1. Contact | ||||||||||||||||||||||||||||||||
1.1 Contact organisation | ||||||||||||||||||||||||||||||||
National Institute of Statistics (Istat) | ||||||||||||||||||||||||||||||||
1.2 Contact organisation unit | ||||||||||||||||||||||||||||||||
Directorate for Business Statistics (DCSE) Division for Statistics on Production and Foreign Trade (SEB) | ||||||||||||||||||||||||||||||||
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 | ||||||||||||||||||||||||||||||||
2022-06-15 | ||||||||||||||||||||||||||||||||
2.2 Metadata last posted | ||||||||||||||||||||||||||||||||
2022-06-15 | ||||||||||||||||||||||||||||||||
2.3 Metadata last update | ||||||||||||||||||||||||||||||||
2022-06-15 | ||||||||||||||||||||||||||||||||
3. Statistical presentation | ||||||||||||||||||||||||||||||||
3.1 Data description | ||||||||||||||||||||||||||||||||
Producer Price Index measures the average producer price development of industrial products sold on domestic and non-domestic market, at the initial stage of commercialization. The purpose of this index is to provide information on price dynamics over the business cycle. | ||||||||||||||||||||||||||||||||
3.2 Classification system | ||||||||||||||||||||||||||||||||
NACE Rev. 2. | ||||||||||||||||||||||||||||||||
3.3 Coverage - sector | ||||||||||||||||||||||||||||||||
Activities covered: NACE Rev. 2 Sections B to E36 are covered by the output prices data. Indexes are not required for the following Groups or Classes of NACE Rev. 2: 07.21, 24.46, 25.4, 30.1, 30.3, 30.4 and 38.3. | ||||||||||||||||||||||||||||||||
3.4 Statistical concepts and definitions | ||||||||||||||||||||||||||||||||
List and definition of variables: the list of products is made up of about one-thousand items (PRODCOM). | ||||||||||||||||||||||||||||||||
3.5 Statistical unit | ||||||||||||||||||||||||||||||||
Reporting unit: Industrial enterprise. | ||||||||||||||||||||||||||||||||
3.6 Statistical population | ||||||||||||||||||||||||||||||||
Target population corresponds to all enterprises of Section B to E36 of NACE.Rev2. | ||||||||||||||||||||||||||||||||
3.7 Reference area | ||||||||||||||||||||||||||||||||
Whole national territory | ||||||||||||||||||||||||||||||||
3.8 Coverage - Time | ||||||||||||||||||||||||||||||||
Date of first use as a source is 1981. Data are disseminated according to the NACE 2 classification at four digit level since January 2000 | ||||||||||||||||||||||||||||||||
3.9 Base period | ||||||||||||||||||||||||||||||||
The base period is the month of December of the preceding year. The reference base is got by chain-linking. Since January 2018 the reference base is the year 2015. Before January 2018, all indices have been re-scaled to the reference base 2015 | ||||||||||||||||||||||||||||||||
4. Unit of measure | ||||||||||||||||||||||||||||||||
Indices | ||||||||||||||||||||||||||||||||
5. Reference Period | ||||||||||||||||||||||||||||||||
Month | ||||||||||||||||||||||||||||||||
6. Institutional Mandate | ||||||||||||||||||||||||||||||||
6.1 Institutional Mandate - legal acts and other agreements | ||||||||||||||||||||||||||||||||
Legal basis: National level: this is one of the compulsory surveys fixed every year by a Decree of the President of the Republic (D.P.R.). European level: Regulation (EU) 2019/2152 of the European Parliament and of the Council of 27 November 2019 on European business statistics, repealing 10 legal acts in the field of business statistics; Commission Implementing Regulation 2020/1197 laying down technical specifications and arrangements pursuant to Regulation (EU) 2019/2152 (General Implementing Act); Council Regulation No 1165/1998 Council Regulation No 1165/1998 of 19 May 1998 Introducing short-term statistics at European level. Obligation on units to provide data: surveys are mandatory. Penalties are foreseen for non-response. Planned changes in legal basis, obligation to respond and frame used: None | ||||||||||||||||||||||||||||||||
6.2 Institutional Mandate - data sharing | ||||||||||||||||||||||||||||||||
This indicator is part of official data shown at page https://www.istat.it/nsdp/ and correspond to the data described on the International Monetary Fund's Dissemination Standards Bulletin Board (DSBB). Explanation of the DSBB and the statistical standards to which Italy has committed are published on http://dsbb.imf.org/ | ||||||||||||||||||||||||||||||||
7. Confidentiality | ||||||||||||||||||||||||||||||||
7.1 Confidentiality - policy | ||||||||||||||||||||||||||||||||
Several national legal acts guarantee the confidentiality of data requested for statistical purposes. According to art. 9, paragraph 1 of the Legislative Decree n. 322 of 1989, personal data can only be disseminated in aggregate form, in order to make it impossible to identify individuals. The Personal Data Protection Code ¿ introduced by the Legislative Decree no. 196 of 30 June 2003 ¿ and Legislative Decree no. 101 of 10 September 2018 (General Data Protection Regulation) provide special rules concerning the processing of personal data for statistical purposes within the National Statistical System (Sistan). Further, in order to make statistical confidentiality and protection of personal data effective, Istat is currently taking appropriate organisational, logistical, methodological and statistical measures in accordance with internationally established standards. | ||||||||||||||||||||||||||||||||
7.2 Confidentiality - data treatment | ||||||||||||||||||||||||||||||||
Survey elementary data are treated as confidential. Aggregated data are disseminated in I.Stat | ||||||||||||||||||||||||||||||||
8. Release policy | ||||||||||||||||||||||||||||||||
8.1 Release calendar | ||||||||||||||||||||||||||||||||
Every year, in December Istat publishes a release calendar providing the precise release dates for the coming year. The calendar is distributed to the press and is available free of charge to interested parties | ||||||||||||||||||||||||||||||||
8.2 Release calendar access | ||||||||||||||||||||||||||||||||
The release calendar is disseminated on ISTAT's website: Release calendar | ||||||||||||||||||||||||||||||||
8.3 Release policy - user access | ||||||||||||||||||||||||||||||||
Data are released simultaneously to all interested parties by issuing the press release "Prezzi alla produzione dell¿industria e delle costruzioni" or "Prezzi alla produzione dell¿industria, delle costruzioni e dei servizi" Eurostat receive embargoed data in advance of its publishing date. No pre-release access. The press release (Italian version and short English version) is subsequently posted on the Istat¿s website (https://www.istat.it/en/prices). | ||||||||||||||||||||||||||||||||
9. Frequency of dissemination | ||||||||||||||||||||||||||||||||
Monthly | ||||||||||||||||||||||||||||||||
10. Accessibility and clarity | ||||||||||||||||||||||||||||||||
10.1 Dissemination format - News release | ||||||||||||||||||||||||||||||||
A monthly press release "Prezzi alla produzione dell¿industria delle e costruzioni¿ and a quartely press release "Prezzi alla produzione dell¿industria, delle costruzioni e dei servizi" including breakdown for domestic, non-domestic and total market (Prices/Archive). | ||||||||||||||||||||||||||||||||
10.2 Dissemination format - Publications | ||||||||||||||||||||||||||||||||
Indices are published in the ¿Annuario Statistico Italiano¿ (ASI) -Italian Statistical Yearbook ¿ Chapter 16 Annuario Statistico Italiano/Prezzi | ||||||||||||||||||||||||||||||||
10.3 Dissemination format - online database | ||||||||||||||||||||||||||||||||
Data are disseminated in I.Stat database (I.Stat), theme Prices, sub-theme Production prices, dataset Producer price index for industrial products - monthly data. | ||||||||||||||||||||||||||||||||
10.4 Dissemination format - microdata access | ||||||||||||||||||||||||||||||||
Before data dissemination, validated microdata are stored in the repository of the Institute, ARMIDA. | ||||||||||||||||||||||||||||||||
10.5 Dissemination format - other | ||||||||||||||||||||||||||||||||
This index is also one of the 'Principal European Economic Indicators (PEEIs) https://ec.europa.eu/eurostat/web/euro-indicators The series of the updated final indices are also published on Istat¿s web database Rivaluta (in which price indices ¿ consumer prices, producer prices and construction costs indices are stored). This software is aimed to certificate price indices rates of change over a period of time selected by users | ||||||||||||||||||||||||||||||||
10.6 Documentation on methodology | ||||||||||||||||||||||||||||||||
A short description of the methodology and characteristics of the survey is contained in the technical explanatory note attached to the press release updated regularly. | ||||||||||||||||||||||||||||||||
10.7 Quality management - documentation | ||||||||||||||||||||||||||||||||
More information about procedures applied for quality management and quality assessment in the document "Quality Guidelines For Statistical Processes" - December 2012 | ||||||||||||||||||||||||||||||||
11. Quality management | ||||||||||||||||||||||||||||||||
11.1 Quality assurance | ||||||||||||||||||||||||||||||||
The quality assurance framework is based on the contents of the document "Quality Guidelines For Statistical Processes" ¿ Istat - December 2012 (Quality guidelines for statistical process.) Istat reference framework for quality policies relies on the European Statistics Code of Practice adopted in 2005 (last revised in 2017), on Eurostat Quality Definition and on the recommendations of the LEG on Quality. The Data Quality Assessment Framework, developed by the International Monetary Fund, also represents an important reference. Following the principles of the European Statistics Code of Practice, Italy has adopted the Italian Code of Official Statistics in order to promote quality improvements of the statistics produced by the Italian National Statistical System. (Directive No 12/COMSTAT in Italian Official Journal No. 23, General Series of 29 January 2022). In accordance with Eurostat Quality Definition, the requirements of statistical products are:
A description of methodology and sources used in preparing statistics is also contained in the Information SIqual/ Quarterly survey on producer prices | ||||||||||||||||||||||||||||||||
11.2 Quality management - assessment | ||||||||||||||||||||||||||||||||
In 2010 this survey was submitted to an audit on quality in a testing phase | ||||||||||||||||||||||||||||||||
12. Relevance | ||||||||||||||||||||||||||||||||
12.1 Relevance - User Needs | ||||||||||||||||||||||||||||||||
Main users of producer price index are:
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12.2 Relevance - User Satisfaction | ||||||||||||||||||||||||||||||||
Not available | ||||||||||||||||||||||||||||||||
12.3 Completeness | ||||||||||||||||||||||||||||||||
Eurostat's requirements in terms of time series are fulfilled | ||||||||||||||||||||||||||||||||
13. Accuracy | ||||||||||||||||||||||||||||||||
13.1 Accuracy - overall | ||||||||||||||||||||||||||||||||
The samples are designed with the cut-off method and therefore sampling errors cannot be measured. Non-sampling errors are reduced or eliminated in the collection phase both using an electronic questionnaire that helps debugging and aiming at an increase of the response rate of enterprises | ||||||||||||||||||||||||||||||||
13.2 Sampling error | ||||||||||||||||||||||||||||||||
Not applicable, it is not possible to compute sampling errors because a non-probability sampling method (cut-off) is used | ||||||||||||||||||||||||||||||||
13.3 Non-sampling error | ||||||||||||||||||||||||||||||||
The response rate of first estimate is about 96% for Domestic market and 94% for Non Domestic market | ||||||||||||||||||||||||||||||||
14. Timeliness and punctuality | ||||||||||||||||||||||||||||||||
14.1 Timeliness | ||||||||||||||||||||||||||||||||
The deadline for the data transmission is 30 days after the end of the reference period | ||||||||||||||||||||||||||||||||
14.2 Punctuality | ||||||||||||||||||||||||||||||||
All releases delivered according to the timetable | ||||||||||||||||||||||||||||||||
15. Coherence and comparability | ||||||||||||||||||||||||||||||||
15.1 Comparability - geographical | ||||||||||||||||||||||||||||||||
Not applicable, only national level. | ||||||||||||||||||||||||||||||||
15.2 Comparability - over time | ||||||||||||||||||||||||||||||||
Time series are available on I.Stat since January 2000 (I.Stat). | ||||||||||||||||||||||||||||||||
15.3 Coherence - cross domain | ||||||||||||||||||||||||||||||||
Not available | ||||||||||||||||||||||||||||||||
15.4 Coherence - internal | ||||||||||||||||||||||||||||||||
PPI is a system of five variables, algebraically coherent; three of them are surveyed (domestic market, non-domestic market euro zone, non-domestic market non euro zone). The other two variables are compiled as weighted arithmetic mean of the surveyed ones. In particular, total non-domestic market is a weighted arithmetic mean of euro and non- euro zone; the overall variable is a weighted mean of domestic market and total non-domestic market. Further, each variable is computed as weighted average mean (Laspeyres type index) of sub-indexes, therefore internal coherence is straightforward. Moreover the coherence is achieved annually updating weights (indexes are annually chain linked). | ||||||||||||||||||||||||||||||||
16. Cost and Burden | ||||||||||||||||||||||||||||||||
The cost estimate is compiled in terms of total number of hours worked (THW). It is equal to the product of three terms: (total) Annual Working Days (AWD), (total) Hours Worked per Day (HWD), Number of Persons involved in the Survey (NPS).
The burden estimate is compiled in terms of total number of minutes (TNM) taken to fill in the (web) questionnaire. The burden is applied to respondent, i.e. the person who fills in the questionnaire on behalf of the enterprise. To estimate it, two elements have been taken into account. The former distinguishes between beginner and expert respondent, to point out respectively the person who fills in the web questionnaire for the first time and the one who is familiar with filling in the form. The latter, closely concerns the information that have to be monthly provided. On average, by combining these two elements, the time spent to fill in the questionnaire (just the burden) is estimated in terms of total number of minutes between a minimum and a maximum threshold.
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17. Data revision | ||||||||||||||||||||||||||||||||
17.1 Data revision - policy | ||||||||||||||||||||||||||||||||
Monthly, provisional and final data are disseminated as indices. Data concerning the current month are provisional while data referring to the previous months are final. | ||||||||||||||||||||||||||||||||
17.2 Data revision - practice | ||||||||||||||||||||||||||||||||
At present time, Producer price indices are not revised and seasonal adjusted. Data are firstly released as ¿provisional¿ (30 days after the end of the reference period) and subsequently as ¿final¿ (60 days after the end of the reference period). The distance between provisional and final data allows to increase the response rate, allowing revisions too (if any).The Mean Absolute Revision (MAR), Mean Revision (MR) and RMAR (Relative Mean Absolute Revision) are compiled for totals (and MIGs breakdown). These indicators refer to 36 monthly data from 2019 to 2021; indices are released in the reference base 2015=100. The indicators refer to the Domestic market.
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18. Statistical processing | ||||||||||||||||||||||||||||||||
18.1 Source data | ||||||||||||||||||||||||||||||||
Data are collected through a statistical survey. The PRODCOM annual survey and the annual Survey on Enterprises accounts are used as frame. The survey is conducted on the basis of a sample (based on a non-probabilistic design). The sample is drawn by quotas, calculated in order to guarantee a sufficient coverage in terms of turnover. The sample of products and the list of enterprises are updated every year. | ||||||||||||||||||||||||||||||||
18.2 Frequency of data collection | ||||||||||||||||||||||||||||||||
Monthly | ||||||||||||||||||||||||||||||||
18.3 Data collection | ||||||||||||||||||||||||||||||||
Self-administered data collection via electronic transmission, data are collected through a web portal called Portale Imprese https://imprese.istat.it/ Respondents need to login for insert data in the web questionnaire | ||||||||||||||||||||||||||||||||
18.4 Data validation | ||||||||||||||||||||||||||||||||
Data validation is carried out on:
non-response data (prices) are estimated | ||||||||||||||||||||||||||||||||
18.5 Data compilation | ||||||||||||||||||||||||||||||||
PPI are a system of Laspeyres chain-linked type indices Indices compilation is carried out through three main steps:
Adjustments for quality changes: when a price variation is due to a change in price determining characteristics, a quality change occurs; the overlap algorithm is applied to link old and new price.
New price quotations are introduced only when the index base is updated Seasonal items: the most recent price collected is held constant until new prices are reported for the same season. Method of weighting and chaining: The weights system is defined at national level. For the higher aggregation level (from the 4-digit level upwards) the weighting coefficients are determined on the basis of (billed) domestic sales of own-produced manufacturing products according to the Survey on ¿Enterprises Accounting Systems¿ (the main annual SBS survey). For lower levels, the PRODCOM survey is used. Seasonally adjusted indices are planned to be added to the raw indices | ||||||||||||||||||||||||||||||||
18.6 Adjustment | ||||||||||||||||||||||||||||||||
Seasonally adjusted indices are not yet calculated | ||||||||||||||||||||||||||||||||
19. Comment | ||||||||||||||||||||||||||||||||
None |