TABLE 1.

Descriptive statistics, ANOVA, and chi-squared test results.

Day-level variable
	Overall (n = 2129)		MDD (n = 1023)		MDS (n = 661)		CON (n = 445)		P-value
	Mean	SE	Mean	SE	Mean	SE	Mean	SE
Sleep efficiency (%)	94.30	0.19	94.18	0.28	94.41	0.35	94.44	0.42	0.820
Person-level variable
	Overall (N = 100)		MDD (N = 48)		MDS (N = 31)		CON (N = 21)		P-value
Sex
Male	40 (40.00%)		22 (45.83%)		10 (32.26%)		8 (38.10%)		0.476
Female	60 (60.00%)		26 (54.17%)		21 (67.74%)		13 (61.90%)
	Mean	SD	Mean	SD	Mean	SD	Mean	SD
Age	24.33	3.18	24.10	2.83	24.58	3.33	24.48	3.79	0.791
BED (min)	379.98	52.32	380.85	51.45	378.90	42.99	379.60	67.48	0.987
PHQ	8.77	5.12	11.06	4.61	8.81	4.48	3.48	2.77	<0.001
GAD	6.04	5.04	7.90	4.90	6.26	4.89	1.48	1.72	<0.001
QOL	48.39	9.61	44.06	7.82	49.13	9.62	57.19	6.94	<0.001
NEO1	39.05	5.96	38.85	6.30	39.45	5.97	38.90	5.35	0.904
NEO2	37.14	7.17	35.48	6.64	37.81	8.28	39.95	5.68	0.046
NEO3	34.07	6.96	33.15	7.34	33.00	6.62	37.76	5.42	0.022
NEO4	41.94	8.33	45.25	7.48	41.42	6.82	35.14	8.19	<0.001
NEO5	41.62	6.64	41.81	7.05	41.52	6.16	41.33	6.67	0.958
BIS	66.99	11.68	67.48	10.96	67.81	11.90	64.67	13.14	0.591
PSQI	7.83	2.85	8.44	2.71	7.23	3.06	7.33	2.65	0.121

The P-value reported in the sleep efficiency variable is a random ANOVA result that take into account the nested structure of the data, and the P-value described in the Sex variable is a result of the chi-squared test; MDD, major depressive disorder; MDS, mild depressive symptoms; CON, control; BED, time in bed; PHQ, Patient Health Questionnaire-9; GAD, General Anxiety Disease-7; QOL, WHO quality of life; NEO1, NEO agreeableness; NEO2, NEO conscientiousness; NEO3, NEO extraversion; NEO4, NEO neuroticism; NEO5, NEO openness to experience; BIS, Barratt Impulsiveness Scale-11; PSQI, Pittsburgh Sleep Quality Index.