Table 2.

Results of the online survey carried out by Sciensano, Belgium, December 2021 (N = 22,345),

Question	n	Weighted %
Ever used a self-test (N = 18,547)	8,365	45.1%
People who reported to have ever used a self-test (N = 8,996)
Average number of self-tests used	3.2
Reason for using a self-test (N = 8,974)
Because having symptoms	2,821	31.4%
After a risk contact in which feared to have been infected	2,415	26.9%
Before visiting someone	1,915	21.3%
Before going to work/school	638	7.1%
Before or after travel	423	4.7%
Having been altered for a risk contact by the Coronalert app	242	2.7%
Other	520	5.8%
Result of last test
Positive	621	6.9%
Negative	8,360	92.9%
Invalid/failed	18	0.2%
People who reported a positive result of the last test (N = 613)
Confirmation of positive self-test
Yes	502	81.8%