Table 2.

Means, standard deviations, and correlations of the HLM analysis variables

Wave	Mean	SD	1	2	3	4	5
1. Anxiety Wave 1	0.86	0.67
2. Anxiety Wave 2	0.89	0.64	0.44**
3. Internet Addiction 1	29.54	17.55	0.39**	2.16**
4. Internet Addiction 2	24.47	17.64	0.14**	0.24**	0.43**
5. Classroom EXT Wave 1	2.92	3.64	0.11	0.12	−0.33	−0.10*
6. Classroom EXT Wave 2	2.87	3.53	0.13	0.09*	−0.32	−0.14	−0.22**

*p < .05. **p < .01.