Table 1.

Ages of the subjects and their scores on the DBAS-16 (mean ± SD, N = 1,333)

Characteristics	Minimum	Maximum	Mean	SD
Age (years)	16	26	20.74	1.31
Consequences of insomnia	5	25	14.58	3.313
Worry/helplessness about sleep	6	30	18.52	3.750
Expectations for sleep	2	10	4.56	1.615
Medication	3	15	11.29	2.411
Total DBAS-16	16	80	48.95	8.366

Abbreviation: DBAS-16, Dysfunctional Beliefs and Attitudes about Sleep Scale.