Producer Price Survey for Manufacturing 2008
Philippines, 2008 - 2009
Created on
Apr 25, 2019
Last modified
Apr 25, 2019
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Identification
Survey ID Number
PHL_2008_PPS_v01_M
Title
Producer Price Survey for Manufacturing 2008
Country
| Name | Country code |
|---|---|
| Philippines | PHL |
Study type
Enterprise Survey [en/oth]
Series Information
In 1980, studies on the generation of the producer price index (PPI) started when the Index of Physical Volume of Production series being generated by the then Central Bank of the Philippines (now Bangko Sentral ng Pilipinas) was discontinued. This came about because of the transfer of responsibility of operations and processing of the Monthly Survey of Establishments (MSE) for manufacturing from the Central Bank to the National Census and Statistics Office (now the National Statistics Office- NSO). earliest version of the MISSI is entitled as SKEM (Survey of Key Enterprises in Manufacturing), which had its inception in 1981 as a project of the National Accounts Staff of National Economic and Development Authority (NEDA). Initially, indicators/indices generated by the SKEM had 1981 as the base period. In 1986, the responsibility for the SKEM was transferred to the National Census and Statistics Office (now the National Statistics Office-NSO).
Work on the original PPI started with 1978 as the base year and was later revised to 1985. The source of data for the PPI was the then Monthly Survey of Establishments (MSE) for Manufacturing. The MSE has a rider questionnaire, which asked for data on production of major products of the sample establishmnets. However, the PPI were never released as official statistics. It was later felt that the components of the PPI were no longer reflective of the prevailing production structure of the manufacturing sector that the PPI operations were halted.
In 1992-1993, the compilation of the PPI with 1992 as the base year was revived in a project "Improvement of the Producer Price Index of Selected Manufactured Products" through the Grants-in-Aid Program of the National Statistical Coordination Board (NSCB). The NSO with guidance from the Technical Committee on Price Statistics of NSCB worked for further improvements to the PPI to make it more reflective of the actual situation of the manufacturing sector. The conduct of the Producer Price Survey started in 1992 as the source of data for the PPI. Starting with this new base year, the PPI was officially released simultaneous with the SKEM indicators. (The SKEM was later renamed to MISSI).
In 2001, the NSO released the rebased series of the PPI with 1994 as the new base year. The 1992 - based series continued on until December 2001 and was discontinued the year after. The 1994-based series had January 1998 as its earliest series.
In 2005, Rebasing of PPI series to base year 2000 started and it was in August 2007 when this new base period was released in parrallel with the 1994-based series. The 2000-based series had January 2001 as its earliest series. Beginning January 2008, the 1994-based series was discontinued.
Work on the original PPI started with 1978 as the base year and was later revised to 1985. The source of data for the PPI was the then Monthly Survey of Establishments (MSE) for Manufacturing. The MSE has a rider questionnaire, which asked for data on production of major products of the sample establishmnets. However, the PPI were never released as official statistics. It was later felt that the components of the PPI were no longer reflective of the prevailing production structure of the manufacturing sector that the PPI operations were halted.
In 1992-1993, the compilation of the PPI with 1992 as the base year was revived in a project "Improvement of the Producer Price Index of Selected Manufactured Products" through the Grants-in-Aid Program of the National Statistical Coordination Board (NSCB). The NSO with guidance from the Technical Committee on Price Statistics of NSCB worked for further improvements to the PPI to make it more reflective of the actual situation of the manufacturing sector. The conduct of the Producer Price Survey started in 1992 as the source of data for the PPI. Starting with this new base year, the PPI was officially released simultaneous with the SKEM indicators. (The SKEM was later renamed to MISSI).
In 2001, the NSO released the rebased series of the PPI with 1994 as the new base year. The 1992 - based series continued on until December 2001 and was discontinued the year after. The 1994-based series had January 1998 as its earliest series.
In 2005, Rebasing of PPI series to base year 2000 started and it was in August 2007 when this new base period was released in parrallel with the 1994-based series. The 2000-based series had January 2001 as its earliest series. Beginning January 2008, the 1994-based series was discontinued.
Abstract
The National Statistics Office generates various establishment based price indices and one of these is the Producers Price Index.
The 2008 PPI (2000=100) is generated from the results of the Producer Price Survey conducted monthly by the NSO. This is done through the collection of actual producer prices from sample establishments nationwide. The PPS uses a shuttle type questionnaire which provides the respondent establishments with a running account of all monthly responses for the year. For 2008, the survey covered 595 sample products produced by 309 manufacturing establishments.
The Producer Price Index (PPI) for Manufacturing is a composite figure of producers prices of representative commodities included in the market basket. The PPI serves various purposes, the most important of which are the following:
a. measures monthly or yearly changes in the producers prices of key commodities in the manufacturing sector
b. serves as deflator to Value of Production Index (VAPI) in the estimation of Volume of Production Index (VOPI)
c. serves as deflator in the estimation of manufacturing production in real terms (at constant prices) in the system of national accounts.
The PPI is computed using the Paasche-type method of index computation . As such, the weights are continously revised upon availability of the latest data from the annual survey or census. In the case of 2008 PPI, the weights are taken from the 2005 Annual Survey of Philippine Business and Industry (ASPBI). The revision of weights , are however instituted at the beginning of each year and are used for the entire year.
The 2008 PPI (2000=100) is generated from the results of the Producer Price Survey conducted monthly by the NSO. This is done through the collection of actual producer prices from sample establishments nationwide. The PPS uses a shuttle type questionnaire which provides the respondent establishments with a running account of all monthly responses for the year. For 2008, the survey covered 595 sample products produced by 309 manufacturing establishments.
The Producer Price Index (PPI) for Manufacturing is a composite figure of producers prices of representative commodities included in the market basket. The PPI serves various purposes, the most important of which are the following:
a. measures monthly or yearly changes in the producers prices of key commodities in the manufacturing sector
b. serves as deflator to Value of Production Index (VAPI) in the estimation of Volume of Production Index (VOPI)
c. serves as deflator in the estimation of manufacturing production in real terms (at constant prices) in the system of national accounts.
The PPI is computed using the Paasche-type method of index computation . As such, the weights are continously revised upon availability of the latest data from the annual survey or census. In the case of 2008 PPI, the weights are taken from the 2005 Annual Survey of Philippine Business and Industry (ASPBI). The revision of weights , are however instituted at the beginning of each year and are used for the entire year.
Kind of Data
Sample survey data [ssd]
Unit of Analysis
The unit of analysis for this survey is the establishment. An establishment is defined as an economic unit under a single ownership or control, i.e., under a single legal entity, engaged in one or predominantly one kind of economic activity at a single fixed location.
Version
Version Description
v 1.0: Edited dataset, for public use
Version Date
2009-10
Scope
Notes
The 2008 PPS covers manufacturing establishments with average total employment of 20 and over. The following items of data are gathered from the respondent establishment:
I. Name of product/s
II. Brand Name
III.Product Specification
IV. Unit of Measure
V. Producer price/s of selected products
I. Name of product/s
II. Brand Name
III.Product Specification
IV. Unit of Measure
V. Producer price/s of selected products
Coverage
Geographic Coverage
The geographic domain is the whole country.
Universe
Manufacturing establishments with total employment of 20 and over
Producers and sponsors
Primary investigators
| Name | Affiliation |
|---|---|
| National Statistics Office | National Economic and Development Authority |
Funding Agency/Sponsor
| Name | Abbreviation |
|---|---|
| National Statistics Office | NSO |
Other Identifications/Acknowledgments
| Name | Role |
|---|---|
| National Statistical Coordination Board | Review and clearance |
Sampling
Sampling Procedure
The 2008 PPS is a non-probability sampling survey of the manufacturing sector. Sample establishments and commodities were selected using the following criteria:
a. the commodity has a relatively high market share
b. the commodity was available in the market in 2000, this being the base year
c. the commodity is being produced currently, and
d. the market share of the commodity has been stable for the last 3 years
In the same manner, criteria were also set for the selection of establishments, as follows:
a. establishment has an ATE of 50 and over
b. establishment has relatively high concentration ratio
c. establishment is good respondent in past and current surveys of NSO; that is, it submits prompt reports and provides quality data
d. preferably, the establishment is a sample of the Monthly Integrated Survey of Selected Industries (MISSI).
The 2008 PPS utilizes the 3-digit and selected 4-digit amended Philippine Standard Industrial Classification (PSIC) as its industry domain which is patterned after ISIC version 3.
Thus, there are 20 major sectors with 10 further categorized into sub-sectors or a total of 37 sub-sectors for the 2008 MISSI. These are:
1. Food Manufacturing
1.1. Processed meat and fish
1.2. Processed fruits and vegetables
1.3. Vegetable and animal oils and fats
1.4. Milk and dairy products
1.5. Grain mills products
1.6. Animal feeds
1.7. Bakery products
1.8. Milled and refined sugar
1.9. Coconut products
1.10. Miscellaneous foods
2. Beverages
3. Tobacco products
4. Textiles
4.1. Textile products
4.2. Cordage, rope and twine
5. Footwear and wearing apparel
6. Leather products
7. Wood and wood products
7.1. Planning and sawmill
7.2. Veneer and plywood
7.3. Other wood products
8. Paper and paper products
9. Publishing and printing
10. Petroleum products
10.1. Refined petroleum products
10.2. Coke and other fuel products
11. Chemical products
11.1. Basic Chemicals and industrial gases
11.2. Fertilizers
11.3. Paints
11.4. Drugs and medicines
11.5. Cosmetics and toilet preparations
11.6. Miscellaneous Chemicals
12. Rubber and plastic products
12.1. Rubber products
12.2. Plastic products
13. Non-metallic mineral products
13.1. Glass and glass products
13.2. Cement
13.3. Miscellaneous non-metallic mineral products
14. basic metals
14.1. Iron and steel
14.2. Non-ferrous metals
15. Fabricated metal products
16. Machinery except electrical
16.1. Office,accounting and computing machinery
16.2. Machinery and equipment n.e.c.
17. Electrical machinery
17.1. Electrical appliances
17.2. Wires and wirings
17.3. Batteries
17.4. Lamps and fixtures
17.5. Microcircuits
18. Transport equipment
19. Furnitures and fixtures
20. Miscellaneous Manufactures
Indicators generated from 2008 PPS (2000=100) are the following:
1. Producer Price Index (PPI), yearly and monthly growth rates
Imputation methods used for unit and item non-response are as follows:
1. Historical imputation without trend adjustment, or the use of the latest available data of the establishment
2. Imputed values are revised upon receipt of actual data for inclusion in the revised indices
a. the commodity has a relatively high market share
b. the commodity was available in the market in 2000, this being the base year
c. the commodity is being produced currently, and
d. the market share of the commodity has been stable for the last 3 years
In the same manner, criteria were also set for the selection of establishments, as follows:
a. establishment has an ATE of 50 and over
b. establishment has relatively high concentration ratio
c. establishment is good respondent in past and current surveys of NSO; that is, it submits prompt reports and provides quality data
d. preferably, the establishment is a sample of the Monthly Integrated Survey of Selected Industries (MISSI).
The 2008 PPS utilizes the 3-digit and selected 4-digit amended Philippine Standard Industrial Classification (PSIC) as its industry domain which is patterned after ISIC version 3.
Thus, there are 20 major sectors with 10 further categorized into sub-sectors or a total of 37 sub-sectors for the 2008 MISSI. These are:
1. Food Manufacturing
1.1. Processed meat and fish
1.2. Processed fruits and vegetables
1.3. Vegetable and animal oils and fats
1.4. Milk and dairy products
1.5. Grain mills products
1.6. Animal feeds
1.7. Bakery products
1.8. Milled and refined sugar
1.9. Coconut products
1.10. Miscellaneous foods
2. Beverages
3. Tobacco products
4. Textiles
4.1. Textile products
4.2. Cordage, rope and twine
5. Footwear and wearing apparel
6. Leather products
7. Wood and wood products
7.1. Planning and sawmill
7.2. Veneer and plywood
7.3. Other wood products
8. Paper and paper products
9. Publishing and printing
10. Petroleum products
10.1. Refined petroleum products
10.2. Coke and other fuel products
11. Chemical products
11.1. Basic Chemicals and industrial gases
11.2. Fertilizers
11.3. Paints
11.4. Drugs and medicines
11.5. Cosmetics and toilet preparations
11.6. Miscellaneous Chemicals
12. Rubber and plastic products
12.1. Rubber products
12.2. Plastic products
13. Non-metallic mineral products
13.1. Glass and glass products
13.2. Cement
13.3. Miscellaneous non-metallic mineral products
14. basic metals
14.1. Iron and steel
14.2. Non-ferrous metals
15. Fabricated metal products
16. Machinery except electrical
16.1. Office,accounting and computing machinery
16.2. Machinery and equipment n.e.c.
17. Electrical machinery
17.1. Electrical appliances
17.2. Wires and wirings
17.3. Batteries
17.4. Lamps and fixtures
17.5. Microcircuits
18. Transport equipment
19. Furnitures and fixtures
20. Miscellaneous Manufactures
Indicators generated from 2008 PPS (2000=100) are the following:
1. Producer Price Index (PPI), yearly and monthly growth rates
Imputation methods used for unit and item non-response are as follows:
1. Historical imputation without trend adjustment, or the use of the latest available data of the establishment
2. Imputed values are revised upon receipt of actual data for inclusion in the revised indices
Response Rate
The average monthly response rate is 88.84%, 35 days (preliminary tabulation) after the reference month and 95 % for the final table.
Weighting
Not applicable
Data Collection
Dates of Data Collection
| Start | End | Cycle |
|---|---|---|
| 2008-02-15 | 2008-02-29 | January round |
| 2008-03-16 | 2008-03-31 | February round |
| 2008-04-15 | 2008-04-30 | March round |
| 2008-05-15 | 2008-05-31 | April round |
| 2008-06-16 | 2008-06-30 | May round |
| 2008-07-16 | 2008-07-31 | June round |
| 2008-08-15 | 2008-08-31 | July round |
| 2008-09-16 | 2008-09-30 | August round |
| 2008-10-16 | 2008-10-31 | September round |
| 2008-11-16 | 2008-11-30 | October round |
| 2008-12-16 | 2008-12-29 | November round |
| 2009-01-16 | 2009-01-31 | December round |
Data Collection Mode
Self Administered Questionnaire and/or Face-to-face interview
Supervision
The distribution and collection of questionnaires is under the supervision of the Provincial and Regional Offices.
Data Collection Notes
The field offices distribute the questionnaires at the beginning of the year and collects the data on a monthly basis. Collection of PPS questionnaires is done every 15th day to 30th day after each reference month.
Data Collectors
| Name | Abbreviation |
|---|---|
| National Statistics Office | NSO |
Questionnaires
Questionnaires
The Producer Price Survey utilizes a shuttle type questionnaire. This approach reduces cost and enhances consistency and accuracy in reporting since the respondent establishment is provided with a running account of all monthly responses for the year.
Data Processing
Data Editing
It is important to verify the reasonableness and reliability of the prices of products included in the market basket for a given month. Data editing consisted of three stages: field editing, office verification and machine validation.
· Field editing of data was done by the provincial staff upon collection of the accomplished questionnaires from the establishments. The objective is to check for completeness and consistency of entries in the questionnaires. Any inconsistent or missing data was corrected at this stage as this can be immediately verified from the respondents.
· Office verification was done by provincial office staff upon receipt of the accomplished questionnaires from the field men. In some instances, callback to the establishments in the form of phone call or email to verify some inconsistent or missing data is done.
· Desk verification was done by the ISD staff to check the consistency and reasonableness of entries in the accomplished questionnaires. This process also validates the status of establishments such as non-responding and reported closed, cannot be located, transferred, and out of scope. The telephone was extensively utilized to verify information from the establishment's contact person. The Internet was also used to obtain information on the contact address and to research for information on the status of the establishment.
.For unit or item non-response, the following are undertaken:
1. Establishments that stopped operation, temporary out of business (TOB), strike, etc., during the year, historical imputation without trend adjustment or the use of the latest available data of the establishment. This method is appropriate for the reason that the prices of a number of products/commodities do not change very much over a short period of time.
2. Imputed values are revised upon receipt of actual data for inclusion in the revised indices.
· Field editing of data was done by the provincial staff upon collection of the accomplished questionnaires from the establishments. The objective is to check for completeness and consistency of entries in the questionnaires. Any inconsistent or missing data was corrected at this stage as this can be immediately verified from the respondents.
· Office verification was done by provincial office staff upon receipt of the accomplished questionnaires from the field men. In some instances, callback to the establishments in the form of phone call or email to verify some inconsistent or missing data is done.
· Desk verification was done by the ISD staff to check the consistency and reasonableness of entries in the accomplished questionnaires. This process also validates the status of establishments such as non-responding and reported closed, cannot be located, transferred, and out of scope. The telephone was extensively utilized to verify information from the establishment's contact person. The Internet was also used to obtain information on the contact address and to research for information on the status of the establishment.
.For unit or item non-response, the following are undertaken:
1. Establishments that stopped operation, temporary out of business (TOB), strike, etc., during the year, historical imputation without trend adjustment or the use of the latest available data of the establishment. This method is appropriate for the reason that the prices of a number of products/commodities do not change very much over a short period of time.
2. Imputed values are revised upon receipt of actual data for inclusion in the revised indices.
Other Processing
The 2008 PPS utilizes the simple formulas and macros of Microsoft Office Excel in the compilation of 2008 PPI data series. Tabulation is done using the same spreadsheet software. The Paasche method of index computation is applied to generate the Producers Price Index.
Data Appraisal
Estimates of Sampling Error
Not applicable.
Data Appraisal
The quality of the PPI indicators are measured in terms of the following:
> Representativeness of the samples as measured in the CONCENTRATION RATIO- the combined production value of the samples as a percentage to the total industry production value
> Response rate of the survey
> Imputation method used for non-responses
> Representativeness of the samples as measured in the CONCENTRATION RATIO- the combined production value of the samples as a percentage to the total industry production value
> Response rate of the survey
> Imputation method used for non-responses
Access policy
Access authority
| Name | Affiliation | URL | |
|---|---|---|---|
| Industrial Statistics Division (ISD) | National Statistics Office | mfgstaff@census.gov.ph | www.census.gov.ph |
Contacts
| Name | Affiliation | URL | |
|---|---|---|---|
| Director, Industry and Trade Statistics Department (ITSD) | National Statistics Office | E.Deguzman@census.gov.ph | www.census.gov.ph |
Confidentiality
Data collected for the Producers Price Survey are confidential under Section 4 of Commonwealth Act No. 591, which says that the "Data furnished to the Bureau of Census and Statistics (BCS) now known as the National Statistics Office (NSO), by an individual, corporation, partnership, institution or business enterprise shall not be used as evidence in any court or in any public office either as evidence against the individual, corporation, association, partnership, institution, or business enterprise from whom such data emanates; nor shall such data or information be divulged to any person except authorized employees of the BCS acting in the performance of their duties; nor shall such data be published except in the form of summaries or statistical tables in which no reference to an individual, corporation, association, partnership, institution or business enterprise shall appear."
Access conditions
Authorization to use this data in the form of statistical tables is granted only to the client or data user and persons within its organization, if applicable. Under no circumstances shall the client reproduce, distribute, sell or lend the entire data or parts thereof to any other data user apart from himself or that of authorized employees in his organization. The NSO shall hold the data user fully responsible for safeguarding the data from any unauthorized access or use.
Before being granted access to the dataset, all users have to formally agree:
1. To make no copies of any files or portions of files to which s/he is granted access except those authorized by the NSO.
2. Not to use any technique in an attempt to learn the identity of any person, establishment, or sampling unit not identified in the dataset.
3. To hold in strictest confidence the identification of any establishment or individual that may be inadvertently revealed in any documents or discussion, or analysis. Such inadvertent identification revealed in her/his analysis will be immediately reported to the NSO.
Before being granted access to the dataset, all users have to formally agree:
1. To make no copies of any files or portions of files to which s/he is granted access except those authorized by the NSO.
2. Not to use any technique in an attempt to learn the identity of any person, establishment, or sampling unit not identified in the dataset.
3. To hold in strictest confidence the identification of any establishment or individual that may be inadvertently revealed in any documents or discussion, or analysis. Such inadvertent identification revealed in her/his analysis will be immediately reported to the NSO.
Citation requirements
Any report, paper or similar articles, whether published or not, emanating from the use of this data shall give appropriate acknowledgement as suggested herein, “2008 Producers Price Index of Seleted Industries, National Statistics Office, Manila, Philippines”, as the source of basic data. The data user or client is encouraged to provide NSO with a copy of such report, paper or article. It is understood that unless expressly allowed by the client, such report, paper or article shall not be used for any purpose other than monitoring.
Disclaimer and copyrights
Disclaimer
The NSO gives no warranty that the data are free from errors. Hence, the NSO shall not be held responsible for any loss or damage as a result of the client's manipulation or tabulation of the data.
Copyright
The data user acknowledges that any available intellectual property rights, including copyright in the data are owned by the National Statistics Office.
Metadata production
DDI Document ID
DDI_PHL_2008_PPS_v01_M
Producers
| Name | Abbreviation | Affiliation | Role |
|---|---|---|---|
| Ma. Thelma G. Lofranco | TGL | National Statistics Office | Documenter |
| Dulce A. Regala | DAR | National Statistics Office | Reviewer |
| Accelerated Data Program | ADP | International Household Survey Network | Editing for the IHSN Survey Catalog |
Date of Metadata Production
2012-02-24
DDI Document version
Version 01: Adopted from "DDI_PHL_2008_PPS_v2_M" DDI that was done by metadata producers mentioned in "Metadata Production" section.