Accuracy and reliability

Overall accuracy

Response rate is 71 per cent.

Sampling error

Not relevant for these statistics.

Non-sampling error

In 2014, the response rate was 71 per cent.

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

Some other research libraries fail to report to the research library statistics. There have never been imputed or calculated for the missing values. Therefore, data is underestimated in relation to the actual level. All research libraries with special commitments have reported to the statistics. The statistics are based on the DS / ISO 2789 standard, which is the international standard for compiling library statistics.

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

There is not published preliminary figures.