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The occupational coding system is based on the 1980 Standard Occupational Classification.
For any occupational coding system that structures jobs by required skill levels, the clustering process generates two occupational groups with distinct levels of GSR.
The primary requirement for classification is a set of data on skills use in all types of jobs, alongside occupational coding.
And as such, one could imagine that, if the dual occupational coding of individuals (on the old and new classification) were to have continued over time, the elements of the transformation matrix may well have changed reflecting structural changs across occupations and/or improved methods of measurement.20 Unfortunately our study is unable to capture those changes.
The ORLS staff collected the data in the same way and coded occupational data and its associated social class according to the occupational coding manual of the OPCS.
For example, a previous analysis of health worker distribution using facility data from three developing countries acknowledged that the lack of a standardized occupational coding system to identify provider type resulted in difficulties in conducting cross-national comparisons [ 8].
Similar(53)
Employment status was based on the question "Did you work last week?" Occupational classifications were based on the 40 NCHS occupational codes (10) that appear in the NHANES data file.
Second, O*NET occupational codes corresponding to the main occupation were assigned to each participant.
Adult socioeconomic status was based on men's own occupation for those who had an occupational code and otherwise on household socioeconomic status.
It is possible that occupations may have been incorrectly assigned to an occupational code and hence assigned to an inappropriate exposure group.
The JEM also included occupational code, sex, and age group of the same occupation.
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