Table 2.

Partial correlations coefficients (r) among PSQI, STAI and SDS

	PSQI	STAI	SDS
PSQI
STAI	0.428***
SDS	0.381***	0.775***

PSQI Pittsburgh Sleep Quality Index, STAI State-Trait Anxiety Inventory, SDS Self-rating Depression Scale

The model was adjusted for gender, birthplace, grade, major, ethnicity, only child, close relationship, education of close relationship, education of father, education of mother, job of close relationship, job of father, job of mother

Values are bolded if they achieved statistical significance at p ≤ 0.05

*** p < 0.001