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Table 2 Mean (SD)/median (IQR) total and subscale scores on ASD measures

From: Autism symptoms in anorexia nervosa: a comparative study with females with autism spectrum disorder

 

AN (n = 64)

REC (n = 46)

ASD (n = 41)

TD (n = 67)

Test statistics

p-value

Effect size

AQ-10

       

Total†

3.00 (2.50)a

3.00 (2.00)a

8.00 (3.00)b

2.00 (2.00)c

X2(3) = 82.22

 < 0.001

0.37

% scoring above cut-off (6)

14.8%a

18.2%a

84.6%b

4.6%a

X2(3) = 91.95

 < 0.001

0.66

SRS-2‡

       

Total (raw)

76.06 (33.39)ab

67.09 (30.48)a

84.92 (23.39)b

34.88 (22.85)c

F(3,137) = 24.02

 < 0.001

0.35

Total (t-score)

62.66 (11.86)ab

59.33 (10.75)a

65.67 (8.30)b

48.03 (8.07)c

F(3,137) = 23.92

 < 0.001

0.34

Social awareness

6.09 (3.41)ac

6.52 (3.28)a

9.81 (2.47)b

4.63 (2.81)c

F(3,137) = 19.83

 < 0.001

0.30

Social cognition

13.28 (6.66)a

11.33 (5.56)a

17.67 (3.98)b

6.00 (5.25)c

F(3,137) = 30.41

 < 0.001

0.40

Social communication

22.63 (11.46)ab

19.79 (12.10)a

28.58 (8.54)b

9.73 (8.77)c

F(3,137) = 22.63

 < 0.001

0.33

Social motivation

17.81 (7.20)a

16.00 (7.16)a

14.67 (5.27)a

8.95 (4.75)b

F(3,137) = 14.63

 < 0.001

0.24

Restricted interests and repetitive behaviours

16.25 (8.36)a

13.45 (7.27)a

14.19 (7.25)a

5.57 (4.19)b

F(3,137) = 17.68

 < 0.001

0.28

ADOS-2

       

Total†

5.00 (5.00)a

3.00 (4.25)ac

8.00 (7.00)b

2.00 (3.00)c

X2(3) = 50.69

 < 0.001

0.22

Social affect†

3.50 (4.75)a

2.00 (3.00)ac

7.00 (7.00)b

1.00 (3.00)c

X2(3) = 47.58

 < 0.001

0.21

Restricted and repetitive behaviour†

1.00 (200)a

0.00 (3.00)ab

1.00 (2.00)ab

0.00 (1.00)b

X2(3) = 12.69

0.005

0.05

% scoring above cut-off [8]

26.6%a

15.2%ac

56.1%b

3.0%c

X2(3) = 43.21

 < 0.001

0.45

  1. ADOS-2, autism diagnostic observation schedule, 2nd edition; AN, anorexia nervosa; ASD, autism spectrum disorder; AQ-10, 10-item autism quotient; IQR, interquartile range; REC, recovered anorexia nervosa; TD, typically developing controls; SD, standard deviation; SRS-2, Social Responsiveness Scale, 2nd edition
  2. Different superscripts indicate significant differences between groups, significant p-values (< .01) are highlighted in bold
  3. †Median and IQR
  4. ‡Note that 64% of the total sample took the SRS-2; 32 AN, 33 REC, 36 ASD, 40 TD