Table 1.

Demographic and clinical characteristics of patients

	CBT-i (N=41)	Control (N=100)	p
Mean age, years (SD)	51.80 (14.62)	52.12 (14.04)	0.90
Sex, male/female	10/31	26/74	0.84
Patients with psychiatric comorbidities, N (%)	7 (17)	13 (13)	0.33
Patients with medical comorbidities, N (%)	13* (31)	34† (34)	0.80
Patients with cancer, N (%)	4‡ (10)	10§ (10)	0.97
Mean duration of total follow-up, days (SD)	541.85 (694.95)	610.09 (643.33)	0.58

^*hypertension (N=3), diabetes mellitus (N=2), chronic heart failure (N=1), destroyed lung due to old pulmonary tuberculosis (N=1), cancer (N=4),

^†hypertension (N=8), diabetes mellitus (N=3), coronary artery disease (N=3), end stage renal disease (N=2), migraine (N=2), asthma (N=1), herniated cervical disc (N=1), osteoporosis (N=1), hyperthyroidism (N=1), aneurysm (N=1), cancer (N=10),

^‡breast cancer (N=2), thyroid cancer (N=1), acute myeloblastic leukemia (N=1),

^§breast cancer (N=6), advanced gastric cancer (N=2), thyroid cancer (N=1), sigmoid colon cancer (N=1).

CBT-i: cognitive behavioral therapy of insomnia, SD: standard deviation