- Introduction
The Monthly Integrated Survey of Selected Industries (MISSI) is one of the designated statistical activities undertaken by the Philippine Statistics Authority with the objective of providing flash indicators on the performance of growth-oriented industries in the manufacturing sector. The survey gathers monthly data on employment, compensation, production, net sales, inventories and capacity utilization from manufacturing establishments.
The indicators generated from the 2019 MISSI at the 3/4-digit 2009 Philippine Standard Industrial Classification (PSIC) level are Value of Production Index (VaPI), Volume of Production Index (VoPI), Value of Net Sales Index (VaNSI), Volume of Net Sales Index (VoNSI) and capacity utilization of industries. The VoPI and VoNSI, however, are derived indicators utilizing the 2019 Producer Price Index as deflator.
- Method of Index Computation
The MISSI utilizes the Laspeyres-type method of index computation where the weights are based on the value of production from the Census of Philippine Business and Industry (CPBI).
For the 2019 MISSI index series with base year of 2000, the weights of the major industries and sub-industries were based from the results of the 2000 CPBI for manufacturing establishments with average total employment of 20 and over. The weights are computed from the value of products sold plus change in inventories.
The formulas in the computation are as follows:
Value of Production Index (VaPI)
The formula above was modified to a chained index formula to allow for changes in the composition of the sample establishments under each sub-industry, as follows:
Industry group level without corresponding sub-industries (2/3-digit PSIC)
The formula was modified to a chained index formula to allow for changes in the composition of the sample establishments under each sub-industry, as follows:
Industry group level with corresponding sub-industries (2/3-digit PSIC)
Total Manufacturing (1-digit PSIC)
The same methodology is used to compute the Value of Net Sales Index (VaNSI)
Volume of Production Index (VoPI)
Industry class level (3/4-digit PSIC)
Industry group level with no corresponding sub-industries (2/3-digit PSIC)
Total Manufacturing (1-digit PSIC)
The same methodology is used to compute the Volume of Net Sales Index (VoNSI)
- Computation of Growth Rates
Year-on-year growth rates are computed by dividing the current month index by the index in the same month of the previous year less 1.
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Industry Coverage
The 2019 MISSI utilizes the 2009 PSIC to classify major industries and sub-industries. Twenty major industries of the 2009 PSIC were formed to comprise the industry coverage of the 2019 MISSI. These are presented in the table below.
2009 PSIC CODE
INDUSTRY DESCRIPTION
C10
Food manufacturing *
C11
Beverages
C12
Tobacco products
C13
Textiles*
C14, C152
Footwear and wearing apparel
C151
Leather products
C16
Wood and wood products*
C17
Paper and paper products
C18
Printing ang reproduction of recorded media
C19
Petroleum products*
C20,C21
Chemical products*
C22
Rubber and plastic products*
C23
Non-metallic mineral products*
C24
Basic metals*
C25,C3311
Fabricated metal products
C262,C275,C28,
C263,C268,C3312,C332
Machinery except electrical*
C261,C264,C27,
C29301,C3314,C332
Electrical machinery*
C29 except C29301,
C30,C3315
Transport equipment
C31
Furniture and fixtures
C265,C266,C267,C32, C3313,C3319
Miscellaneous manufactures
Note: * - Major industry groups categorized into sub-industry classes