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Table 7 Analysis of mediating effect

From: The effect of physical activity on anxiety through sleep quality among Chinese high school students: evidence from cross-sectional study and longitudinal study

Regression equation

Overall fitting index

Predictive variable

Result variable

R

R2

SE

t

β

Physical activities

Anxiety

0.521

0.271

0.534

-5.39**

-2.879

Physical activities

Sleep quality

0.625

0.391

0.417

-7.09**

-2.956

Physical activities

Anxiety

0.632

0.400

0.625

-2.06*

-1.287

Sleep quality

0.132

4.07**

0.538