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The project timetable
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2007 Start of
preparation
IX-X.2009 Trial Census
PSR 2010
IV-V.2010 Trial census NSP 2011
IX-X.2010 PSR 2010
IV-VI.2011 NSP 2011
2013 End of project
Agriculture Census 2010
National Population and Housing Census 2011
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Organization structure
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16 central controllers
32 managers of the WCZS and the WCC
571 voivodship controllers
642 statistical interviewers
around 2800 enumerator leaders on gmina level
around 18000 census enumerators
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ADMINISTRATIVE REGISTERS
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• The usage of administrative sources in the census: – direct source of research data ,
– source of information to create a list of entities covered by the census frame (address-housing survey) ,
– in addition, a source of information for : • imputation,
• data estimation,
• comparison the quality of the data.
The use of administrative sources in censuses
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Data Owners:
• Ministry of Finance,
• Ministry of Interior and Administration,
• Ministry of Justice,
• Agricultural Social Insurance Fund,
• National Health Fund,
• Agency for Restructuring and Modernisation of Agriculture,
• Agricultural and Food Quality Inspection,
• Agency for Geodesy and Cartography,
• State Fund for Rehabilitation of Disabled Persons,
• County Offices,
• Commune Offices,
• Regional Offices,
• Telcoms,
• Energy Suppliers,
• Office For Foreigners,
• Social Insurance Institution,
• Housing Managers,
Registers - data acquisition
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Key administrative sources used in the Polish official statistics
population registration system
tax system
economic activity information system
farming activity information system
social security system
social insurance system
health insurance system
real estate information system
education information system
vehicle and vehicle owners information system
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The data transformation model
from administrative sources into statistical data sets
Validation and adjustment
Integration
Complex deduplication
The selection of statistical variable valuefrom many registers
Data transition
The processing of identification
and address variables
The processing of substantive
variables
STATISTICAL DATA SET
Preliminary preparation of an administrative register
1) Importing2) Mapping3) Simple deduplication4) Denormalisation
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Data quality -measures-
1. Measuring the quality of administrative registers
– timeliness of data
– methodological compatibility
– completness
– identification standards used in the registry
– usefulness
– compatibility of data in administrative sources to data obtained in the
study/survey
2. Measuring the quality in processing of data registers
excessive coverage error rate
incomplete coverage error rate – subjective indicator of completness
objective indicator of completness
imputation rate
data correction index
integration data from various sources index
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Census startegy
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Full scale survey (short form - 15 questions covered by admin data)
Administrative and
non-administrative
systems
The CAII method
Data sumplementation (CAPI and CATI)
1) Data from administrative register – Master Record
2) Data acquired using the CAII method
3) Data supplemented using
CATI and CAPI method
Full-scale survey:
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1) Data from administrative register – Master Record
2) Data acquired using:
The CAII method
The CAPI method
3) Data supplemented using
CATI method
20% sample survey (long form - about 100 questions)
Sample survey: Administrative and non-administrative
systems
The CAII method The CAPI method
Sample survey
The CATI method – The supplementation
of data
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XML
TXT
Registry 1
Metadata server
Operational Microdata
Base
Registry 2
Registry n Analytical Microdata
Base
ETL Tools
Portal
CAXI
Architecture solution
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XML
Files
Statistical
Files
Golden
Record
Metadata Metadata Metadata
SDMX
Questionnaires
Stage I – Preparatory works
Stage III – Results compilation
Stage II – Data acquisition
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GOLDEN RECORD
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XML
TXT
Registry 1
Metadata server
Operational Microdata
Base
Registry 2
Registry n Analitycal Microdata
Base
ETL Tools
Portal
CAXI
Golden Record generation
XML
Files
Statistical
Files
Golden
Record
Metadata Metadata Metadata
SDMX
Questionaries
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Integration with Census Frame and CAxI data,
Validation,
Correction,
Operational Imputation,
Transfer proper values to Golden Record,
Golden Record generation
Registers 1..n
CAxI
Golden Record
OMB Layers
AMB
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DATA ACQUISITION
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On-line channels for data collection
System Architecture
CAII
CATI
Map Server
CAPI
Operational Microdata Base
Census Completeness Management
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Electronic media
The architecture of a CAII/CAWI method
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OBM
ZKS
Online electronic questionnaire
system
Internet
Online method Offline method
Offline questionnaire
Downloading the
application file
Online
Browser
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• Identification
Used to confirm the identity of the respondent.
• Entering identification data in a questionnaire(f.ex.: PIN, NIP, first name, last name) or additional authentication qualities (f.ex. a place of birth, mother’s maiden name)
• Establishing a password which jointly with PIN was the basis of authentication within 14 days
Self-enumeration by Internet filling the questionnaire by the respondent
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A man
Age: about 24 years old
A city inhabitant
Secondary degree
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Typical person using selfenumeration
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0
50,000
100,000
150,000
200,000
250,000
300,000
350,000
0
500,000
1,000,000
1,500,000
2,000,000
2,500,000
3,000,000
3,500,000
4,000,000
4,500,000
5,000,000
2 k
wi
4 k
wi
6 k
wi
8 k
wi
10 k
wi
12 k
wi
14 k
wi
16 k
wi
18 k
wi
20 k
wi
22 k
wi
24 k
wi
26 k
wi
28 k
wi
30 k
wi
2 m
aj
4 m
aj
6 m
aj
8 m
aj
10 m
aj
12 m
aj
14 m
aj
16 m
aj
18 m
aj
20 m
aj
22 m
aj
24 m
aj
26 m
aj
28 m
aj
30 m
aj
1 c
ze
3 c
ze
5 c
ze
7 c
ze
9 c
ze
11 c
ze
13 c
ze
15 c
ze
17 c
ze
Przyrost Razem CAPI 2 per. Mov. Avg. (Przyrost)
Self enumeration trend
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• scheduled as the second (following CAII) channel of collecting data;
• working posts of telephone interviewers located in separated Call Center studies;
• telephone interviewers provided with professional equipment.
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CATI – Computer Assisted Telephone Interview
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The most significant functionality of Call Center
Hotline
Interviewing Arranging visits by
census enumerators
Confirming the identity of the
interviewer/census enumerator
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• the third channel of data collection in the case of failure to obtain a complete set of data via CAII and CATI channels
• direct interviews in households (first or second channel)
where such a way of proceeding results from adopted methodology or
whose members has not expressed consent for a telephone survey
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CAPI – Computer Assisted Personal Interview
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Dedicated APN Mobile network
The architecture of a CAPI method
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OBM ZKS
Dispatching application - server -
Communication server
WAN CSO
Dispatching
application
- client -
Map server
Mobile
application
Management
of a terminal
Cryptographic SIM card
Module GPS
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HH - Mobile terminal with GPS
• HTC Touch Pro2
• Screen
– touch-screen
– size 3,6’’
– resolution 480 x 800 pixels
– sliding, tilting - convenient usage
• sliding, 5-rows QWERTY keyboard
• GSM/GPRS/EDGE/UMTS/HSPA
• GPS module
• camera - 3,2 MP
• Windows Mobile® 6.5
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Enumerator
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Enumerator
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The GIS application for field operations
- handheld devices
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Enumerator – GIS technology
• Map module - GIS
– Ortophotomap
– Cadastral Data
– Assigned Tasks
– Started Tasks
– Completed Tasks
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Enumerator
• Alarm procedure
– In emergency situations, enumerators have a possibility of sending an alarm signal to their supervisors
– Alarm notice is sent to the supervisor application and via SMS to the supervisor
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Responsibilities:
• Address Point and Census Area management
• Enumerator monitoring
– Census Progress
– Localization and trail
• Emergency situation management
– Providing help for enumerators
• Providing necessary information to enumerators
Regional Supervisor (NUTS2) level Field enumeration management
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Address point
assignment
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Census
Completeness
Monitoring
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Enumerator
tracking
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