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Table 5 Linear regression model on depressive symptoms at T4

From: A longitudinal study of changes in smart phone addiction and depressive symptoms and potential risk factors among Chinese college students

Variables Block 1 Block 2 Block 3 Block 4
β t β t β t β t
Quarantine −.01 −.14 .00 .00 .00 −.04 −.02 −.32
Lockdown .09 1.27 .00 −.01 −.04 −.71 −.05 −.78
Boredom .31 4.55*** .24 4.13*** .19 2.95** .14 2.20*
Emotional loneliness .29 4.28*** .25 4.18*** .17 2.65** .13 2.09*
Social loneliness .20 2.87** .15 2.43* .14 2.42* .15 2.64**
R2    .40 .42
Df    7/193 8/193
F    17.68*** 16.98***
  1. SPA Smart phone addiction; Block 1: simple analyses; Block 2: simple analyses adjusting for gender and depressive symptoms at T3; Block 3: multiple regression analysis with multiple independent variables (all the COVID-related factors and the level of depressive symptoms at T3) being included; Block 4: multiple regression analysis with multiple independent variables (all the COVID-related factors, the level of depressive symptoms at T3 and SPA at T4) being included; *p < .05; **p < .01; ***p < .001