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. 2014 Nov 5;14:1143. doi: 10.1186/1471-2458-14-1143

Figure 1.

Figure 1

Associations [ B coefficients ( SE )] between physical activity, perceived stress, sleep satisfaction, and problematic internet use. Footnote: Sobel test was used (Z = −4.315, p < 0.001).*p < 0.05, **p < 0.001.