Table 1
Summary statistics of the estimation sample
Omicron
Delta
Rest
n
7046
14 369
592 033
Person-weeks
56 368
114 952
4 736 264
Age, mean (SD)
6.1 (3.1)
6.9 (2.8)
5.1 (3.2)
Born in foreign country (%)
7.2
6.3
5.5
Parents born in foreign country (%)
53.7
43.0
38.8
Boys (%)
51.3
51.4
51.3