Table 2.

Bivariate correlation analysis.

	Occupational stressors			PsyCap	Insomnia
	DL	PSD	SS
DL	1
PSD	−0.06	1
SS	0.42**	−0.13**	1
PsyCap	0.33**	−0.11**	0.39**	1
Insomnia	−0.25**	0.15**	−0.31**	−0.40**	1
Mean	80.27	41.37	33.17	101.59	7.70
Standard deviation	13.23	5.88	4.97	17.02	4.62

DL stands for decision latitude; PSD stands for psychological job demand; PsyCap stands for Psychological Capital; SS stands for social support.

^**p < 0.01.