Statistics on the production of manufactured goods (prom)

National Reference Metadata in Euro SDMX Metadata Structure (ESMS)

Compiling agency: Czech Statistical Office

Time Dimension: 2019-A0

Data Provider: CZ1


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. Accessibility and clarity
11. Quality management
12. Relevance
13. Accuracy
14. Timeliness and punctuality
15. Coherence and comparability
16. Cost and Burden
17. Data revision
18. Statistical processing
19. Comment
Related Metadata
Annexes (including footnotes)

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


1. Contact Top
1.1. Contact organisation

Czech Statistical Office

1.2. Contact organisation unit

Industrial, Construction and Energy Statistics Department (51)
Industrial Statistics Unit (5101)

1.5. Contact mail address

Český statistický úřad
Na padesátém 81
100 82 Praha 10

2. Metadata update Top
2.1. Metadata last certified 31/08/2020
2.2. Metadata last posted 31/08/2020
2.3. Metadata last update 31/08/2020

3. Statistical presentation Top
3.1. Data description

The PRODCOM inquiry is conducted by the Czech Statistical Office. This is an annual survey of the value and volume of products produced and sold by industrial enterprises in the Czech Republic during the reference year. It is carried out in compliance with EU Council Regulation on the Establishment of a Community Survey of Industrial Production (No. 3924/91).
The PRODCOM survey provides information on PRODuction of the European COMmunity and is compiled from data received from CZ manufacturers. The survey sample is approximately 9.000 entreprises.
Data available include: value and volume of production total and production sold.

3.2. Classification system

In the PRODCOM classification products are grouped by the NACE Rev.2, 4-digits industrial sectors, in which they are primarily produced (i.e. characteristic products). NACE Rev. 2 is the EU system for classifying economic activities. The value and volume data shown for a product, therefore, includes not only the production by enterprises classified to the NACE sector where it is primarily produced but also its subsidiary production by enterprises classified to the other NACE Rev. 2 sectors.
Classification of Products
The PRODCOM list is divided into “Classes” corresponding to the classes of NACE rev 2. Within the  individual classes, the headings of the list are set out in ascending order of their PRODCOM codes. PRODCOM uses an eight-digit product code of the form XX.XX.XX.YY. The first four digits of the code correspond to the 4-digit classes of NACE Rev. 2. The first six digits are the Community Classification of Products by Activity (CPA) codes. The CPA provides a detailed listing of the characteristic products for each 4-digit NACE Rev. 2 economic activity. The last two digits provide a more detailed breakdown of the CPA classes into PRODCOM product headings. There is a direct link between the PRODCOM  classification and the EU foreign trade Combined Nomenclature (CN). Each PRODCOM 8-digit heading covers one or more CN 8-digit headings.
National version of the classification
National version of the classification of products is called CZ-PRODCOM list. The list is more detailed, corresponds to all industrial CPA classes, contains approximately 4200 headings.

The CZ-PRODCOM list uses 10-digits codes, 8 digits correspond to PRODCOM, last 2 digits provide national detail where needed.
To view the national classification, please see the link (Czech only).

3.3. Coverage - sector

The survey covers all industrial enterprises with 20 or more employees or with significant annual turnover, which are wholly, primarily or significantly engaged in industrial production and industrial services in industrial activities.

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 products: the Prodcom List defines the products to be included in the survey. There are  approximately 3.800 headings representing manufactured products and some industrial services.
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

Reporting and observation unit is Enterprise, as identified by national business register.

3.6. Statistical population

The survey population is made up of all enterprises with prevailing industrial activity (classified in NACE 05 to 39) or non-industrial enterprises with important share of industrial acitivites, with 20 or more employees or significant annual turnover.

3.7. Reference area

Czech Republic (no regional breakdown).

3.8. Coverage - Time

The observed period is 1 calendar year.

Electronically, data from 2008 are available in publication Production of Selected Industrial Products, see the Catalogue of Products.

Time series back to 1993 are published, for selected products or aggregates, in the publication.

Older publications (2002 onwards) are available via CZSO Information Services Department (contact data here).

3.9. Base period

Not applicable.

4. Unit of measure Top

Volumes: units of measure are specific to each commodity code - for comprehensive enumaration, please see the List.

Values: data are collected and stored as 1000 CZK, excl. VAT and excise duties.

5. Reference Period Top

The data are from the calendar year 2019.

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

This survey is carried out in compliance with following regulations:

At national level: Act No.89/1995 Coll. on the state statistical service of June 15, 1995, as amended (does not refer to any specific indicator), for full wording see link here.

At EU level: EU Council Regulation on the Establishment of a Community survey of Industrial Production (No 3924/91).

6.2. Institutional Mandate - data sharing

Not applicable at Member States level.

7. Confidentiality Top
7.1. Confidentiality - policy

The confidentiality policy is based on:
National level:

  1. Act No. 89/1995 Coll on the state statistical service as amended (assures protection of individual data and implies the active approach to data protection),
  2. Law on protection of personal data,
  3. The internal Directive No.3/2015 of the Czech Statistical Office (that defines the detailed rules, what exactly is seen as confidential).

EU level:
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

CZ is applying the principle of active confidentiality. Data are only published if they are not confidential, i.e. confidential cells are suppressed from publication. The data allowing direct or indirect identification of individual enterprise can be published under written permission of all related subjects.

8. Release policy Top
8.1. Release calendar

National level:
For each year, the Catalogue of Products is published at the end of the preceding year. The industrial products statistics data are published in electronic publication Production of Selected Industrial Products (No. 150140).

8.2. Release calendar access

National level:
Release calendar is available at the CZSO website, see link here.

8.3. Release policy - user access

National level:
The data are released in the CZSO website on the scheduled day of release. No user has pre-release access to the data.

EU level:
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 - 'Accessibility and clarity') 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. PRODCOM data are accessible through Eurostat´s database.

9. Frequency of dissemination Top


10. Accessibility and clarity Top
10.1. Dissemination format - News release

Not available.

10.2. Dissemination format - Publications

Data (value and volume of total and sold production) are available in electronic publication Production of Selected Industrial Products, see the Catalogue of Products (publication No. 150140).

Selected tables are published in the Statistical Yearbook of The Czech Republic, which is available both in printed and electronic form.

10.3. Dissemination format - online database

Selected tables are available in the CZSO Public Database (VDB2), see link here.

This dissemination channel is currently under development and future changes are foreseen.

10.4. Dissemination format - microdata access

According to the national legislation, the access to the microdata is allowed for scientific purposes only. Each request is decided on individual basis by the relevant expert group.

10.5. Dissemination format - other

The data are regularly transmitted to Eurostat, see link here.

10.6. Documentation on methodology

Important aspects and procedures of quality management within statistical production process as well as methodology are documented by the internal Statistical Metadata System (also in the form of so-called Technical projects), serving as instructions for surveyors (available for every produced statistics).
Technical projects in general contain description of the primary input data, data sources, definition of population, sampling procedure, processing technology, requirements for data transfer, control relations and checks, automatic corrections, derived indicators, definition of organization responsibilities, description of controls and relations, methodology of imputations, definition of outputs, description of input, source and user databases, backups, schedules of project and program preparation, schedules of preliminary and final processing, etc. In the CZSO there is a process of technical project preparation that is coordinated by the Department for Methodology of Performing Statistical Processing. For these purposes, every year the so-called Schedule of technical preparation of statistical surveys is discussed by the advisory bodies of the President, establishing the activities, the terms and the responsible units.
Regarding the documetation accesible to the wide public, a methodology section is published on the CZSO website - Statistics of industrial goods and services (PRODCOM) - Methodology. Advanced information on methodology appears occasionally in specialised periodicals.

10.7. Quality management - documentation

The whole process of data production is driven by internal documentation (Technical project and the Statistical Metadata System), and this can be accessed by all interested parties (see the point 10.6).

"CZSO Quality Commitment" and "Quality policy of the CZSO" are part of the CZSO's Key Documents and are available on the CZSO website - link here.

11. Quality management Top
11.1. Quality assurance

The key components of the quality assurance are the following:
   1. Strategic documents of the CZSO: Mission, Vision and Priorities of the CZSO, Quality commitment, Priority tasks defined for each year (link here);
   2. Irregular methodological audits represent an important tool in quality control. Audits are usually carried out by groups formed both by internal and external experts (NA experts, representatives of universities, ministries, etc); 
   3. Important aspects and procedures of quality management within statistical production process are documented by internal Statistical metadata system, including so-called Technical projects, eventually by instructions for surveyors (available for every produced statistics).
Punctuality and any errors in published data are systematically monitored. The main quality assurance activity for Prodcom is the data validation. Prodcom is published with a high level of detail, its accuracy therefore depends on data being checked in several ways.

11.2. Quality management - assessment

Industrial products statistics data are collected via electronic system. Questionnaire and collecting system provide a number of arithmetic and logical controls, both mandatory and optional between the items in each form and between the forms in the whole annual report. There are a number of arithmetic and logical controls inside the questionnaire. The questionnaire cannot be filled-in successfully before all errors inside the questionnaire, detected by the checking program, have been corrected. 

12. Relevance Top
12.1. Relevance - User Needs

The main users of PRODCOM data can be presented in different groups, namely:

  •  Institutions at European level: Eurostat
  •  Multi-national organizations: United Nations, FAO, ICAC, IFA


  •  Institutions at national level - governamental: Ministry of Industry and Trade
  •  Institutions at national level - non-governamental: Czech National Bank, Trade unions, Media, Researchers and students, Companies

  3) INTERNAL (INSIDE NSI), like: National accounts, Environmental statistics, SBS, External Trade Statistics, Agricultural and Forestry Statistics

12.2. Relevance - User Satisfaction

No users satisfaction surveys are carried out exclusively for Industrial Products Statistics at the national level.

However, CZSO is constantly in contact with different groups of users, e.g. Ministry of Industry and Trade, Czech National Bank, different associations, internal users etc. Formal meetings with users are organized regularly by the General Methodology Department.

12.3. Completeness

The CZSO provides Eurostat all the data requested by the PRODCOM Regulation.

13. Accuracy Top
13.1. Accuracy - overall

Sampling error is not relevant (exhaustive survey).

The survey is based on cut-off treshold, and is covering all the enterprises with prevailing industrial activity (classified in NACE 05 to 39) or non-industrial enterprises with important share of the same industrial acitivites, having 20 or more employees and a significant annual turnover. The sample is taken from Business Register. In 2019, 9.005 enterprises were included.
In 2019, the unit response rate to the PRODCOM Survey was of 80,9 % of all the surveyed enterprises. The issue of unit non-response is treated while collecting the questionnares (logical checks, contact with respondent), being covered by estimations.

Controls on the quality of the data:

  • Stage 1 – Questionnaires are collected and checked by the special office staff. Questionnaire and collecting system provide a number of arithmetic and logical controls. Staff is in close contact with the respondents.
  • Stage 2 – Central staff checks the preliminary results. Final results are approved and prepared for publication.
13.2. Sampling error

Sampling errors do not occur in the PRODCOM survey,as these statistics are collected by non-probability sampling (which means that it is a full coverage survey with a cut-off threshold).

13.3. Non-sampling error

The main types of non-sampling errors can be classified as follows:

  • measurement errors (wrong codes, different measurement unit),
  • data typing errors,
  • unit non-response.

Unit non-response in 2019 is at the level of approx. 19,1 % (small enterprises), each non-respondent is contacted several times (and then estimated, if necessary). All the errors are treated, analysed, consulted with the respondent and corrected, if necessary.

Item non-response indicator is irrelevant for the CZ; the statistical questionary is designed so that the case of item non-response is it not allowed to occure.

Imputation rate is 12,4 %.

14. Timeliness and punctuality Top
14.1. Timeliness

Preliminary data are trasmitted to Eurostat in June, 6 months following the end of reference period.

Industrial Products Statistics data are published on the CZSO website in November, 11 months following the end of reference period in the electronic publication Production of Selected Industrial Products, see the Catalogue of Products (No. 150140).

14.2. Punctuality

The statistics are published without delay in relation to the scheduled date.

The transmission of data to EUROSTAT is in accordance with the transmission programme laid down in article 7 of Council Regulation (EEC) 3924/91.

15. Coherence and comparability Top
15.1. Comparability - geographical

Not applicable at MS level.

15.2. Comparability - over time

An extensive revision of NACE in 2007 has resulted in changes to PRODCOM estimates for the 2008 survey onwards.

Time series of selected products or aggregates back to 1993 are published.

15.3. Coherence - cross domain

Cross-checks are made between SBS, external trade and STS at micro and macro level. The cases with spotted differences are further analysed and, if necessary, corrected as well.

15.4. Coherence - internal

Not applicable.

16. Cost and Burden Top

For 2018, the estimated number of working hours spent by 1 respondent to fill-in the questionnaire: 5 hrs.

17. Data revision Top
17.1. Data revision - policy

Data revisions follow the Revision Policy of the CZSO, which represents one of the key documents of the office (accessible via CZSO website in Czech & English, see link here).

Calendar of standard revisions is being prepared together with the release calendar.

17.2. Data revision - practice

After amandements in legal acts and detection of significant errors, the revisions of statistical idicators are performed.
Users are informed immediately about these results and changes, as well as about the planned revisions.

  • At Y+ 6 months - the preliminary data are published (transmitted to Eurostat pursuant to Council Regulation (EEC) No. 3924/91 of 19 December 1991 on the establishment of a Community survey of industrial production).
  • At Y+ 11 months - more accurate data for the reference period are released (dataset Production of Selected Industrial Products is published).
  • At Y+ 2 years - 1st data revision (corrections performed on the basis of the processing of the next period data) is carried out; the data are then considered as final and are released together with the results for the period Y+1y.

Because of the survey nature, which offers a higher potential for misclassification, occasional revisions over the whole length of the time series can be carried out.

18. Statistical processing Top
18.1. Source data

Type of data source: Statistical survey (Prum 2-01).

Frame on which the source is based: Business Register (RES).

Sample or census: The cut-off treshold.

Criteria for stratification: Characteristics used for stratification are the activity, number of employees and the turnover as registered by the VAT declaration.

Threshold values and percentages: The survey population is made up of all enterprises with prevailing industrial activity (classified in NACE Rev. 2 sections B to E) or non-industrial enterprises with important share of industrial acitivites, with 20 or more employees or significant annual turnover.

Frequency of updating the sample: Sample design is carried out once a year.

18.2. Frequency of data collection


18.3. Data collection

Questionnaires used in the survey: Prum 2-01.

Data collection media: Electronic questionnaire, web questionnaire, printed questionnaire (starting 2013, the printed questionnaires are available only to those respondents which are impossible to contact electronically, or upon request).

Non-response treatment: Phone, email or postal reminders. The activity starts the next day after the deadline of the questionnaire. Fines can be given to non-responding units. The related processes are driven by internal Directive.

18.4. Data validation

The data validation is driven by survey documentation (Technical project, SMS Ulohy), which describes approx.80 validation checks attributed to the processing of the questionnaire Prum 2-01. This contains:

  • Validity of each attribute collected within the questionnaire (e.g. enterprise's ID, NACE, etc.)
  • Logical checks between indicators inside the questionnaire
  • Comparison over time (previous year)
  • Cross-survey checks (STS, SBS)
  • Comparison between enterprises belonging to the same category

Feedback from the validation on micro level is available also to reporting units in case of electronic data collection (electronic questionnaire, online data collection).

18.5. Data compilation

Data processing

When the survey population is selected from the Business Register, a detailed analysis is carried out by the staff dealing with the new "births" or reorganisations and, if there are issues detected, these are fed back to Business Register.

At level of the Regional Statistical Office:

  •   receive the questionnaires;
  •   data recording into a local database;
  •   running of the IT tools for detecting the errors; data are corrected where necessary
  •   contacts with respondents.

At Central Statistical Office, the folowing actions are taking place:

  •   data validation from the macro level, and where necessary the enterprises are contacted through the Regional Statistical Offices
  •   non-response treatment.

Estimates for non-response

Not responding units are imputed. Estimation for non-response is based on the results of the unit responded in previous period(s) or related enterprises. The estimate is based on STS and SBS data.

Results are aggregated to CZ-PRODCOM and PRODCOM code level, confidentiality is treated.

Training of staff – staff are given training on a regular basis which ensures that they are fully conversant with the survey forms.

18.6. Adjustment

Not applicable.

19. Comment Top
Impact of the COVID-19 pandemic on the quality of PRODCOM data
As this dataset refers to the year 2019, impact of the COVID-19 pandemic did not cause any significant problems with data processing and their quality. During the COVID-19 lockdown we registered higher non-response, but it was treated in a standard way and did not affected the results.

Related metadata Top

Annexes Top