Table 1. Physical, clinical, and behavioral characteristics of patients with chronic primary insomnia.

Variable	Female (n=50)	Male (n=14)	Total (n=64)
Age (years)	43.3±7.9	46.0±8.6	43.9±8.1
Duration of insomnia (years)	7.7±7.6	7.6±7.3	7.6±7.5
MEQ questionnaire (score)	55.9±11.9	54.6±10.5	55.7±11.6
STAI
Trait (score)	41.6±9.2	47.1±9.9	42.8±9.6
State (score)	39.9±8.9	37.5±7.1	39.4±8.6
State, pre-sleep (score)	38.6±9.7	38.8±8.2	38.6±9.3

Data presented as mean ± standard deviation.

MEQ = Horne and Östberg Morningness-Eveningness Questionnaire; STAI = State-Trait Anxiety Inventory.