Table 3.

Mean scores of GAS, SLS, RSES, and MSPSS in 2013 and 2015

Scales	2013		2015
	Mean	SD	Mean	SD
GAS-21	56.45	20.14	51.93	17.48
SLS	22.40	6.35	20.37	6.97
RSES	31.62	5.59	26.45	2.39
MSPSS	57.33	17.77	56.75	17.99
Family	20.63	6.38	20.28	7.09
Friends	20.66	6.82	19.90	6.86
Other	16.03	9.40	16.56	8.65

GAS: Game addiction Scale, SLS: Satisfaction with Life Scale, RSES: Rosenberg Self-Esteem Scale, MSPSS: Multi-dimensional Scale of Perceived Social Support, SD: standard deviation