Table 1 Descriptive characteristics of the study participants

Age, years

0.191^a

0.125^a

 11 (≤ 11.4)

223

27.6

2.96 (0.28)

10.58 (3.09)

 12+ (≥ 11.5)

585

72.4

2.93 (0.29)

10.20 (3.30)

Gender

0.339^a

0.519^a

 Boy

375

46.4

2.95 (0.27)

10.38 (2.97)

 Girl

433

53.6

2.93 (0.31)

10.24 (3.47)

Language

0.189^b

0.430^b

 Finnish

687

85.0

2.93 (0.29)

10.24 (3.28)

 Swedish

88

10.9

2.97 (0.26)

10.56 (3.12)

 Other

33

4.1

3.01 (0.28)

10.85 (2.92)

Sequence depth

0.461^a

0.798^a

 Medium (10,000–100,000)

553

66.1

2.95 (0.28)

10.29 (3.07)

 High (> 100,000)

255

30.5

2.93 (0.33)

10.35 (3.62)