SUMMARY OF DATA STREAMS

The Survey Stream

The survey stream consists of businesses with directly collected EAS data. These are the completely enumerated ABSMP businesses (those with employment of at least 300) and randomly sampled employing businesses exceeding a turnover threshold level from both the ABSMP and ATOMP. Directly collected EAS data were used for these units.


The Modelled Stream

The modelled stream includes employing businesses, not in the survey stream, whose turnover was higher than the threshold set for their ANZSIC class (where the threshold was set so that the contribution of surveyed businesses would account for approximately 97.5% of total industry class turnover).

ATOMP units

Most businesses in the modelled stream are ATOMP units. Modelled data were created through the use of robust, trimmed regression estimators, which used survey data regressed against BAS data. The BAS data were found to have a high correlation with corresponding data from the EAS.

The regression factors were obtained by utilising ATOMP sampled units from the survey stream and comparing their reported survey data with their matching BAS data. These regression factors were created at the ANZSIC subdivision level. Sales and service income was modelled using BAS total sales as the auxiliary variable; wages and salaries, employment and IVA were modelled using BAS wages and salaries. Modelling of employment also took into account the business type (i.e. type of legal organisation) using a factor created at the ANZSIC division level.

Modelled data for ATOMP units in the modelled stream were created by multiplying their BAS data by the calculated regression factors.

ABSMP units

For ABSMP businesses not directly surveyed with employment of 20 or more, their data was modelled from data collected from ABSMP units in the survey stream.


Micro Non-Employing Stream

This stream includes ATOMP units which are non-employing businesses operating in only a single state or territory and whose turnover for each ANZSIC class was below the turnover threshold. For these businesses sales and service income and wages and salaries use BAS data directly, simple modelling of BAS data creates industry value added and employment is based on the business type of (legal) structure, e.g. a sole proprietor or partnership.

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