Impaired social cognition in anorexia nervosa patients

Figures & data

Table 1 Demographic and clinical variables of the AN and HC groups

	AN (n=18)	HC (n=18)	Statistics	P-value	Effect size
	Mean ± SD	Mean ± SD
Age (years)	35.44±8.65	32.78±9.44	U= 129.50	0.303	−0.17
IQ from JART	101.06±9.89	107.78±11.23	U= 109.50	0.095	−0.28
Duration of illness	12.61±10.55	−	−	−	−
BMI (kg/m^2)	14.78±2.28	20.92±1.69	U=0.00***	<0.0001	−0.86
BDI-II	31.72±15.90	6.17±7.01	U=30.00***	<0.0001	−0.70
STAI-JYZ
State anxiety	53.56±15.24	36.06±8.78	U=51.50***	<0.0001	−0.58
Trait anxiety	62.00±13.57	38.44±9.37	U=29.00***	<0.0001	−0.70

Notes:

*** P<0.000L Statistics are based on Mann–Whitney U-test

Abbreviations: AN, anorexia nervosa; BMI, body mass index; BDI-II, Beck Depression Inventory-second edition; HC, healthy controls; IQ, intelligence quotient; JART, Japanese Adult Reading Test; SD, standard deviation; STAI-JYZ, State–Trait Anxiety Inventory-Form JYZ.

Table 2 Social cognition task data for the AN and HO groups

	AN (n=18)	HC (n=18)	Statistics	P-value	Effect size
	Mean ± SD	Mean ± SD
SCSQ
Verbal memory	8.00±1.28	8.67±0.77	U=115.50	0.119	−0.26
Schematic inference	8.56±0.98	8.94±0.80	U=124.00	0.204	−0.21
Theory of mind	7.50± 1.25	8.61 ±1.15	U=85.50*	0.012	−0.42
Metacognition	9.39±0.62	9.81 ±0.26	U=94.00*	0.023	−0.38
Hostility bias	1.22±1.00	0.78±0.65	U=125.00	0.199	−0.22
Total score	33.44±2.34	36.04±1.97	U=67.50**	0.003	−0.50

Notes:

* P<0.05,

** P<0.0l. Statistics are based on Mann–Whitney U-test

Abbreviations: AN, anorexia nervosa; HC, healthy controls; SCSQ, Social Cognition Screening Questionnaire; SD, standard deviation.