What does the survey comprise?
To provide figures on persons to whom medicines are dispensed that are reimbursed under the statutory basic medical insurance.
Persons to whom medicines are dispensed in the year under review that are reimbursed under the statutory basic medical insurance. This includes all persons registered in the Personal Records Database (BRP) in the year under review. Until 2010 the figures also included medicines dispensed to persons registered in the BRP, but not resident in the Netherlands. Persons receiving medicines in hospitals and in nursing homes are not included; those receiving medicines in residential homes for the elderly are included.
Year survey started
Data are available from 2006 onwards.
The figures are published yearly in several StatLine tables. Figures for the most recent year under review are provisional. Figures for the other years are definite.
How is the survey conducted?
Combination of data from registrations: Health care insurance companies supply data to the National Health Care Institute (Zorginstituut Nederland) about all dispensed medicines per person that are reimbursed under the statutory basic medical insurance. This registration is used for risk settlement (RVE-files) and is available from 2006. It is a dataset with complete coverage and almost completely linkable with the BRP through personal social security numbers (BSN). The classification of medicine groups is based on the G-Standard, the medicines database of the Royal Dutch Pharmacists Association (KNMP).
Datasets from registrations are delivered electronically to Statistics Netherlands.
The National Health Care Institute receives from health care insurers data about all dispensed medicines per person that are reimbursed under the statutory basic medical insurance.
The classification by medicine groups on the basis of article codes is provided by Z-Index of the Royal Dutch Pharmacists Association (KNMP).
Municipalities in the Netherlands supply data from the BRP to Statistics Netherlands.
Checking and correction methods
Data from the National Health Care Institute are checked in terms of completeness, plausibility and consistency. Other data sources and figures for previous years are also used for this.
Quality of the results
Data are based on a complete registration. The accuracy of the statistic depends on the accuracy of the registration. Almost all data originate from electronic systems of public pharmacies. See also ‘checking and correcting methods’.
The production process for the statistics has been comparable from 2006 onwards. Until 2010 the figures also included medicines dispensed to persons registered in the BRP, but not resident in the Netherlands. The impact of the demarcation from 2010 onward is however small. In the course the medicines eligible for reimbursement under statutory basic medical health Insurance also may change. These changes are nationwide. This affects with the comparability of dispensed medicines in time.
Specification of quality strategy
Results of statistical surveys are only be published when they have been judged to be plausible, and if necessary after adjustment, correct. The following procedures are carried out to determine the plausibility of the results:
- Longitudinal analysis (consistency in course of time);
- Indicator analysis (ratio between variables);
- Confrontation with results from other sources , e.g. data from Dutch Foundation for Pharmaceutical Statistics (SFK) and the Drug Information System of the Health Care Insurance Board (GIP database).