Statistical processing

Source data

The primary source is LUNA, which is the IT system used by the regions to process reimbursements for health insurance services. Additionally, there are supplementary sources regarding services from the tariff folders.

Internal Statistics Denmark-sources:

• The register of population statistics (ancestry)
• The register of income statistics (level of income) for the previous year
• The Employment Classification Module (SOCIO13) as of December 31st of the previous year – Education (BUE): Highest completed level of education as of 30 September of the previous year.
• The Relatives Register (resident parents, relatives, partner)

Frequency of data collection

Yearly.

Data collection

Register.

Data validation

The data received are compared with data from the previous year, and any major fluctuations examined to reassure quality. For the purpose of statistical production data are analyzed thoroughly.

Data compilation

In general, services that are not specified as supplementary services in the tariff are categorized as contacts. However assessments are made to determine whether the services services without limitation, is contact in the agreement texts can only be provided once per contact and exclude other services of the same type—thereby requiring categorization as a contact. For specialty 49 (dental hygienist) and 50 (dental care), consultations and examinations, including preventive treatments, are categorized as contacts. The number of contacts is calculated as the sum of the variable "number of services" for those services that are categorized as contacts.Exceptions include the specialties of diagnostic radiology (05) and podiatry (54, 55, 59, and 60), where the service with the lowest service number (the last four digits of the special) per person per treatment date is counted as the contact. Thus, individuals can have only one contact with diagnostic radiology and podiatry (54, 55, 59, and 60) per day in our data. This method has been chosen as it is considered to provide the best estimate of the number of contacts. However, this also means that a service within these specialties can be categorized both as a contact and not as a contact. . Starting from 2006, gender and age imputation has been performed for the smaller group of children registered with child marking, and the person_id is set to unknown. Basic data (SSSY) is generated from the above data, and basic data is created, where the number of contacts (SSKO) and gross fees (SSHO) are aggregated at the person and service level. In these data, spec2 for contacts with general practitioners is further divided into the following categories: daytime consultation, evening consultation, daytime telephone consultation, evening telephone consultation, daytime visit, evening visit, e-communication (including with municipal care staff), other services, and prevention, etc. Additionally, an indicator for the basic fee is calculated. This is calculated as the sum of the calculated basic and practice cost fees distributed among group 1 insured persons who have received services from general practitioners (excluding persons marked as children). For SSSY, a variable spec80 has been introduced from 2023, which indicates the above division. However, "Other services and prevention, etc." does not appear in SSSY, but the algorithm can be obtained by contacting the statistical responsible party. Likewise, the basic fee is not specified in SSSY.

Before the data is uploaded to the Statbank Denmark, further data processing takes place. Individuals with invalid CPR numbers, individuals with child marking, and corrections (negative values for the service) that cannot be associated with a registration in the respective fiscal year are deleted. This means that corrections (negative entries) that do not match any registrations on the variables person_id, 'date of treatment' (date of service), 'specialty' (type of service), and "ydeltid" (time of service) are excluded. Registrations where the variable 'SIKGRUP' (Health Insurance Group) has the value 9 (Deceased) are deleted. All deleted observations are assigned a value of 0 for the variable statpop in SSSY. The first registered gender and the first registered age are used for individuals who appear in the data with multiple CPR numbers. Health insurance data is linked to other data on family relations, origin, education, labour market attachment, and income.

Adjustment

From 2005, the register was cleansed of observations for which there are no reimbursements via the public health insurance (the gross fee equals 0). This applies primarily to physiotherapy and dental treatment. Accordingly, data is assessed for 2005 both by the old method of assessment by which data is not cleansed, and the new assessment method by which data is cleansed. The chronic care honoraria (0130, 0131, 0132, 0133) are not deleted for specialty 80 (general practice). As of 1 January 2024, the structured care pathway for patients with multiple sclerosis was implemented under specialty 62. The new pathway services have the service codes 0211, 0212, 0213, 0214, and 0215. For patients enrolled in these pathways, all services are covered by the pathway honorarium, and therefore these services appear in the data with a gross honorarium equal to 0. These services are not deleted.

There is a very small number of records where the contacts are negative. In 2024, there are 147.290 negative records (equivalent to 0.14pct. of all records). This is due to billing-related corrections in the registry, meaning corrections that are not made by Danmarks Statistik. Starting from 2021, corrections that cannot be linked to a registration in the respective year will be deleted before the compilation of the statistics bank.