Eustat

Quality Datasheet: Migratory Movements Statistics

Identification of the operation

Name of the operation:

Migratory Movements Statistics

Code:

010311

Type of operation:

Census

Frequency:

Annual

Methodology File:

Migratory Movements

Quality Indicators

Indicators of relevance	Reference period of indicator	Real Value	Reference Value
Satisfaction rating (by statistics operation group) Level of importance (by statistics operation group) Nº of accesses to website Nº of media impressions	2007 2007 2007 2007	3,7 4,1 26.609 13	0 - 5 0 - 5 1.124.249 1.731

Indicators of reliability and accuracy	Reference period of indicator	Real Value	Reference Value
Imputation rates: - Imputation rate of place of birth - Imputation rate of place of origin - Imputation rate of place of destination - Imputation rate of foreign nationality - Imputation rate of level of qualification	2006 2006 2006 2006 2006	0,3% 0,2% 0,1% 0,0% 7,9%

Indicators of punctuality and timeliness	Reference period of indicator	Real Value	Reference Value
Adherence to calendar Average annual time-lag (days or months)	2007	0 10 months	1 9 months

Indicators of geographical comparability (INE)	Reference period of indicator	Real Value	Reference Value
Nº of comparable aspects of metadata Total nº of aspects compared Comparability rate	2006	9 14 64,3%	100%

Indicators of comparability over time	Reference period of indicator	Real Value	Reference Value
Length of the comparable time series	1991-2006	15	10 years or more

Indicators of clarity and accessibility	Reference period of indicator	Real Value	Reference Value
Nº of methodology documents published on the website ("Methodology Section") Nº of publications disseminated (different formats)(1) Minimum nº of "clicks" necessary to access the data tables of the operation	2008 2008 2008	1 5 4

Other indicators	Reference period of indicator	Real Value	Reference Value
Monetary cost (euros)	2007	44.382	11.538.022

(1) The indicator includes the following formation:

• Situation graphs
• Website statistics tables
• Database table
• Quarterly newsletter
• Statistics yearbook
• Press release

Objectives

The quality file sets out to bring together a list of quantitative indicators that reflect the quality of a specific statistics operation for each of the quality dimensions or factors established by EUROSTAT. This quality file has been produced using the standard quality indicators proposed by this European body and others arising from EUSTAT's own statistics operations procedure.

Whenever possible, alongside the real value of each indicator a reference value will be added whose mission is to facilitate the interpretation of the “goodness” of the given indicator. In general it will be expressed by a maximum or minimum value of the reference of the indicator.

Description of indicators

• Indicators of relevance
  • Satisfaction rating and level of importance by operation group
    The Real Value of this indicator is calculated according to the results of the latest available User Satisfaction Survey produced by EUSTAT. As Reference Value it includes the value range, minimum and maximum taken by these indicators (between 0 and 5).
    User satistaction survey
  • Number of accesses to website
    The Real Value of this indicator is calculated according to the annual data of the "Report on Website Demand" produced by EUSTAT. It includes all the accesses to data, information, documentation etc. related to a specific statistics operation. As reference value it includes the total number of accesses to statistics operations on the website in the corresponding annual period.
  • Number of media impressions
    The real value reflects the number of times that the specific statistics operation has been mentioned by any part of the media (press, digital media, radio or television). As reference value it includes the value of this indicator for the total number of statistics operations.

• Indicators of reliability and accuracy
  • Imputation rate
    Calculated assigning the number of imputated values in the variable/s considered, out of the total number of records.
  • Imputation rate of place of birth
    Nº of records with imputated values in province or country of birth/ Total nº of records from annual file of movements.
  • Imputation rate of place of origin
    Nº of records with imputated values in province or country of origin/ Total nº of records from annual file of movements.
  • Imputation rate of place of destination
    Nº of records with imputated values in province or country of destination/ Total nº of records from annual file of movements.
  • Imputation rate of nationality
    Nº of records with imputated values of nationality/ Total nº of records from annual file of movements.
  • Imputation rate of level of qualification
    Nº of records with imputated values in qualification/ Total nº of records from annual file of movements.

• Indicators of punctuality and timeliness
  • Adherence to calendar
    The real value of this indicator is given by the number of periods in which the established conjunctural calendar has been adhered to. If the operation is structural, value 1 is introduced if the projected publication date has been met and 0 if otherwise. As reference value it includes the total number of annual reference periods.
  • Average annual time-lag
    The time passed between the reference period of the data and its availability. The real value introduced is the average value of the time-lags recorded during all the periods of the year. If the operation is structural the annual time-lag is considered. As reference value it includes the time-lag established for the statistics operation in the Annual Statistics Programme.

• Indicators of geographical comparability
  • Comparability rate INE
    The real value of this indicator is the percentage of aspects of the metadata that are comparable with the INE. For this the number of comparable aspects is divided by the total number of aspects considered. As reference value 14 relevant aspects of the metadata are considered for the calculation, of which 9 are considered comparable.

• Indicators of comparability over time
  • Length of the comparable time series
    The real value reflects the number of recorded periods of data series that are free of "gaps" provoked either by the specific peculiarities of a certain period or by substantial methodology changes. The greater this indicator the more comparable over time the series is considered. As reference value the value "10 years or more" is proposed, a category proposed by EUROSTAT for this type of indicator.

• Indicators of clarity and accessibility
  • Number of methodology documents published on the website.
    The real value of this indicator reflects the total number of documents (reports, files, tables, etc.) available in the section on "Methodology and Quality" on the website for each statistics operation.
  • Number of publications disseminated.
    The real value of this indicator contains the number of different formats in which the information on the statistics operation is published. These formats are described in the Technical Project of the statistical operation.
  • Minimum nº of clicks to access to access the data tables of the operation
    The real value of this indicator refers to the minimum number of clicks necessary to access the tables on the website.

• Other indicators
  • Monetary cost
    The real value reflects the liquidation cost of the operation and as reference value the total liquidation expenditure of EUSTAT is used.