Social relational quality and ethical climate as the predictors of sleep quality in employees of the operating room: a hierarchical linear regression analysis

Table 4 Hierarchical linear regression analysis used to determine the predictor of sleep quality in operating room employees

Model^a		Standardized Coefficients	p-value	95.0% CI^b for B	R	R²	ΔR2	F-change, p-value	Collinearity Statistics
Model^a		Beta	p-value	95.0% CI^b for B	R	R²	ΔR2	F-change, p-value	VIF
1	(Constant)		< 0.001	7.31 to 11.28	0.30	0.09
	Work experience ^c	− 0.22	0.02	− 0.18 to − 0.01					1.02
	Profession	− 0.24	0.01	-2.16 to − 0.30					1.02
2	(Constant)		< 0.001	10.46 to 22.94	0.38	0.14	0.05	6.13, 0.01
	Work experience ^c	− 0.17	0.06	− 0.16 to 0.004					1.06
	Profession	− 0.24	0.01	-2.11 to − 0.29					1.02
	Social relational quality	− 0.23	0.01	-0.24 to − 0.02					1.03
3	(Constant)		< 0.001	11.11 to 24.03	0.39	0.15	0.009	1.05, 0.30
	Work experience ^c	− 0.17	0.07	− 0.16 to 0.007					1.06
	Profession	− 0.22	0.02	-2.03 to − 0.17					1.06
	Social relational quality	− 0.20	0.03	-0.23 to − 0.007					1.12
	Ethical climate	− 0.09	0.30	-1.64 to 0.52					1.13

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