Table 3. Mean scores of the sociodemographic and occupational variables with the domains of the Pittsburgh Sleep Quality Index of Nursing professionals (n=196). Francisco Beltrão, PR, Brazil, 2018.

		Subjective quality		Sleep latency		Sleep duration		Usual effectiveness		Sleep Disorders		Medication use		Daytime dysfunction
Variable	Description	Mean Score	p-value	Mean Score	p-value	Mean Score	p-value	Mean Score	p-value	Mean Score	p-value	Mean Score	p-value	Mean Score	p-value
Hospital	Public	103.9	0.030	103.3	0.080	100.1	0.550	96.3	0.370	105.4	<0.001	103.5	0.030	104.9	0.010
	Private	87.5		88.8		95.3		102.9		84.6		88.5		85.5
Gender	Female	98.9	0.790	98.9	0.750	97.4	0.450	98.8	0.810	99.9	0.290	100.9	0.040	98.9	0.800
	Male	95.8		95.2		106.5		96.2		88.1		80.6		95.8
Skin color	White	96.9	0.370	97.4	0.540	98.6	0.950	102.7	0.010	97.3	0.510	96.7	0.270	99.6	0.540
	Black	105.2		103.3		98.1		81.2		103.4		106.1		93.7
Number of jobs	Only 1	100.5	0.340	104.3	<0.001	100.6	0.320	94.6	0.040	99.7	0.540	102.3	0.040	96.8	0.430
	2 or more	92.2		80.1		91.7		110.9		94.6		86.3		103.9
Working Hours	Up to 40	98.7	0.890	103.4	0.140	98	0.880	92.2	0.030	98.9	0.890	103	0.1270	94.8	0.270
	More than 40	97.9		91.9		99.2		107		98		92.5		103.4
Work Shift	Day	97.8	0.790	102.5	0.200	108	<0.001	100.5	0.480	97.3	0.710	101.4	0.280	93.4	0.090
	Night	99.7		92.3		83.5		95.4		100.4		93.9		106.6
Time working (years)	Up to 6	82.7	<0.001	85.6	0.010	99.3	0.870	104.8	0.190	81.7	<0.001	84	<0.001	90.5	0.130
	Over 6	106.7		105.2		98.1		95.2		107.2		106		102.7