Istat suggests to move the following sub-process, including it into former sub-process 5.5 (see above).
6.1. Prepare draft outputs - This sub-process is where the data collected are transformed into statistical outputs. It includes the production of additional measurements such as indices, trends or seasonally adjusted series, as well as the recording of quality characteristics.
5.5. Derive new variables, statistical units and indicators - This sub-process derives (values for) variables and statistical units that are not explicitly provided in the collection, but are needed to deliver the required outputs. It derives new variables by applying arithmetic formulae to one or more of the variables that are already present in the dataset. This may need to be iterative, as some derived variables may themselves be based on other derived variables. It is therefore important to ensure that variables are derived in the correct order. New statistical units may be derived by aggregating or splitting data for collection units, or by various other estimation methods. Examples include deriving households where the collection units are persons, or enterprises where the collection units are legal units.
Data collected are also transformed into other statistical outputs, through the production of additional measurements such as indices, trends or seasonally adjusted series, as well as the recording of quality characteristics.