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Italy

Reference metadata describe statistical concepts and methodologies used for the collection and generation of data. They provide information on data quality and, since they are strongly content-oriented, assist users in interpreting the data. Reference metadata, unlike structural metadata, can be decoupled from the data.

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Population (national level) (demo_pop)

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National Reference Metadata in Euro SDMX Metadata Structure (ESMS)

Compiling agency: Italian National Institute of Statistics – ISTAT

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Data and metadata are transmitted to Eurostat by the Member States in the framework of the Unified Demographic Data Collection which is in accordance with Regulation (EC) No 862/2007 and Regulation (EU) No 1260/2013 and their implementing regulations.

This Euro SDMX Metadata Structure is used for the purpose of quality reporting. The definition of the quality concepts and guidelines are described in the European Statistical System Handbook for Quality Reports.

13 February 2025
3.4.1 Statistical concepts and definitions used in the statistics transmitted to Eurostat
  1.Usually Resident Population  2. Legal Residence Population  3. Registered Residence Population 4. Other 
Population  X      
Live births  X      
Deaths  X      
Immigrants  X      
Emigrants  X      
Acquisitions of citizenship  X      
Loss of citizenship  Not available.   
Legally induced abortions  X      
Late foetal deaths  Not available.   
Infant deaths  X      
Marriages  X      
Divorces  X      

 

3.4.2 Statistical concepts and definitions used in the statistics disseminated in the National Statistical Institute's website
Population

As far as population is concerned it is obtained from the Census results of the Permanent Population Census. It is based on the combination of sample surveys and data from administrative sources; it is carried out every year and it is included in the Integrated System of Statistical Registers managed by the ISTAT. The fulcrum of the whole system is the Basic Register of Individuals (RBI) which constitutes the basic infrastructure for the production of demographic statistics and the universe for the extraction of the surveys’ samples envisaged for the Permanent Census (see Census Law and Plan General Census) and all samples surveys on families. The RBI is “consolidated” annually with reference to 31 December. This consolidation is achieved through a demographic accounting model (MIDEA - Micro-DEmographic Accounting) based on the count of microdata (data on births, deaths and internal and international migration).

The alignment with the Census data takes place following an adjustment of the over- and under-coverage of the RBI by means of the life-signal methodology developed by the Permanent Census using an integrated repository of administrative sources (AIDA). The ‘adjusted’ RBI ensures the alignment of the Census data with the population statistics data and provides timely estimates of key population outputs.

Live births Live birth means the complete expulsion or extraction from its mother of a result of conception, irrespective of the duration of pregnancy, which after such separation, breathes or shows any other evidence of life, such as beating of the heart, pulsation of the umbilical cord or definite movement of voluntary muscles, whether or not the umbilical cord has been cut or the placenta is attached: each result of such a birth is considered live-born, regardless of gestational age.
Deaths Death means the permanent disappearance of all evidence of life at any time after live birth has taken place (postnatal cessation of vital functions without capability of resuscitation).
Immigrants Persons establishing their usual residence in Italy for a period that is expected to be of at least 12 months, having previously been usually resident in another Member State or a third country.
Emigrants Persons establishing their usual residence abroad for a period that is expected to be of at least 12 months, having previously been usually resident in Italy. 
Acquisitions of citizenship

Persons having their usual residence in Italy and having acquired during the reference year the Italian citizenship and having formerly held the citizenship of another Member State or a third country or having formerly been stateless.

Loss of citizenship Statistics are not available.
Legally induced abortions Any interruption of pregnancy with a dead foetus, initiated by deliberate action, in conformity with the national laws, undertaken with the intention of terminating pregnancy.
Late foetal deaths Statistics are not available.
Infant deaths

Deaths of live-born infants who have not yet completed 1 year of life.

Marriages The acts, ceremonies or processes by which the legal relationship of the partners is constituted. The legality of the union may be established by civil or religious mean.
Divorces A divorce is the final legal dissolution (ending) of a marriage. A divorce is the type of separation between spouses that confers on both parties the right to remarry.

 

3.4.3 Differences in statistical concepts and definitions between the statistics transmitted to Eurostat and those disseminated in the National Statistics Institute's website
Population No differences.
Live births No differences.
Deaths No differences.
Immigrants No differences.
Emigrants No differences.
Acquisitions of citizenship No differences.
Loss of citizenship No differences.
Legally induced abortions No differences.
Late foetal deaths No differences.
Infant deaths No differences.
Marriages No differences.
Divorces No differences.

Individuals and events.

  Statistical population
Population Not applicable.
Live births Not applicable.
Deaths Not applicable.
Immigrants Not applicable.
Emigrants Not applicable.
Acquisitions of citizenship Not applicable.
Loss of citizenship Not applicable.
Legally induced abortions Not applicable.
Late foetal deaths Not applicable.
Infant deaths Not applicable.
Marriages Not applicable.
Divorces Not applicable.

Data on population and flows (natural and migration flows) are available at Municipality level.

The reference date for population statistics is the end of the reference period (midnight of 31 December).
The reference period for vital statistics and migration flows is the calendar year in which the event occurred.

  Overall accuracy and special cases (Inclusion/exclusion of asylum seekers and refugees, persons living on unauthorised or irregular basis, international students, persons who do not register/deregister, ...)
Population

As far as population is concerned it is obtained from the Census results of the Permanent Population Census.

It is based on the combination of sample surveys and data from administrative sources; it is carried out every year and it is included in the Integrated System of Statistical Registers managed by the ISTAT.

The fulcrum of the whole system is the Basic Register of Individuals (RBI) which constitutes the basic infrastructure for the production of demographic statistics and the universe for the extraction of the surveys’ samples envisaged for the Permanent Census (see Census Law and Plan General Census) and all samples surveys on families. The RBI is “consolidated” annually with reference to 31 December. This consolidation is achieved through a demographic accounting model (MIDEA - Micro-DEmographic Accounting) based on the count of microdata (data on births, deaths and internal and international migration)

The alignment with Census data occurs following an adjustment of the RBI’s over and under-coverage by means of the "signal of life" methodology, performed by the Permanent Census. The "corrected" RBI ensures the alignment of Census data with those of demographic statistics and allows to provide timely estimates of the main outputs on the population.

Following the general principle that persons seeking refuge from Ukraine should be treated in the statistics in the same way as any other population group, with regard to the application of usual residence definitions and in the production of European population and migration statistics, as well as statistics on events. Therefore, refugees from Ukraine are considered as usually residents only if they are enrolled in population register at the end of 2022.

Live births

As far as flows (usually resident population events: births, deaths, immigrants, emigrants, marriages) are concerned, the overall accuracy has substantially improved over time by completely de-materializing the data collection. This allows to incorporate quality controls directly in the data transmission as well as, due to the increased timeliness, a more effective real-time monitoring of the capturing coverage. On the side of the overall accuracy of the accounting procedure, this results in a progressive decrease between provisional monthly data and definitive data (obviously excluding discontinuities induced by purely administrative adjustments).

Following the general principle that events should be counted according to the place of usual residence of the person to which the event occurred. Therefore, events that occurred to Ukrainian refugees who are part of the usual resident population are included in the population statistics reported by Italy. This includes live births to habitually resident women, fetal deaths, deaths, marriages, and divorces.

Deaths

As far as flows (usually resident population events: births, deaths, immigrants, emigrants, marriages) are concerned, the overall accuracy has substantially improved over time by completely de-materializing the data collection. This allows to incorporate quality controls directly in the data transmission as well as, due to the increased timeliness, a more effective real-time monitoring of the capturing coverage. On the side of the overall accuracy of the accounting procedure, this results in a progressive decrease between provisional monthly data and definitive data (obviously excluding discontinuities induced by purely administrative adjustments).

Following the general principle that events should be counted according to the place of usual residence of the person to which the event occurred. Therefore, events that occurred to Ukrainian refugees who are part of the usual resident population are included in the population statistics reported by Italy. This includes live births to habitually resident women, fetal deaths, deaths, marriages, and divorces.

Immigrants

As far as flows (usually resident population events: births, deaths, immigrants, emigrants, marriages) are concerned, the overall accuracy has substantially improved over time by completely de-materializing the data collection. This allows to incorporate quality controls directly in the data transmission as well as, due to the increased timeliness, a more effective real-time monitoring of the capturing coverage. On the side of the overall accuracy of the accounting procedure, this results in a progressive decrease between provisional monthly data and definitive data (obviously excluding discontinuities induced by purely administrative adjustments).

Refugees and asylum seekers are included if they are enrolled in the resident population register.

Emigrants

As far as flows (usually resident population events: births, deaths, immigrants, emigrants, marriages) are concerned, the overall accuracy has substantially improved over time by completely de-materializing the data collection. This allows to incorporate quality controls directly in the data transmission as well as, due to the increased timeliness, a more effective real-time monitoring of the capturing coverage. On the side of the overall accuracy of the accounting procedure, this results in a progressive decrease between provisional monthly data and definitive data (obviously excluding discontinuities induced by purely administrative adjustments).

Refugees and asylum seekers are included if they are enrolled in the resident population register.

Acquisitions of citizenship

Accuracy has improved over time, especially due to the progressively greater completeness and the comparison of different data source used in the process.

The share of records for which probabilistic imputation of the acquisition method is necessary has in fact decreased from almost 30% in 2011 to approximately 10% in recent years.

Loss of citizenship Not available.
Legally induced abortions Not available.
Late foetal deaths Not available.
Infant deaths Not available.
Marriages As far as flows (usually resident population events: births, deaths, immigrants, emigrants, marriages) are concerned, the overall accuracy has substantially improved over time by completely de-materializing the data collection. This allows to incorporate quality controls directly in the data transmission as well as, due to the increased timeliness, a more effective real-time monitoring of the capturing coverage. On the side of the overall accuracy of the accounting procedure, this results in a progressive decrease between provisional monthly data and definitive data (obviously excluding discontinuities induced by purely administrative adjustments).
Divorces Not available.

Data refer to individuals and events.

Data compilation:
Population See point 18.4.
Live births

See point 18.4.

Deaths See point 18.4.
Immigrants See point 18.4.
Emigrants See point 18.4.
Acquisitions of citizenship The various data sets were linked with each other using record linkage techniques. The estimation process was concluded through the use of probabilistic techniques to complete the missing information.
Loss of citizenship Not available.
Legally induced abortions See point 18.4.
Late foetal deaths Not available.
Infant deaths Not available.
Marriages See point 18.4.
Divorces See point 18.4.
Surface in km2 Data are automatically captured by GIS system and imported in excel sheets. The integration between geographical and alphanumerical databases is currently checked.
  List of data sources
Population Basic Register of Individuals alligned with Census.
Live births

Basic Register of Individuals alligned with Census.

Deaths Basic Register of Individuals alligned with Census.
Immigrants Basic Register of Individuals alligned with Census.
Emigrants Basic Register of Individuals alligned with Census.
Acquisitions of citizenship Basic Register of Individuals alligned with Census.
Loss of citizenship Not available.
Legally induced abortions Registration for induced abortions in the register of public and private hospitals.
Late foetal deaths Not available.
Infant deaths Not available.
Marriages Registration of marriages in the civil status register.
Divorces Registration of divorces in the civil status register and in court.
Surface in km2 LAU2s surfaces such as calculated by GIS software. NUTS-1, NUTS-2, NUTS-3 and IT surfaces have been obtained by sum of elementary data classified in each upper level.

Data on population and demographic statistics are disseminated annually.

According to Article 4 (2) of the Commission Implementing Regulation (EU) No 205/2014, each year Member States shall provide the Commission (Eurostat) with data at national and regional level as described in Annex II and related standard reference metadata (in the metadata structure definition defined for the Euro SDMX Metadata Structure) for the reference year within 12 months of the end of the reference year. According to Article 3 (2) of the Commission Regulation (EC) No 862/2007, Statistics on international migration, usually resident population and acquisition of citizenship shall be supplied to the Commission (Eurostat) within 12 months of the end of the reference year.

Full comparability.

  Comparability - over time
Population At national level full comparability since 1956. With regard to NUTS-1, NUTS-2, NUTS-3 – full comparability since 2002.
Live births See under population.
Deaths See under population.
Immigrants See under population.
Emigrants See under population.
Acquisitions of citizenship See under population.
Loss of citizenship Not available.
Legally induced abortions Not available.
Late foetal deaths Not available.
Infant deaths Not available.
Marriages Not available.
Divorces Not available.
Surface in km2 Not available.