Similar polysomnographic pattern in primary insomnia and major depression with objective insomnia: a sign of common pathophysiology?

Table 1 Demographics results

	Mean (SD) Normative (N = 30)	Mean (SD) Insomnia (N = 84)	Mean (SD) Depression (N = 95)	Median (P25-P75) Normative (N = 30)	Median (P25-P75) Insomnia (N = 84)	Median (P25-P75) Depression (N = 95)	P-value
Gender (M)	63.33%	58.33%	43.16%				0.053^a
Age (years)	37.67 ± 11.16	42.38 ± 11.85	43.58 ± 12.37				0.065
BMI (kg/m²)	27.24 ± 6.05	25.85 ± 4.88	26.60 ± 6.53				0.480
ISI	4.30 ± 2.60	17.88 ± 2.77	18.82 ± 4.99	5 (3–6)	17 (15–20)	19 (17–23)	<0.001^b
BDI	1.13 ± 1.48	2.51 ± 1.17	14.59 ± 4.27	0 (0–2)	3 (2–3)	14 (11–17)	<0.001^b
ESS	5.53 ± 2.39	10.40 ± 5.17	9.94 ± 5.43	6 (4–7)	10 (7–14)	11 (6–13)	<0.001^b
							^aPearson Chi² ^bKruskal-Wallis Test

BMI Body Mass Index, ISI Insomnia Severity Index, BDI Beck Depression Inventory, ESS Epworth Scale

ISSN: 1471-244X