Table 1 Demographic characteristics of youth participants in publicly available data sets

SRS-2

N = 2282

N = 3365

N = 2867

N = 8132

N = 115

Mean age (SD), years

8.34 (3.54)

9.48 (3.55)

9.03 (3.56)

9.75 (3.85)

10.31 (2.99)

Female %

31.4

17.8

13.6

18.1

19.6

SCQ

–

N = 1012

N = 1185

N = 13,541

N = 102

Mean age (SD), years

–

5.94 (4.04)

8.82 (3.62)

8.05 (4.05)

10.31 (2.99)

Female %

–

14.3

18.4

19.6

ADI-R

N = 3733

N = 2398

N = 2854

–

–

Mean age (SD), years

8.73 (4.86)

8.89 (5.46)

9.02 (3.57)

–

–

Female %

22.5

21.2

13.6

–

–

ADOS Module 3

N = 1159

N = 2330

N = 1629

–

–

Mean age (SD), years

9.52 (3.0)

10.34 (3.19)

9.75 (3.15)

–

–

Female %

17.9

24.3

11.3

–

–

ADOS Module 4

N = 264

N = 849

N = 83

–

–

Mean age (SD), years

18.89 (7.52)

23.69 (9.24)

16.26 (1.40)

–

–

Female %

28.4

17.6

10.8

–

–