Table 2.

Adolescents’ main and secondary diagnoses

ICSD-2 sleep disorders	Main diagnosis		Secondary diagnosis
	N (18)	Percent	N	Percent
Psychophysiological insomnia	9	50.00	5	27.78
Insomnia because of inadequate sleep hygiene	7	38.89	9	50.00
Behavioral insomnia of childhood	2	11.11	6	33.33
Somnambulism	0	0	1	5.55
Nightmares	0	0	2	11.11

Note: Several adolescents had more than one additional sleep disorder.

Abbreviation: ICSD-2, International Classification of Sleep Disorders 2nd edition.