Relationship of depression and sleep quality, diseases and general characteristics

Table 2 Relationship of Pittsburgh sleep quality index components and depression

PSQI index	Score	Without (n = 190)		With (n = 221)		Mild (n = 139)		Moderate (n = 49)		Moderately severe (n = 22)		Severe (n = 11)
		n	Percent	n	Percent	n	Percent	n	Percent	n	Percent	n	Percent
Subjective sleep quality	0	0	0.00	3	1.36	2	1.44	1	2.04	0	0.00	0	0.00
	1	87	45.79	27	12.22	22	15.83	4	8.16	1	4.55	0	0.00
	2	94	49.47	146	66.06	94	67.63	33	67.35	11	50.00	8	72.73
	3	9	4.74	45	20.36	21	15.11	11	22.45	10	45.45	3	27.27
Sleep latency	0	9	4.74	8	3.62	3	2.16	4	8.16	1	4.55	0	0.00
	1	52	27.37	31	14.03	23	16.55	5	10.20	3	13.64	0	0.00
	2	77	40.53	69	31.22	45	32.37	13	26.53	8	36.36	3	27.27
	3	52	27.37	113	51.13	68	48.92	27	55.10	10	45.45	8	72.73
Sleep duration	0	46	24.21	39	17.65	27	19.42	6	12.24	4	18.18	2	18.18
	1	62	32.63	68	30.77	42	30.22	19	38.78	4	18.18	3	27.27
	2	59	31.05	60	27.15	39	28.06	13	26.53	8	36.36	0	0.00
	3	23	12.11	54	24.43	31	22.30	11	22.45	6	27.27	6	54.55
Habitual sleep efficiency	0	64	33.68	48	21.72	34	24.46	10	20.41	3	13.64	1	9.09
	1	44	23.16	42	19.00	27	19.42	10	20.41	4	18.18	1	9.09
	2	41	21.58	48	21.72	28	20.14	12	24.49	4	18.18	4	36.36
	3	41	21.58	83	37.56	50	35.97	17	34.69	11	50.00	5	45.45
Sleep disturbances	0	3	1.58	2	0.90	1	0.72	1	2.04	0	0.00	0	0.00
	1	154	81.05	135	61.09	99	71.22	25	51.02	8	36.36	3	27.27
	2	32	16.84	79	35.75	37	26.62	22	44.90	13	59.09	7	63.64
	3	1	0.53	5	2.26	2	1.44	1	2.04	1	4.55	1	9.09
Use of sleeping medications	0	85	44.74	90	40.72	63	45.32	19	38.78	6	27.27	2	18.18
	1	28	14.74	15	6.79	9	6.47	4	8.16	1	4.55	1	9.09
	2	43	22.63	40	18.10	32	23.02	8	16.33	0	0.00	0	0.00
	3	34	17.89	76	34.39	35	25.18	18	36.73	15	68.18	8	72.73
Daytime dysfunction	0	161	84.74	94	42.53	71	51.08	18	36.73	5	22.73	0	0.00
	1	27	14.21	84	38.01	53	38.13	18	36.73	9	40.91	4	36.36
	2	2	1.05	37	16.74	14	10.07	12	24.49	6	27.27	5	45.45
	3	0	0.00	6	2.71	1	0.72	1	2.04	2	9.09	2	18.18

PSQI: Pittsburgh sleep quality index.