Accuracy and reliability
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Data for the National Archives / Government Archives are drawn directly from their operating systems for inventory of their own activities. On the other hand, the City and Local Archives are based on reports from many and very small entities, which in many cases are run by volunteers, not professionals.
Overall accuracy
The statistics cover overall the size and activity of the Danish archives. Data for the National Archives / State Archives are drawn directly from their operating systems, which minimizes possible errors.
For the Organization Danish Archives (ODA) and City and Local Archives (SLA), data is collected manually from many and very small units. Accuracy and reliability for the City and Local Archives (SLA) may therefore be more fluctuating than data provided by the National Archives / State Archives.
Sampling error
Not relevant for this statistic.
Non-sampling error
The statistics are broadly comprehensive for Danish archives. Data from the National Archives / State Archives is based on their operating system, which minimizes errors. On the other hand, data for the Organization of Danish Archives (ODA) and the City and Local Archives (SLA) is manually filed from many different archives where error entries can occur. In case of error entries or missing values, the values of the imputer from previous years.
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 real quality measurement has been performed, but data for the National Archives / State Archives is drawn directly from their operating systems, minimizing the risk of misplaced values. Data for the Organization Danish Archives (ODA) and City and Local Archives (SLA) is based on manual reporting from many and very small archives, whereby the quality of the reports may fluctuate. There are no data windows in the tables. For the state archives, the time series goes back to 2007, and the time series for the City and Local Archives goes back to 2011. Statistics Denmark can thus evaluate data by comparing with previous year's reports.
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
Only final statistics are published.