Table 2.

Standardized Path Coefficients Between the Variables

Direct Effect to
From	Sleep Disturbance (PSQI)	PPSR	%Productivity Loss (WLQ)
Job stressors	0.198***	0.340***	0.122***
PPSR			0.383***
Social support	0.220***	0.124***	0.01
PSQI		0.438***	0.162***
Indirect effect to
	Sleep disturbance (PSQI)	PPSR	%productivity loss (WLQ)
Job stressors	Via PPSR		0.130***
	Via PSQI	0.087***	0.032***
	Via PSQI +PPSR		0.033***
	Total indirect effect		0.195***
Social support	Via PPSR		0.048***
	Via PSQI	0.096***	0.036***
	Via PSQI +PPSR		0.037***
	Total indirect effect		0.120***
PSQI	Via PPSR		0.167***
Total effect to
	Sleep disturbance (PSQI)	PPSR	%productivity loss (WLQ)
Job stressors		0.427***	0.317***
Social support		0.221***	0.130***
PSQI			0.330***

Note: ***p < 0.001.

Abbreviations: PPSR, psychological and physical stress response; PSQI, Pittsburgh Sleep Quality Index; WLQ, Work Limitations Questionnaire.