Table 1 Participant demographics for Down syndrome and typically-developing control groups.

From: Youth with Down syndrome display widespread increased functional connectivity during rest

 

Down syndrome (n = 19)

Control (n = 33)

Stat. significance

M

SD

Range

M

SD

Range

Age

16.53

4.99

7–23

17.53

5.15

9–24

n.s.

IQ

53.21

13.19

24–77

116.30

13.37

85–151

t(50) =  − 16.46, p < 0.001

Verbal IQ

54.42

14.97

30–71

117.12

13.51

82–156

t(50) =  − 15.5, p < 0.001

Nonverbal IQ

56.42

16.00

24–86

112.64

15.58

81–151

t(50) =  − 12.41, p < 0.001

Hollingshead SESa

41.68

15.69

20–63

37.31

20.77

20–115

n.s.

 

n

%

n

%

Stat. significance

Male, n (%)

6

32

15

45

n.s.

Right hand, n (%)b

12

63

25

76

n.s.

White, Non-hispanic, n (%)

15

79

22

67

n.s.

  1. aDown syndrome, n = 19; Control, n = 29.
  2. bDown syndrome, n = 18; Control, n = 33.