. 2021 Jun 30;12:47. doi: 10.1186/s13229-021-00455-5

Table 2.

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

	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

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

Different superscripts indicate significant differences between groups, significant p-values (< .01) are highlighted in bold

^†Median and IQR

^‡Note that 64% of the total sample took the SRS-2; 32 AN, 33 REC, 36 ASD, 40 TD