Accuracy and reliability

Overall accuracy

These statistics do not cover foreign trade in organic products with the smallest companies. The size of the remaining uncertainty is not estimated.

Sampling error

Not relevant for these statistics.

Non-sampling error

The statistics do not cover foreign trade in organic products with the smallest companies. Some companies find it difficult to identify organic goods in their accounting systems.

No sampling uncertainty as the survey is a total census. The population's threshold may lead to an underestimation of the actual external trade of organic goods between Denmark and other countries.

For some companies, the following may apply:

• Problems with identifying organic goods in their accounting systems, which may lead to underreporting.
• Import and export of wild-caught fish can be misplaced as organic.
• Incorrect currency conversion may cause a mismatch between price and quantity.
• At company discontinuation, it may be difficult to get exact information.
• If foreign trade is registered with freight forwarders, they may have difficulty separating the ecological part.

Quality management

Statistics Denmark follows the recommendations on organisation and management of quality given in the Code of Practice for European Statistics (CoP) and the implementation guidelines given in the Quality Assurance Framework of the European Statistical System (QAF). A Working Group on Quality and a central quality assurance function have been established to continuously carry through control of products and processes.

Quality assurance

Statistics Denmark follows the principles in the Code of Practice for European Statistics (CoP) and uses the Quality Assurance Framework of the European Statistical System (QAF) for the implementation of the principles. This involves continuous decentralized and central control of products and processes based on documentation following international standards. The central quality assurance function reports to the Working Group on Quality. Reports include suggestions for improvement that are assessed, decided and subsequently implemented.

Quality assessment

No sampling uncertainty as the survey is a total census. The population's threshold may lead to an underestimation of the actual external trade of organic goods between Denmark and other countries.

For some companies, the following may apply:

• Problems with identifying organic goods in their accounting systems, which may lead to underreporting.
• Import and export of wild-caught fish can be misplaced as organic.
• Incorrect currency conversion may cause a mismatch between price and quantity.
• At company discontinuation, it may be difficult to get exact information.
• If foreign trade is registered with freight forwarders, they may have difficulty separating the ecological part.

Data revision - policy

Statistics Denmark revises published figures in accordance with the Revision Policy for Statistics Denmark. The common procedures and principles of the Revision Policy are for some statistics supplemented by a specific revision practice.

Data revision practice

Normally only final statistics are published.