Table 1.

Psychiatric comorbidity as defined by ICD-10

ICD-10 code		Participants with ASD (n = 105)
	All comorbid psychiatric diagnosis	94 (89.5%)
F30–39 Mood (affective) disorder	Any	69 (65.7%)
	Depression	66 (62.9%)
	Bipolar disorder	9 (8.6%)
	Hypomania	<3 (<2.9%)
F40–48 Neurotic, stress-related and somatoform	Any	63 (60.0%)
	Anxiety	58 (55.2%)
	OCD	18 (17.1%)
	Phobias	9 (8.6%)
	Agoraphobia	8 (7.6%)
	Panic disorder	8 (7.6%)
	PTSD	6 (5.7%)
F80–89 Psychological development	Any	30 (28.6%)
	Dyslexia	23 (21.9%)
	Dyspraxia	19 (18.1%)
F90–98 Disorders with onset occurring in childhood or adolescence	Any	22 (21.0%)
	ADHD	20 (19.0%)
	Oppositional defiant disorder	<3 (<2.9%)
	Tic disorders	<3 (<2.9%)
F20–29 Schizophrenia, schizotypal and delusional disorders	Any	13 (12.4%)
	Psychosis	12 (11.4%)
	Schizophrenia	4 (3.8%)
	Schizoaffective disorder	3 (2.9%)
F10–19 Disorders due to substance use	Any	13 (12.4%)
	Alcohol misuse	10 (9.5%)
	Other substance misuse	9 (8.6%)
F50–59 Syndromes associated with physiological disturbance	Any	8 (7.6%)
	Anorexia	4 (3.8%)
	Postnatal depression	3 (2.9%)
	Bulimia	<3 (<2.9%)
F60–69 Disorders of adult personality	Any	4 (3.8%)
	Borderline personality Disorder	3 (2.9%)
	Other personality disorder	<3 (<2.9%)
F00–09 Organic disorders	Pick's disease (frontotemporal dementia)	<3 (<2.9%)

Reported psychiatric comorbidity in participants with ASD grouped by ICD-10 classification. n indicates the number of individuals reporting the diagnosis; % indicates the percentage of the total amount of participants that responded.

ASD, autism spectrum disorder; OCD, obsessive–compulsive disorder; PTSD, post-traumatic stress disorder; ADHD, attention-deficit hyperactivity disorder.