Statistical processing

Source data

The material flow accounts are based on information from statistics on Danish resource extraction, such as agricultural statistics, forestry statistics, and statistics on the extraction of oil and natural gas, as well as other raw materials (sand, gravel, etc.). Additionally, data on imports and exports from the Foreign Trade in Goods statistics are used.

The model calculation underlying the material flow accounts measured in raw material equivalents is based not only on the mentioned source statistics but also on data on international trade provided by Eurostat.

Frequency of data collection

Yearly.

Data collection

Deliveries from other statistics.

Data validation

Thorough troubleshooting and data validation are conducted on the various source statistics before they are delivered to the Material Flow Accounts. Since not all sources have data for the latest year at the time of the publication of the material flow accounts, the weight of some sources relies on assumptions. Not all goods are measured by weight in the source statistics. The weight of these goods is estimated based on weight measurements in other source statistics or weight estimates from Eurostat.

During the preparation of the Material Flow Accounts, the latest version is compared with previous versions. The purpose is to check the consistency of data over time and to identify any errors in loading, etc.

Data compilation

Data from the various sources on which the Material Flow Accounts are based are compiled into a unified system using the same definitions and classifications as the National Accounts.

Since the Material Flow Accounts are measured in weight, conversion from value to weight is carried out for material types where weight is not included in the source statistics. This is done using a series of conversion factors.

Material flows measured in raw material equivalents are calculated using a model developed by Eurostat. Eurostat refers to the model as the 'RME-tool', where RME stands for Raw Material Equivalent. The model estimates raw material equivalents for imports and exports and is based on, among other things, data on international trade.

Adjustment

Not relevant for these statistics.