Statistics on the production of manufactured goods (prom)

Reference Metadata in Euro SDMX Metadata Structure (ESMS)

Compiling agency: Eurostat, the statistical office of the European Union


Eurostat metadata
Reference metadata
1. Contact
2. Metadata update
3. Statistical presentation
4.Unit of measure
5. Reference Period
6. Institutional Mandate
7. Confidentiality
8. Release policy
9. Frequency of dissemination
10. Dissemination format
11. Accessibility of documentation
12. Quality management
13. Relevance
14. Accuracy
15. Timeliness and punctuality
16. Comparability
17. Coherence
18. Cost and Burden
19. Data revision
20. Statistical processing
21. Comment
Related Metadata
Annexes (including footnotes)
National metadata

National reference metadata

National metadata produced by countries and released by Eurostat




For any question on data and metadata, please contact: EUROPEAN STATISTICAL DATA SUPPORT

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1. Contact Top
1.1. Contact organisation

Eurostat, the statistical office of the European Union

1.2. Contact organisation unit

G5: Goods - Production and International trade

1.5. Contact mail address

2920 Luxembourg LUXEMBOURG


2. Metadata update Top
2.1. Metadata last certified 13/03/2014
2.2. Metadata last posted 13/03/2014
2.3. Metadata last update 13/03/2014


3. Statistical presentation Top
3.1. Data description

Prodcom contains Prodcom statistics on production of manufactured goods together with related external trade data:

  • The data characteristics described in this documentation refer to the Prodcom production data. For external trade data characteristics, please see documentation for Comext
  • The Prodcom data includes:
    - the physical volume of production sold during the survey period
    - the value of production sold during the survey period
    - for some products, the volume of total production during the survey period
  • The Prodcom data is obtained by the National Statistical Institutes (NSIs) who conduct a survey of enterprises
  • Eurostat calculates EU totals at EU 15, EU 25 and EU 28 level (depending on the year) from the national data
3.2. Classification system

The Prodcom survey is based on the Prodcom List, consisting of about 3900 products. The 8-digit codes used in the List are based on the 6-digit CPA headings and hence the 4-digit NACE rev 1.1. From 2008 onwards the Prodcom code is linked to CPA 2008 and NACE Rev. 2. The link to NACE enables the NSIs to use the Business Register to identify the enterprises likely to be manufacturing the product.

The Prodcom List is revised every year

The Prodcom codes normally relate to one or more Combined Nomenclature headings, thus enabling external trade data to be related to production data.

The Geonomenclature is used to identify reporting countries.

3.3. Coverage - sector

Prodcom covers sections C, D and E of NACE Rev 1.1 (sections B and C of NACE Rev 2).

3.4. Statistical concepts and definitions

The purpose of the statistics is to report, for each product in the Prodcom List, how much has been produced in the reporting country during the reference period. This means that Prodcom statistics relate to products (not to activities) and are therefore not strictly comparable with activity-based statistics such as Structural Business Statistics. The NACE codes on which Prodcom codes are based merely serve to identify the enterprises that should be surveyed in order to determine the amount of production of the product.

The NSI in each reporting country carries out a survey of industrial production in that country, collates the results and transmits them to Eurostat. Eurostat calculates EU totals and publishes the national and EU data together with the related external trade data.

Prodcom differs from external trade statistics in that the latter can be thought of as event-based: each time a product crosses a border it is registered as a 'trade', and if the same product crosses borders several times it is recorded as several trades.

On the other hand a product is never produced more than once. It is important to avoid double counting, since this inflates the reported quantity of the product produced. As a general principle, when a production process takes as input a material that does not match the description of the product, and produces as output something that does, then production of the product should be recorded. On the other hand if the processing merely works on a product without changing the heading under which it is classified, it should not be recorded, since this would result in double counting.

This means that the link to the turnover of an enterprise is tenuous, since some of the enterprise's activity does not result in new products and should not be recorded in Prodcom.

Reporting countries have a major difficulty in identifying all the enterprises that produce a product. Although they can use the Business Register to find enterprises whose primary or secondary activities are linked to the product being surveyed, they can never be sure that they have identified all producers of the product. In addition, in order to reduce the burden on small enterprises, the Prodcom Regulation states that NSIs are not required to survey enterprises with less than 20 employees. This means that it is impossible for NSIs to know if they have achieved 100% coverage of the product, or even to know what percentage coverage they have achieved.

The products: the Prodcom List defines the products to be included in the survey. There are approximately 3900 headings representing manufactured products and some industrial services, in the following NACE  Rev.2 sectors:      

  • Mining of metal ores
  • Other mining and quarrying
  • Mining support service activities
  • Manufacture of food products
  • Manufacture of beverages
  • Manufacture of tobacco products
  • Manufacture of textiles
  • Manufacture of wearing apparel
  • Manufacture of leather and related products
  • Manufacture of wood and of products of wood and cork, except furniture; manufacture of articles of straw and plaiting materials
  • Manufacture of paper and paper products
  • Printing and reproduction of recorded media
  • Manufacture of coke and refined petroleum products
  • Manufacture of chemicals and chemical products
  • Manufacture of basic pharmaceutical products and pharmaceutical preparations
  • Manufacture of rubber and plastic products
  • Manufacture of other non-metallic mineral products
  • Manufacture of basic metals
  • Manufacture of fabricated metal products, except machinery and equipment
  • Manufacture of computer, electronic and optical products
  • Manufacture of electrical equipment
  • Manufacture of machinery and equipment n.e.c.
  • Manufacture of motor vehicles, trailers and semi-trailers
  • Manufacture of other transport equipment
  • Manufacture of furniture
  • Other manufacturing
  • Repair and installation of machinery and equipment

The reporting countries: those countries that conduct the survey and transmit the results to Eurostat. The countries are identified by the Geonomenclature codes.

The value and the volume of production. The value is expressed in national currency but where necessary converted to Euro by Eurostat. The volume is expressed in a unit specified for each product.

The volume unit: the measurement unit, such as kilograms, square metres etc. used to indicate the volume of goods produced.

Production type: Either Sold Production (the value  and volume of the product sold by the enterprise) or Total Production (the volume of all production of the product, including both the proportion that is sold and the proportion that is retained by the enterprise for adding to stocks, using in further processing etc.). From 2006 onwards, for those products where Total Production is required, Sold Production by value and volume must be reported as well.

3.5. Statistical unit

The enterprise (within one country) is the observation unit surveyed by the National Statistical Institute. The production for each Prodcom product from all surveyed enterprises in the country is aggregated before the results are sent to Eurostat.

3.6. Statistical population

The survey population of the reference period shall be enterprises whose principal activity or one of its secondary activities is listed in section B, or C of the classification of economic activities in the European Community (NACE Rev.2).

3.7. Reference area

European Union + Norway and Iceland.

Each country provides the production statistics relating to their country: the Member Statesa and EEA-EFTA countries (Norway and Iceland) transmit Prodcom data to Eurostat.

3.8. Coverage - Time

Since 1995 for annual data and from 2003 to 2005 for monthly steel data

3.9. Base period

Not applicable


4. Unit of measure Top

Production is measured by value (in Euro) and by the volume (kg, m2, number of items etc) that is appropriate for the product. for more info, please see the Annex "List of unit measures used in PRODCOM"


5. Reference Period Top

Annual data (all products) and monthly data (steel products - 2003 to 2005 only)


6. Institutional Mandate Top
6.1. Institutional Mandate - legal acts and other agreements

COUNCIL REGULATION (EEC) N° 3924/91 of 19 December 1991 on the establishment of a Community survey of industrial production

COMMISSION REGULATION (EC) No 912/2004 of 29 April 2004 implementing Council Regulation (EEC) No 3924/91 on the establishment of a Community survey of industrial production

COMMISSION REGULATION (EC) No 347/2003 of 30 December 2002 establishing for 2003 the .Prodcom list. of industrial products provided for by Council Regulation (EEC) No 3924/91

COMMISSION REGULATION (EC) No 210/2004 of 23 December 2003 establishing for 2004 the "Prodcom list" of industrial products provided for by Council Regulation (EEC) No 3924/91

COMMISSION REGULATION (EC) No 317/2006 of 22 December 2005 establishing for 2005 the 'Prodcom list' of industrial products provided for by Council Regulation (EEC) No 3924/91

COMMISSION REGULATION (EC) No 294/2007 of 20 February 2007 establishing for 2006 the 'Prodcom list' of industrial products provided for by Council Regulation (EEC) No 3924/91

COMMISSION REGULATION (EC) No 1165/2007 of 3 September 2007 establishing for 2007 the Prodcom list of industrial products provided for by Council Regulation (EEC) No 3924/91

COMMISSION REGULATION (EC) No 36/2009 of 11 July 2008 establishing for 2008 the Prodcom list of industrial products provided for by Council Regulation (EEC) No 3924/91

COMMISSION REGULATION (EU) No 163/2010 of 9 February 2010 establishing for 2009 the Prodcom list of industrial products provided for by Council Regulation (EEC) No 3924/91

COMMISSION REGULATION (EU) No 860/2010 of 10 September 2010 establishing for 2010 the Prodcom list of industrial products provided for by Council Regulation (EEC) No 3924/91

COMMISSION REGULATION (EU) No 830/2011 of 27 July 2011 establishing for 2011 the ‘Prodcom list’ of industrial products provided for by Council Regulation (EEC) No 3924/91

COMMISSION REGULATION (EU) No 907/2012 of 20 August 2012 establishing for 2012 the ‘Prodcom list’ of industrial products provided for by Council Regulation (EEC) No 3924/91

COMMISSION REGULATION (EU) No 936/2013 of 12 September 2013 establishing for 2013 the ‘Prodcom list’ of industrial products provided for by Council Regulation (EEC) No 3924/91

6.2. Institutional Mandate - data sharing

None


7. Confidentiality Top
7.1. Confidentiality - policy

Regulation (EC) No 223/2009 on European statistics (recital 24 and Article 20(4)) of 11 March 2009 (OJ L 87, p. 164), stipulates the need to establish common principles and guidelines ensuring the confidentiality of data used for the production of European statistics and the access to those confidential data with due account for technical developments and the requirements of users in a democratic society.

7.2. Confidentiality - data treatment

Reporting countries mark some data as confidential and Eurostat is legally bound to suppress such data from publication. However Eurostat is able to publish EU totals containing confidential data if this can be done without revealing the confidential items within the total. A "Confidentiality Charter" agreed with the Member States specifies the criteria which must be met before an EU total can be considered safe to publish.

In the past, unsafe EU totals were suppressed from publication. However a procedure of"controlled rounding" is now applied to such totals. This has the effect of giving a range within which the true total lies, without being so precise that the confidential data is revealed. For instance instead of publishing a value of 52178, a value of 52000 base 500 might be published, indicating that the true value lies somewhere between 51500 and 52500.


8. Release policy Top
8.1. Release calendar

The deadline for Member States to transmit data to Eurostat is 30 June of the reference year + 1. Eurostat first publishes this data in mid July, two weeks after the deadline. However reporting countries may submit revisions at any time, so Eurostat also republishes the data in the middle of any month when new data has been received since the last publication.  In practice this means that data is republished in most months, sometimes even for earlier years.

8.2. Release calendar access

Publications release calendar

8.3. Release policy - user access

In line with the Community legal framework and the European Statistics Code of Practice Eurostat disseminates European statistics on Eurostat's website (see item 10 - 'Dissemination format') respecting professional independence and in an objective, professional and transparent manner in which all users are treated equitably. The detailed arrangements are governed by the Eurostat protocol on impartial access to Eurostat data for users.


9. Frequency of dissemination Top

Annual (all products) and monthly (steel products, 2003 to 2005 only), updated monthly as required to publish revised data.


10. Dissemination format Top
10.1. Dissemination format - News release

None

10.2. Dissemination format - Publications

Prodcom data is included in the following publications:

  • Statistics Explained article
  • Eurostat Yearbook
  • Pocketbook: Key figures on Europe
  • Eurostat/Rosstat co-publication
  • Statistics in Focus
10.3. Dissemination format - online database

Please consult free data on-line or refer to user support

Prodcom data is available on-line in two forms:
- Database form, including trade data
Excel spreadsheets (production data only).

Following the introduction of Prodcom codes based on NACE Rev. 2 for 2008 data, two versions of the data are provided for all years: one using codes based on NACE Rev. 1.1 and one using codes based on NACE Rev. 2. The conversion is incomplete since it can only be done when there is a direct correspondence between the old and new codes or where two or more codes are merged into one.

10.4. Dissemination format - microdata access

None

10.5. Dissemination format - other

Internet address: http://ec.europa.eu/eurostat

CD ROM:

Comext DVD, issued monthly


11. Accessibility of documentation Top
11.1. Documentation on methodology

Europroms Userguide (see Annex at the bottom of the page).

11.2. Quality management - documentation

Eurostat maintains a Prodcom Quality Report (see Annex at the bottom of the page) which is updated annually to reflect the quality of the latest data received.


12. Quality management Top
12.1. Quality assurance

Before sending data to Eurostat, Member States apply a number of micro and macro plausibility checks at different aggregation levels, between historic and current data and with other sources.

12.2. Quality management - assessment

Eurostat applies its own data checks by comparing unit values across countries, and comparing historical and current data and with additional checks. Any anomalies identified are reported to the declarant country for explanation or correction. In addition, if users question the accuracy of data, the declarant country is asked to investigate it. 

More details can be found in the Prodcom Quality Report (see Annex at the bottom of the page)


13. Relevance Top
13.1. Relevance - User Needs

The European Commission and the national governments need data to monitor industry and markets and to develop their corresponding policies. To meet these requirements, Eurostat and Member States have developed the Prodcom system and disseminate data which allow international comparisons between all Member States and other countries. The enterprises benefit from data provided by the Prodcom system which allow them to evaluate markets and opportunities for development.

The most important categories of users are:

  • the European Commission, 
  • the national governments and their national authorities (i.e. public institutions, central and local administrations),
  • the enterprises and trade associations,
  • the research institutions and students,
  • the media.
13.2. Relevance - User Satisfaction

In 2005 Eurostat surveyed the opinion of the known users of Prodcom. The results confirmed the role of Prodcom data in analysing the competitive performance of individual countries, in preparing surveys, in analysing the impact of legislation on markets and sectors and in assessing the need for state aid. 

The survey also underlined users' dissatisfaction in 4 areas:

Confidential data:  a lot of data has to be suppressed due to confidentiality, reducing the value of the statistics. In the meantime Eurostat has introduced a system of controlled rounding of EU totals that would otherwise be suppressed, greatly increasing the number of published EU totals.

Missing data: in the past, in cases where a country was unable to report data for a product, not only was the national data unavailable, but the EU total could not be calculated either. Eurostat has now introduced a system of estimating missing data so that affected EU totals can be calculated and published. This measure, combined with the controlled rounding of EU totals, means that EU totals are now published for all products.

Late availability of data: the deadline for transmission of data for reference year t is t + 6 months. Given that the enterprises cannot be asked to report their annual production until the relevant year is complete, this is a very tight deadline for the reporting countries, which must wait for the responses from enterprises, chase up non-response, compile the national data and apply quality checks. In the past many countries failed to meet the deadline, often by several months, so that full data could not be published until about one year after the end of the reference period. However recently (2007 - 2010) the timeliness has improved enormously, to the extent that Eurostat has been able to publish full data in mid-July of year t + 1.

Lack of detail: it would clearly be useful to have a greater level of detail in the statistics; however this would come at a cost - the increased burden on the enterprises that are required to report their production. It is of great concern to the Commission that the administrative burden on businesses should be minimised, so a balance must be struck between an acceptable level of detail and the burden imposed on business.

13.3. Completeness

Following the receipt of data from reporting countries, a "compliance score" is calculated. This combines the timeliness of the transmission with the percentage of data reported. Since the introduction of this system, nearly all countries include 100% of the data in their transmission file, with all exceeding 95%. 


14. Accuracy Top
14.1. Accuracy - overall

The Member States decide themselves which sampling design they apply to collect data for Prodcom survey.

The Statistical Business Register [1] (SBR) is the main source for maintaining the sampling frame of business surveys. Consequently, the sampling frame for the Prodcom survey is drawn from SBR and contains all enterprises, authorities and organisations that carry out any target industrial activity and have 20 employees or more.

The overall national sample of enterprises has to be designed in such a way that it leads to representative results at the level of the national economy and of each product included in the Prodcom List (i.e. heading level).

Non-probabilistic sampling is applied in Prodcom surveys and the sample is a cut-off sample. Very few countries draw up a probabilistic sample according to the simple random sampling design for small enterprises. The sample of small enterprises is drawn up especially for those NACE classes where it is impossible to cover at least 90% of national production.

[1] The Statistical Business Register (SBR) is described in the Council Regulation (EEC) No. 2186/93 of 22 July 1993.

14.2. Sampling error

Sampling errors do not occur in the Prodcom survey, as these statistics are collected by non-probability sampling which means a full coverage survey with a cut-off threshold (i.e. cut-off sample). The part of the sample drawn up by a simple random sampling design is so negligible that it is not needed to collect the corresponding CVs.

CV=coefficient of variation computed as a ratio between the square root of the estimate of the sampling variance and the estimated value.

14.3. Non-sampling error

1. Coverage errors

Coverage represents the extent to which the target population coincides with the frame population.

The coverage for the Prodcom survey is impossible to determine because the targeted population should be defined in terms of all enterprises which manufacture goods included in the Prodcom List. No reporting country has the resources to produce a corresponding sampling frame. Consequently, since the Statistical Business Register (SBR) does not offer information on products but only on economic activities, the coverage of Prodcom survey is generally assessed by using enterprise turnover as a reference.

The approach most used by reporting countries to assess the coverage of Prodcom survey is in terms of turnover (or total production value) as the ratio between 

  • total turnover (or total production value) of all observational units in NACE Rev. 2 07-33 in the Prodcom sample and,
  • total turnover (or total production value) of all relevant enterprises (i.e. enterprises with primary and secondary activity within NACE Rev. 2 07-33 in the SBS population.).

However, this approach does not guarantee that the biggest enterprises by total turnover/total production value actually also cover 90% of industrial activities.

Additionally, there are coverage errors due to the divergence between the quality of the SBR as the source for the sampling frame and the effective enterprise population, namely:

  • under-coverage: there are targeted population units which are not accessible via the sampling frame;
  • over-coverage: there are units accessible via the sampling frame which do not belong to the target population (i.e. out of scope units);
  • multiple listing: some units may be present more than once in the sampling frame

By comparing the Member States' Quality Reports we can estimate that the overall coverage error at EU27 level is under 10%.

2. Measurement errors

The main reason that a measurement error can occur is erroneous information on the products produced by an enterprise. The enterprises are not using the Prodcom List for their own needs and it could be hard for an enterprise to update its internal registries in order to report according to Prodcom demands. More precisely, a measurement error by the respondent may concern:

  • wrong industrial product codes;
  • wrong measurement unit or reporting a volume unit inconsistent with the Prodcom list;
  • wrong conversion from one measurement unit to another;
  • which heading has to reported (sold and/or total);
  • reporting of work under subcontracting, and so on.

The approach most used to minimise the measurement errors is to use customised questionnaires by pre-printing Prodcom codes as far as is possible. Also, particular attention is paid to providing the respondent with professional guidance and keeping a close contact with them.

As a very efficient and powerful approach to minimising errors in general and measurement errors in particular, Member States are developing electronic questionnaires and using internet facilities as far as possible. However this depends heavily on the resources and internal environment of each reporting country.

3. Processing errors

Processing errors occur during the process from the point when data are collected to the point when they are ready to be analysed: coding data entry, data editing, imputation, and so on.

It is not possible to present a general description of data processing for Prodcom surveys due to the high diversity in practices in the reporting countries. All reporting countries fulfil similar tasks. The difference is in the logical order and means (i.e. scanning, manually entry, automatically entry, fax use, software used, etc.).

Therefore, a lot of micro and macro plausibility checks are performed at different aggregation levels, between historical data and actual data and with other sources (i.e. business surveys, STS1 and SBS2 especially). These operations are highly interconnected and interdependent and could be grouped as follows:

  • logical checks;
  • checking coherence at a single product level by comparing the value of different indicators (i.e. mean value, minimum/maximum value, median value) for a given variable (i.e. value, volume, total production);
  • checking coherence between different variables(i.e. sold/total production) at different aggregate levels(i.e. observational unit, observational unit and product, product, and so on);
  • checking coherence between monthly/annual data;
  • checking coherence with external sources (i.e. STS data, SBS data, foreign trade data).

There are also cases where some micro data (e.g. sensitive units and/or products) are individually checked by the statisticians on the basis of their experience and information about the individual unit and the economic branch concerned.

Missing data is completed with extra enquiries by phone or e-mail, with estimates based on previous data or turnover data or with data obtained from the internet home pages of enterprises.

As with measurement errors, the past experience of most of reporting countries has shown very clearly that processing errors can be minimised to a great extent when electronic facilities (i.e. electronic questionnaires, web-based questionnaire, scanning, electronic/online checks, and so on) are used.

4. Non-response errors

Non-response results from a failure to collect complete information on all units in the selected sample except non-eligible units (i.e. dead units, out-of-scope units and non-contacts). There are two types of non-response. Firstly, a sampled unit that is contacted may fail to respond; this is called "unit non-response". Secondly, the sampled unit may respond incompletely to the questionnaire; this is called "item non-response". The unit non-response is adjusted by imputation methods and auxiliary information where it is available. The item non-response is adjusted either by imputation methods or estimation methods.

Normally, no imputation or estimation methods should be applied for new observation units (i.e. units included for the first time in the survey and no time data series is available for them) which are not in the position to respond within the reporting period.

1. STS = Short Term Statistics.

2. SBS = Structural Business Statistics


15. Timeliness and punctuality Top
15.1. Timeliness

NSIs are required to transmit production data to Eurostat within 6 months of the end of the reference year for annual data.

15.2. Punctuality

Over the last few years, punctuality of data transmission has improved enormously. Now, almost all reporting countries transmit data by the deadline, with the rest normally transmitting within the next few days. This enables Eurostat to publish the previous year's data for the first time in mid-July, 2 weeks after the deadline.


16. Comparability Top
16.1. Comparability - geographical

By its nature, there is no objective way to compare levels of production of a product in different countries. However, Eurostat assumes that there will be some correlation of unit price (value/volume) between countries.

Eurostat calculates the unit price for each product for each country and takes the median value over the observations for two years. When new data arrives, the unit prices are compared with the corresponding medians and outliers are identified.

Large deviations from the median are not necessarily the result of an error, but the reporting country is informed of such cases and asked to check the data. This sometimes results in corrections to the data, but sometimes a reasonable explanation can be given for the deviation.

16.2. Comparability - over time

Eurostat compares corresponding data over successive years, to identify big increases or decreases in production. A sudden change from one year to the next does not necessarily signal an error, but if the level reverts to the preceding norm in the following year there is almost certainly an error. Such cases are notified to the reporting country for checking and correction if necessary.


17. Coherence Top
17.1. Coherence - cross domain

The value of production for all the products in the same 4-digit NACE class can be summed and compared with national turnover in that class according to Structural Business Statistics. This exercise requires access to confidential data.

The Prodcom Council Regulation stipulates that at least 90% of production in each NACE class should be reported, and comparison with SBS provides a means of checking this. (However the sum of production in a NACE class is not strictly comparable with activity in the NACE class. Furthermore even if 90% of production in the NACE class is achieved, this says nothing about the coverage of individual products).

For most products it is possible to obtain the related External Trade data from the Comext system, by taking data for all the Combined Nomenclature headings that match one Prodcom heading. Trade data reported by the same country is aggregated for all matching CN headings and for all partners, to obtain single import and export figures for each Prodcom heading. (For EU totals, where production and trade data for all EU countries is aggregated, only trade with countries outside the EU is included. This ensures that we always show the trade crossing the external borders of the territory in question.)

The main purpose of this is to publish the trade and production data together in Europroms, but it also enables us to calculate apparent consumption, defined as production + imports - exports. Occasionally the result of this calculation is negative. In reality this is not possible, so the presence of a negative result indicates a problem with either the production or external trade figures.

A Quality Report(see Annex at the bottom of the page)gives details of the results of these comparisons, together with summaries of timeliness and completeness of the data. It is regularly updated.

17.2. Coherence - internal

Not applicable


18. Cost and Burden Top

By their nature, production statistics can only be obtained by surveying producer enterprises; the data is not available from administrative sources. Therefore the statistics rely on questionnaires completed by enterprises.

The requirements imposed by European regulation have been considerably reduced in recent years: the number of headings has been reduced from nearly 7000 to less than 4000, the amount of detail per heading has been reduced and quarterly and monthly surveys have been discontinued. However, Member States often continue to conduct more detailed or more frequent surveys to satisfy national needs, so the reduction in requirements at European level does not always result in a reduction in the burden for enterprises. 

Several surveys have been conducted by Eurostat and DG Enterprise to measure the burden imposed by statistical surveys, including Prodcom. 


19. Data revision Top
19.1. Data revision - policy

Eurostat accepts all new versions of data transmitted by reporting countries. When reporting errors or anomalies to NSIs, Eurostat expects them to send revised data to resolve the problems identified.

19.2. Data revision - practice

The impact of revision is measured every year and is part of the Quality Report.

  Revision Between July Year+1 and December Year+1 Revision Between July Year+1 and January Year+2
Reference Year 2009 -1.40 % -0.10%
Reference Year 2010 +0.10% +0.04%

 On average we are receiving 2.66 files for one reference period.

 


20. Statistical processing Top
20.1. Source data

Survey of enterprises, together with any other sources or use of estimates, deemed appropriate by the NSI.

The survey is conducted by questionnaire, targeted to enterprises likely to be producing particular products. (This can be established from the activity classification of enterprises in the business register). Some countries survey a sample of enterprises.

20.2. Frequency of data collection

The frequency specified by European legislation is for an annual survey. Some countries conduct more frequent surveys to satisfy national requirements.

20.3. Data collection

NSIs are providers of Prodcom statistics.

EDAMIS is used with dataset PRODCOM_A_A. All organisations and providers are defined in EDAMIS.

The dataset might include confidential data. The standard encryption facility of EDAMIS is available for countries (public/private keys managed by unit G2).

Data are stored in secured environment.

20.4. Data validation

Validation and plausibility checks are applied to data received by Eurostat. Any errors or anomalies are reported to the NSI, but all error-free data is published immediately.

20.5. Data compilation

Eurostat creates European aggregates for EU 15, EU 25 and EU 27. Estimates are made for missing data to ensure that EU totals can be calculated for all products. A set of rules, agreed with the Member States, is applied to ensure that no aggregates containing confidential data are published if this would allow a user to derive the national confidential data.  For those aggregates that are unsafe to publish according to these rules, rounding is applied so that an approximate value within a range can be published without revealing the confidential national data included in the aggregate.

The amount of production of each product in the Prodcom List is recorded, normally by value and volume.

20.6. Adjustment

Reporting countries give value data in national currency and Eurostat converts this to Euro where necessary.


21. Comment Top

Eurostat updates the published data once per month, to include any new or revised data received in the preceding month.


Related metadata Top


Annexes Top