1. Contact | ||||||||||||
1.1 Contact organisation | ||||||||||||
National Institute of Statistics, Istat | ||||||||||||
1.2 Contact organisation unit | ||||||||||||
Directorate of Business Statistics (DCSE) | ||||||||||||
1.3 Contact name | ||||||||||||
1.4 Contact person function | ||||||||||||
1.5 Contact mail address | ||||||||||||
Via Tuscolana, 1788 00173 Rome Italy | ||||||||||||
1.6 Contact email address | ||||||||||||
1.7 Contact phone number | ||||||||||||
1.8 Contact fax number | ||||||||||||
2. Metadata update | ||||||||||||
2.1 Metadata last certified | ||||||||||||
17/02/2017 | ||||||||||||
2.2 Metadata last posted | ||||||||||||
17/02/2017 | ||||||||||||
2.3 Metadata last update | ||||||||||||
17/02/2017 | ||||||||||||
3. Statistical presentation | ||||||||||||
3.1 Data description | ||||||||||||
PRODCOM is an annual survey on the value and volume of products produced by industrial enterprises in Italy and sold 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 italian manufacturers. The survey sample is little more than 40,000 entreprises, covering 234 industries, derived from sub-sectors of the total manufacturing sector, and about 3,900 products (that include also industrial service). Data available include national main indicators and their definition:
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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). 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. At national level: To view the national classification, please see ATECO2007 (http://www.istat.it/it/archivio/17888) | ||||||||||||
3.3 Coverage - sector | ||||||||||||
The survey covers all industrial enterprises with 3 or more employees, which are wholly or primarily engaged in industrial production and industrial services in the Mining, Quarrying, and Manufacturing industries. Under Prodcom, the NACE Rev2 classification is having covered the sections B and C, comprising sections 07-33, but excepting 09 and 19. In order to fulfil the regulation provisions (to reach 90% representativeness, Art.3), a probabilistic sample based survey strategy has been designed. It involves a sample of small industrial enterprises (from 3 to 19 employees) and the totality of units that belong to medium and large companies (20 employees and over). The sampling method is based on an equiprobabilistic selection in each stratum, obtained by the combination of two variables: class of employees and class of economic activity. Variables that are used to evaluate the sample size in each stratum are: turnover, added-value and number of employees. The size is obtained by applying the Bethel method. | ||||||||||||
3.4 Statistical concepts and definitions | ||||||||||||
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.) are investigated for each eadings. Where Total Production is required, Sold Production by value and volume must be reported as well. In Italy it is investigated also:
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3.5 Statistical unit | ||||||||||||
The reporting unit is Enterprise. The observation unit is Local Unit(s). The results are compiled at enterprise level before being published. We add up the amounts related to each enterprise. | ||||||||||||
3.6 Statistical population | ||||||||||||
The survey population is made up of all industrial enterprises in NACE 07-33 with more than 20 persons and a sample of small industrial enterprises (from 3 to 19 employees). | ||||||||||||
3.7 Reference area | ||||||||||||
Italy - The whole national territory. | ||||||||||||
3.8 Coverage - Time | ||||||||||||
The period observed is one calendar year. Italian industrial products statistics date back to 1996. Electronically, data from 1996 onwards are available at http://ec.europa.eu/eurostat/web/prodcom/data/excel-files-nace-rev.1.1. For 1996 to 2007, the files contain the original data based on NACE Rev.1.1. For 2008 onwards, the files contain data that has been converted where possible from the data based on NACE Rev.2. | ||||||||||||
3.9 Base period | ||||||||||||
Not applicable | ||||||||||||
4. Unit of measure | ||||||||||||
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5. Reference Period | ||||||||||||
Year 2015. | ||||||||||||
6. Institutional Mandate | ||||||||||||
The survey population is made up of all industrial enterprises in NACE 07-33 with more than 20 persons and a sample of small industrial enterprises (from 3 to 19 employees). The population is selected every year from Statistical Business Register | ||||||||||||
6.1 Institutional Mandate - legal acts and other agreements | ||||||||||||
The survey is carried out in compliance with following regulations: National law: The process is included in the National Statistical Program (PSN) that is annually approved by Decree of the President of Republic (DPR) on the basis of the Law no.125 of 30 October 2013 (http://www.gazzettaufficiale.it/eli/id/2015/11/05/15A08158/sg ). The statistical survey is mandatory to be filled-in by the private units. More info about national law regarding statistics here: http://www.istat.it/it/istituto-nazionale-di-statistica/organizzazione/normativa. | ||||||||||||
6.2 Institutional Mandate - data sharing | ||||||||||||
not applicable | ||||||||||||
7. Confidentiality | ||||||||||||
7.1 Confidentiality - policy | ||||||||||||
Several legal acts are present in Italy to guarantee the confidentiality of data requested to enterprises for statistical purposes. Italian full policy on data confidentiality is available at http://www.istat.it/it/istituto-nazionale-di-statistica/organizzazione/normativa/normativa-nazionale. The Statistical law of Italy stipulates that following data must be confidentialised:
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7.2 Confidentiality - data treatment | ||||||||||||
The Statistics Italy's confidentiality policy for Prodcom data stipulates that a certain Prodcom code will be flagged where there are less than 3 reporting companies (for each published indicator). | ||||||||||||
8. Release policy | ||||||||||||
8.1 Release calendar | ||||||||||||
The provisional data for 2015 are available at http://dati.istat.it (published in July 2016). The revised data will be available starting February2017. | ||||||||||||
8.2 Release calendar access | ||||||||||||
The release calendar can be accessed at http://www.istat.it/it/informazioni/per-i-giornalisti/calendario. | ||||||||||||
8.3 Release policy - user access | ||||||||||||
The information is available on line on http://www.istat.it/it/archivio/12026 | ||||||||||||
9. Frequency of dissemination | ||||||||||||
Data are disseminated at national level on yearly basis. | ||||||||||||
10. Accessibility and clarity | ||||||||||||
10.1 Dissemination format - News release | ||||||||||||
Not avalaible | ||||||||||||
10.2 Dissemination format - Publications | ||||||||||||
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10.3 Dissemination format - online database | ||||||||||||
Online DB "I.Stat" (data from 2011): http://dati.istat.it/?lang=en&SubSessionId=6f7f122a-34b5-4c29-9fe6-62ebc0f58b96 | ||||||||||||
10.4 Dissemination format - microdata access | ||||||||||||
As part of microdata release, Istat offers a research data centre: ADELE Laboratory (Laboratory for Elementary Data Analysis), a “secure” site accessible by researchers and academics enabling them to conduct their own statistical analyses on microdata from the Institute's surveys in compliance with legislation concerning the confidentiality of personal data (http://www.istat.it/en/products/microdata-files) | ||||||||||||
10.5 Dissemination format - other | ||||||||||||
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10.6 Documentation on methodology | ||||||||||||
On webpage of online database there is a short description of methodology. (http://dati.istat.it/?lang=en, and choose in left-upper side the theme "Industry and Construction", then "Production" and "Production volume"). | ||||||||||||
10.7 Quality management - documentation | ||||||||||||
No documentation on quality management are avalaible on NSI's site. Only a document was made ten year ago (see the attached file) | ||||||||||||
11. Quality management | ||||||||||||
11.1 Quality assurance | ||||||||||||
Since 90s Istat adopted a systematic approach to ensure quality in both statistical information and service to the community. For this purpose, the Institute has defined a quality policy providing itself with appropriate tools as well as management changes to carry it out. Istat quality policy is coherent with the European framework developed by Eurostat, taking up its main principles and definitions. In 2005, the European Statistics Code of Practice (revised in 2011) established the principles to follow in order to ensure and strengthen both accountability and governance of the European Statistical System and the National Statistical Systems within it. Essential points of Istat quality policy are:
For details: http://www.istat.it/en/about-istat/quality | ||||||||||||
11.2 Quality management - assessment | ||||||||||||
The Information System provides 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 PRODCOM form. The System calculates both the totals and the unit price. The PRODCOM questionnaire can not be completed successfully before all errors inside the questionnaire, detected by the checking program, to be corrected. | ||||||||||||
12. Relevance | ||||||||||||
12.1 Relevance - User Needs | ||||||||||||
The main users of PRODCOM data can be presented in different groups, namely: a) EXTERNAL/ INTERNATIONAL (OUTSIDE NSI): Eurostat; b) EXTERNAL/ NATIONAL (OUTSIDE NSI), like:
c) INTERNAL (INSIDE NSI): Environmental statistics, National accounts, STS, Agriculture statistics, Business Register | ||||||||||||
12.2 Relevance - User Satisfaction | ||||||||||||
No user satisfaction survey has been done for Prodcom. | ||||||||||||
12.3 Completeness | ||||||||||||
In Italy are inquired all codes from of the Procom list. | ||||||||||||
13. Accuracy | ||||||||||||
13.1 Accuracy - overall | ||||||||||||
For 2015, the response rate was of 44% of all enterprises surveyed. The main causes of non-response are: misclassification of economic activity (activities outside of sections B and C, Nace Rev.2), idle activity, transformation (merger or separation), stop of activity, impossibility to contact the company. After checking if the company has stopped or suspended its activity during the reference year, the non-respondenses were estimated using the previous years data, by applying the annual variation of the main STS indicators. In case of partial responses, that concerns basically missing volume data, estimates for missing volumes are done by using the median unit price from the other respondent companies. | ||||||||||||
13.2 Sampling error | ||||||||||||
A probabilistic sample has been designed. It involves a sample of small industrial enterprises (from 3 to 19 employees) and the totality of the local units that belong to medium and large companies (20 employees and over). The sampling method is based on an equiprobabilistic selection in each stratum, obtained by the combination of two variables: class of employees and class of economic activity. The variables used to evaluate the sample size in each stratum are: turnover, added-value and number of employees. The size is obtained by applying the Bethel method. In order to ensure adequate coverage, productive local units belonging to companies having main activities outside the industrial sectors covered by Prodcom are included in the survey as well. The required coverage levels for Prodcom survey is achieved by means of a grossing up technique. The estimation technique currently adopted makes use of a calibration method based on the auxiliary variables number of enterprises and number of employees belonging to industrial companies included in the target population.The sampling CV (coefficients of variation) of each statistic (added-value and number of employees) is estimated by the ratio between square root of sampling variance estimate and parameter estimate in each estimation domain. Coefficient of Variation = 0.05 for each statistic (added-value and number of employees) (for the formula see http://ec.europa.eu/eurostat/documents/64157/4373903/02-ESS-Quality-and-performance-Indicators-2014.pdf/5c996003-b770-4a7c-9c2f-bf733e6b1f31). This value is set in the phase of the sampling selection using the Bethel procedure
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13.3 Non-sampling error | ||||||||||||
Coverage error: ESS standard over coverage rate: Main unweighted indicators (for the formula see http://ec.europa.eu/eurostat/documents/64157/4373903/02-ESS-Quality-and-performance-Indicators-2014.pdf/5c996003-b770-4a7c-9c2f-bf733e6b1f31) edition 31/12/2015 = 2,46% alpha= 1.00 The quality actions to control unit nonresponse are:
Editing and imputation procedures are used to correct for item nonresponse and measurement errors
ESS standard unit nonresponse rate: Main unweighted indicators (for the formula see http://ec.europa.eu/eurostat/documents/64157/4373903/02-ESS-Quality-and-performance-Indicators-2014.pdf/5c996003-b770-4a7c-9c2f-bf733e6b1f31) edition 31/12/2015 = 56,83% alpha= 1.00 | ||||||||||||
14. Timeliness and punctuality | ||||||||||||
14.1 Timeliness | ||||||||||||
Data are disseminated at national level Yearly
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14.2 Punctuality | ||||||||||||
In Italy, the Prodcom provisional data are usually published without delay in relation to the scheduled date. Information is available at http://www.istat.it/it/archivio/12026. | ||||||||||||
15. Coherence and comparability | ||||||||||||
15.1 Comparability - geographical | ||||||||||||
not applicable | ||||||||||||
15.2 Comparability - over time | ||||||||||||
Length of comparable time series:
An extensive revision of NACE in 2007 has resulted in changes to PRODCOM estimates for the 2008 survey onwards. Every 5th year, there is a revision of the HS (Harmonized System) which will lead also to more significant changes to CN and Prodcom. The latest major revision was in 2012. Revision in NACE will also affect Prodcom. Prodcom data from 1995 to 2007, based on NACE Rev.1.1, have been backcasted to NACE Rev.2 by Eurostat. | ||||||||||||
15.3 Coherence - cross domain | ||||||||||||
For each domain is cheched the coherence with previous data. No control coherece with other statistical surveys for different nature and/or frequencies, for different approaches, classifications and methodological standards. | ||||||||||||
15.4 Coherence - internal | ||||||||||||
Growth rate in the region of acceptance. | ||||||||||||
16. Cost and Burden | ||||||||||||
Average company's time to fill in the survey: 2.8 hrs. | ||||||||||||
17. Data revision | ||||||||||||
17.1 Data revision - policy | ||||||||||||
Data released at the beginning of July( T+6m) are preliminary, and revisions are disseminated after 12 months ( T+12m) . After 12 months the data can be considered as final, unless huge mistakes in time series are detected in data submitted to Eurostat. | ||||||||||||
17.2 Data revision - practice | ||||||||||||
When submitting the Prodcom data for a new year to Eurostat, Statistics Italy will submit also the revised versions of previous years, when is relevant. Typically, the previous years have significant revisions to mandate a revised submission. As difference, the mean is (-8,293,000) and weighted mean with the last sold value is (2,327). | ||||||||||||
18. Statistical processing | ||||||||||||
18.1 Source data | ||||||||||||
The survey sample is selected from Business Register ASIA. PRODCOM estimates cover Italy’s registered businesses for over 90% (we made census for enterprises with 20 or more employees, which totals over 30.000 units). For the enterprises with less than 20 employees we made a sample of about 10.000 units (while the population in Italy is over 175.000). VAT and turnover is classified to NACE divisions 07-33. Businesses are selected by employment size and industry classification, using a stratified random sample. Additional constraints are built into the sample design so to decrese the form filling response burden on smaller businesses. The number to be selected has been calculated to minimise the burden of sampling, without compromising the calculation of final estimates. The sampling method is based on an equiprobabilistic selection in each stratum obtained by the combination of two variables: class of employees and class of economic activity. The variables used to evaluate the sample size in each stratum are: turnover and number of employees. The determination of numerosity sample and its allocation between the stratum occurred requiring that the expected error in the estimated total (error expressed in terms of coefficient of variation) of the variables considered were less than 5 percent in each domain of study represented by the class of economic activity. The allocation of the sample in the layers was achieved by adopting a multivariate allocation algorithm proposed by Bethel, 7 criterion, which is a generalization of the method of Neymann for only one variable, and that allows to minimize the sample size so as to satisfy the constraints precision of the estimates for each of the variables considered of interest, relative to the domain estimation. | ||||||||||||
18.2 Frequency of data collection | ||||||||||||
On a yearly basis. | ||||||||||||
18.3 Data collection | ||||||||||||
Data collection:
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18.4 Data validation | ||||||||||||
Data are validated to the following actions:
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18.5 Data compilation | ||||||||||||
Steps of data compilation in Prodcom statistics of Italy:
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18.6 Adjustment | ||||||||||||
Not applicable for Prodcom data. | ||||||||||||
19. Comment | ||||||||||||
No comment. |