Where do the numbers come from?
The figures on people over 70 living at home are provided by the National Institute for Public Health and the Environment (RIVM). RIVM supplies the figures as an open data file.
- Download the csv-file with RIVM’s open data on people over 70 living at home
- See RIVM’s description of the data set on people over 70 living at home
How are the numbers calculated?
For its calculations RIVM uses the test results and mortality data that it receives from the municipal health service (GGD). When someone newly tests positive for coronavirus, the GGD records a number of details, including the person’s age and if they live in a nursing home or disability care home. RIVM calculates the number of new cases among over 70s living at home by first determining the total number of new cases in this age group and then subtracting the number of infections among:
- nursing home residents
- health workers
- people who can be linked to a nursing home or a location for disability care on the basis of their postcode
- people who can be linked to a nursing home or a residence for disability care on the basis of the location where the infection occurred.
We show the number of deaths among over 70s by the date of death. If we do not know the date of death, which is sometimes the case, we do not show the death on the dashboard.
Number of confirmed cases among the over 70s per 100,000
In order to compare groups of people with one another, we convert some figures to figures per 100,000 people. Likewise for the over 70s living at home. Statistics Netherlands collect data on the number of persons aged 70 and older who live at home (cbs.nl: 'StatLine - Huishoudens; personen naar geslacht, leeftijd en regio, 1 januari' in Dutch only). In the Netherlands, this group comprises around 2.3 million people.
Average over 7 days
The graph showing the number of confirmed cases among people over 70 living at home and the graph showing the number of deaths of people aged over 70 shows the average over 7 days.
Adjustments and corrections
Change in delivery of data from 1 January 2023
As of 1 January 2023, if a test result is positive, it will no longer be recorded whether a person over 70 lives at home or lives in a nursing home.
This information was passed on by the GGDs and was an important source of information at an earlier stage of the COVID-19 pandemic. In the meantime, other monitoring instruments and information sources (such as Infectieradar, sewage and germ surveillance and hospital registrations) have become important or have been further developed.
From 10 January 2023, people over 70 who have tested positive will be reported as residents of a nursing home, provided that the postal code of this person corresponds to the location of a nursing home. This information will be shown on a new page about Vulnerable groups and 70+.
The number of positive test results by age group and 70+ will continue to be updated on the page Positive Tests.
If the epidemiological situation changes and additional data sources are required, the GGDs can be asked to provide additional information.