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China's Experience in Industry Classification and Data Conversion

Explore China's Industrial Classification for National Economic Activities revision in 2002, focusing on category modifications and data conversion methods. Learn about the corresponding relations between old and new classifications and data conversion experiences in China's Statistical System. Find out how provinces handle data conversions and unit database adjustments.

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China's Experience in Industry Classification and Data Conversion

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  1. 中国在新旧行业分类标准对照及资料转换方面的经验中国在新旧行业分类标准对照及资料转换方面的经验 China’s Experience on the Classification Standard between New and Old Industries and Data Conversion

  2. The Industrial Classification for National Economic Activities (CSIC, Rev.2002) was revised under the leadership of the National Bureau of Statistics of PRC and organized by the relative departments of State Council.

  3. It has been promulgated and implemented on May, 10 2002.

  4. 1. Brief introduction to the existed industrial classification in China

  5. CSIC Rev. 2002 was revised on the basis of the classification standard in 1994 (CSIC Rev. 1994).

  6. CSIC Rev. 2002 has been greatly modified and adjusted, comparing with previous version in 1994.

  7. The total number of the categories in each four levels of the new classification has been increased section has been added by 4; division has been added by 3; group has been added by 28; class has been added by 67

  8. In the view of specific classification categories, some categories have been added while others reduced.

  9. On the one hand, the new classification of version 2002 especially focused on the classification of service

  10. From section E to section T The section added by 4 the division added by 3 the group added by 31 the class added by 124

  11. On the other hand, we make the categories greatly reduced in the section Mining and Manufacture Mining reduced by 20 classes Manufacture reduced by 62 classes

  12. The final revision • no changes, • reduced or cancelled, • further subdivided from the original class, respectively takes up 1/3 each.

  13. 2. The improvement of corresponding method between the new classification and the old

  14. In CSIC revision 2002, we have changed the old method

  15. Not only listing a changing process for the each category with written explanation But also listing detailed corresponding code and title of the new and old classes

  16. There are three kinds of corresponding relations: • no changes • reduced or cancelled • further subdivided from the original class

  17. NBS has also developed two kind of software • one is for the conversion between the new classification and the old • another is CSIC Inquiry System

  18. 3. The method and experience for conversion of data for China’s Basic Unit Database

  19. The Government Statistical System of China

  20. The different condition for statistics foundation in various provinces The different conversion method in each province also

  21. There are primarily two kinds of methods

  22. One way • The improvement of the new-old corresponding method makes it possible to use computer to adjust history data

  23. Most provinces have adopted this kind of data conversion method to adjust the unit database

  24. The number of industry classes of the 2002 version • no changes, • deleted, • subdivided to new industry classes, • respectively occupy about 1/3 of the total number

  25. 376 industry classes can (one-to-one) be directly converted • another 388 old industry classes can be directly merged into the nearly 200 new industry classes . • (multiple-to-one)

  26. The remaining industry classes (around 1/3 one-to-multiple) • can be further determined respectively • with the primary activities filled into questionnaire by the units.

  27. The census data show • the number of the corporate units in each region is around several hundred thousand. • the maximum number of corporate units will be more than ten thousand in county level

  28. Another way • To add an indicator of new industry code in the 2002 basic unit survey questionnaire, • fill out the code of new and old industries respectively in accordance with the primary activities filled out by enterprises or units

  29. In comparison the two methods each have their advantages and disadvantages.

  30. This shows • The first method that uses correspondence conversion software can apparently reduce the workload of statistics office at basic level and increase work efficiency

  31. This shows • The second method of re-determination of the industries involves huge workload, yet data quality collected by the second method will be relatively higher.

  32. One point is important • The conversion work of the data must be done by the statistics office at basic levels

  33. Not only conforms to the China’s reality of decentralized statistical system (province has their own database) But also can effectively reduce the workload

  34. Thank you!

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