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Table 1 Descriptive analyses of sample characteristics across the sites of recruitmenta

From: A quantitative association study of SLC25A12 and restricted repetitive behavior traits in autism spectrum disorders

 

UIC

(n = 88)

UF

(n = 91)

SSC

(n = 720)

P value (χ2/ANOVA)b

Post hoc(Scheffé)

Age in yearsa

8.3 ± 4.8

10.8 ± 3.6

6.9 ± 2.8

< 0.001

UF>>c

Gender, M:F

75:13

75:16

620:100

NS

 

Race, white:other

57:31

68:23

583:137

0.001

 

Communication

76.2 ± 13.9

68.0 ± 17.0

79.4 ± 13.9

< 0.001

SSC>>d

Daily living

75.1 ± 12.5

71.6 ± 17.9

78.6 ± 13.8

< 0.001

SSC>>

Socialization

67.5 ± 10.3

62.4 ± 16.0

72.7 ± 12.7

< 0.001

SSC>>

Adaptive behavior composite

71.7 ± 11.0

66.1 ± 14.7

75.1 ± 11.8

< 0.001

SSC>>

RBS-R

     

Stereotyped behavior

6.2 ± 4.1

5.4 ± 3.3

4.1 ± 3.2

< 0.001

SSC<<e

Self-injurious behavior

3.4 ± 4.8

4.1 ± 4.5

2.0 ± 2.8

< 0.001

SSC<<

Compulsive behavior

6.9 ± 5.5

6.1 ± 5.1

4.1 ± 3.8

< 0.001

SSC<<

Ritualistic behavior

7.2 ± 5.4

6.2 ± 4.3

5.2 ± 3.9

< 0.001

SSC<<

Sameness behavior

11.1 ± 8.0

10.9 ± 7.1

7.8 ± 6.0

< 0.001

SSC<<

Restricted behavior

5.6 ± 3.3

4.8 ± 3.3

3.6 ± 2.7

< 0.001

SSC<<

Sum

37.4 ± 21.8

36.5 ± 19.6

26.9 ± 17.1

< 0.001

SSC<<

ABC

     

Irritability

16.0 ± 11.1

16.2 ± 10.2

10.9 ± 8.5

< 0.001

SSC<<

Lethargy

14.0 ± 9.0

13.5 ± 8.6

9.5 ± 6.9

< 0.001

SSC<<

Stereotypy

6.5 ± 4.9

6.8 ± 5.0

4.6 ± 4.0

< 0.001

SSC<<

Hyperactivity

21.0 ± 12.5

21.2 ± 11.3

16.0 ± 10.2

< 0.001

SSC<<

Inappropriate speech

4.6 ± 3.4

4.3 ± 3.1

3.7 ± 2.9

< 0.01

SSC<

Sum

62.1 ± 32.9

62.0 ± 28.5

44.7 ± 24.6

< 0.001

SSC<<

  1. aData are mean ± SD unless otherwise stated.
  2. bχ2/ANOVA: frequency data (gender, race) were analyzed by χ2 statistics, whereas the remaining scale data were analyzed by ANOVA statistics,
  3. cUF>>: higher mean age in the UF sample compared with those of UIC-ACE or SSC.
  4. dSSC>>: higher mean scores in the SSC sample compared with those of UIC-ACE or UF.
  5. eSSC<<: lower mean scores in the SSC sample compared with those of UIC-ACE or UF.