Table 2.

The results of Descriptive statistics and Correlations among main variables.

	Mean	S.D.	1	2	3	4
1. Academic stress	3.33	0.81	1
2. Anxiety	2.76	1.01	0.486 **	1
3. School burnout	2.86	1.10	0.652 **	0.505 **	1
4. Sleep quality	1.73	0.55	0.503 **	0.479 **	0.511 **	1

** p < 0.01.