Variables System the bridge between metadata and dissemination
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« Variables System the bridge between metadata and
dissemination
Monica Isfan ([email protected])Statistics Portugal
9 –11July 2008
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Variables System
Statistical Indicators
Register flow
Transmission and visualization
Benefits
Overview
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Variables System
Variables System
ISO/ IEC 11179
Statistical Survey Design
Automatic Questionnaire Generations
Statistical Dissemination
Facilitate Standardization
Identify Duplicates
Facilitate Data Sharing
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Variables System
Variables System
Production System
Dissemination System
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Dissemination System
DDD
Dissemination Data Base
Central data base of statistical indicators
Inputs → aggregate data from Production Departments
Outputs → aggregate data and the associated metadata
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Variables System
Property
Object class (population or statistical unit)
Representation class
Value domain
Variables
Statistical indicators
Variables System
defined
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Statistical Indicators - Definition
Data element that represents statistical data for a specified time, place, and other characteristics.
(“Terminology on Statistical Metadata, Conference of European Statisticians – Statistical Standards and Studies – Nº 53”).
Statistical Indicator
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Statistical Indicators - DefinitionIn Variables
System Statistical indicator
defined
Variables
Aggregate Variables
Dimensions
+
D1 = Time
D2 = Geography
…….
Dn = Other characteristics
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Aggregate Variables
Property;
Object class = Population;
Representation class = Quantity, Ratio, Value, etc.
Value domain = Non-enumerated + Unit of measure;
Definition and/ or concept;
Formula.
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Property = Resident Population
Population = Resident Population
Representation class = Quantity
Value domain = (0, ∞)/ U.M. = No.
Concept = Resident population (208/ 24-05-1994)
The persons who regardless of the fact that at the moment of observation ' 0:00 a.m. of the reference day ' are present or absent in a given housing unit, this unit being where they live during most of the year with their family, or where they have all or most of their belongings.
Formula = No
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Statistical Indicators - DefinitionIn Variables
System Statistical indicator
defined
Variables
Aggregate Variables
Dimensions
+
D1 = Time
D2 = Geography
…….
Dn = Other characteristics
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Dimensions
Property;
Object class = Statistical Unit;
Representation class = Code;
Value domain = Classification + Level of classification;
Definition and/ or concept.
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Property = Sex
Statistical unit = Person
Representation class = Code
Value domain = V00305 – Sex (Dissemination MF) + Level 2 Level Code Name
1 T MF
2 1 M
2 2 F
Definition
Biological difference between male and female.
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Statistical Indicators - Name
Aggregate variable
D2 = Dimension (geography)
Dn = Other dimensions
,
by
and
…,
Dn-1 = Other dimensions
Name definition
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Sex
Statistical Indicators - Name
Aggregate variable
Dimension (geography)
Other dimensions
Resident population
Place of residence
,
by
andAge
group
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Statistical Indicators – Register flow
Step 1. Analyse of data and metadata
Step 2. Variables and statistical indicators proposal
Step 3. Register and approval of variables
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Analyse/ Search
Proposal
Update
Approve
Associated Systems
Concepts
Sources
Assistant Entities
Property
Object class
Representation class
Value domain
Greatness/ Unit
Administrative sources
Other sources
Files / Version
Conceptual variable
Variable
User management
End
Select type of sourceSurvey
Select variables
All...Variables for association
Select Methodological Document
Annual estimates of resident population (version 1)
Word
Association between variables and the methodological document
AggregateDerivateObservation Dimension
Step 4. Source selection
Resident population
3174|2007-04-27 >> Distribution of the resident population (%)
259| 2005-09-05 >>Resident population (No.)
Step 5. Association of aggregate variables
Statistical Indicators – Register flow
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Assistant Entities
Property
Object class
Representation class
Value domain
Greatness/ Unit
Administrative sources
Other sources
Files / Version
Conceptual variable
Variable
User management
End
Select variables
age
Association between variables and the methodological document
Observation Derivate Aggregate Dimension
Statistical Indicators – Register flow
Select aggregate variable Cross ref.
259|2005-09-05>>Resident population (No.)
190|2005-08-03>> Reference period
235|2005-01-01>> Place of residence
310|2005-01-01>> Sex
Generate name
Step 6. Define the cross reference
190|2005-08-03>> Reference period
235|2005-01-01>> Place of residence
310|2005-01-01>> Sex
Word
Variables for association
Step 7. Associate the dimensions to the selected aggregate variable
All...
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Statistical Indicators – Register flow
259|2005-09-05>>Resident population (No.)
Cross reference
190|2005-08-03>> Reference period
235|2005-01-01>> Place of residence
310|2005-01-01>> Sex
236|2005-08-29>> Age group (by life cycles)
Generate statistical indicator
Select aggregate variable
Cross reference code:
Definition:
Name:
Registry
População residente (N.º)_Período de referência_Local de residência_Sexo_Grupo etário (por ciclos de vida)
População residente (N.º) por Local de residência, Sexo e Grupo etário (por ciclos de vida)
Resident population (No.) by Place of residence, Sex and Age group ( by life cycle)
Step 8. Generate the definition and the name of statistical indicator and execute the registry
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Variables System
Statistical Indicators
(view)
Metadata
DataWarehouse
Data Base
Statistical Indicators DB
Metadata
Data
Data
Internet
Statistical Indicators – Transmission
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Statistical Indicators – Visualization
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Statistical Indicators – VisualizationName Resident population (No.) by Place of residence, Sex and Age group (by life cycles)
Regularity Annual
Source Statistics Portugal, Annual estimates of resident population
First available period 2000
Last available period 2007
Dimensions
Dimension 1 Data reference period
Dimension 2 Place of residence
Dimension 3 Sex
Dimension 4 Age group (by life cycles)
Concepts
RESIDENT POPULATION The persons who regardless of the fact that at the moment of observation ' 0:00 a.m. of the reference day ' are present or absent in a given housing unit, this unit being where they live during most of the year with their family, or where they have all or most of their belongings.
REFERENCE PERIOD The length of time for which data are collected, e.g. a specific day, month or year.
AGE GROUP The age interval in years to which a person belongs at the time of reference .
Definition
Formula Estimated value (Dem.)
Measure unit (symbol) Number (No.)
Power of 10 0
Last update date 29-May-2008
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Resident population (No.) by place of residence (NUTS – III)2007
Statistical Indicators – Visualization
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Benefits
“Metadata is the key to ensure that information will survive and continue to be accessible into the future.”
“Only used statistical information is useful statistical information.”
Central reference for aggregate data and metadata;
Improving communication and understandability;
Increasing data and metadata sharing.
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Thank you for your attention!
Variables System the bridge between metadata and
dissemination