Accuracy and reliability

Overall accuracy

A number of factors mean that the statistics underestimate the sale of musical works: Source data covers record companies that are members of IFPI and rights holders organized in Koda and Gramex. Sales from record companies or rights holders who are not members of said organizations are not covered by the statistics. There may also be a lack of reporting from the use of music in public in Koda data. Illegal downloads are also not included in the data base. Conversely, over-coverage may also occur if the data base includes rights payments from playing music in previous years. Postpostings of deposits and withdrawals after data has been submitted to Statistics Denmark can contribute to time shifts in relation to the time of sale.

Sampling error

Not relevant for this statistic.

Non-sampling error

A number of factors mean that the statistics underestimate the sales of musical works: According to its own information, IFPI organizes 95 per cent. of the record companies' turnover, sales of music works from record companies outside IFPI are therefore not included. Some rights holders manage their rights themselves and are thus not part of the data base from Koda and the other rights organizations. There may be a lack of reporting from public use of music in Koda data. Illegal downloads are not included in the data base. Conversely, over-coverage may also occur if the data base includes rights payments from playing music in previous years. Post-postings of deposits and withdrawals after data has been submitted to Statistics Denmark can contribute to time shifts in relation to the time of sale.

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

The statistics are based on central and known authoritative sources, which help to ensure the quality of the results. The statistics have a number of sources of error, which are described under point. 5.3. No actual quality assessment has been made of the final results of the statistics other than the quality assurance described during data validation.

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 will not be published preliminary figures.