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. 2026 May 12;14:152. doi: 10.1186/s40337-026-01594-x

Table 2.

Regression coefficients and standard errors from the mediation model

Antecedent variable Academic burnout (T1) Thinness-oriented disordered eating (T1) Muscularity-oriented disordered eating (T1) Academic performance (T2)
β 95% CI SE β 95% CI SE β 95% CI SE β 95% CI SE
Sex 0.06 −0.04–0.15 0.05 0.13 * 0.05–0.23 0.04 −0.11* −0.21 – −0.01 0.05 −0.03 −0.17–0.11 0.07
Age 0.08 −0.01–0.17 0.04 −0.05 −0.15–0.05 0.05 0.04 −0.06–0.13 0.06 −0.04 −0.21–0.13 0.07
BMI 0.09 −0.001–0.18 0.05 0.15** 0.06–0.25 0.05 0.07 −0.02–0.16 0.05 −0.01 −0.11–0.09 0.05
Problematic TikTok Use (T1) 0.18*** 0.09–0.27 0.05 0.24*** 0.14–0.35 0.05 0.24*** 0.14–0.34 0.05 −0.14** −0.24 – −0.04 0.05
Academic burnout (T1) 0.15** 0.05–0.25 0.05 0.15** 0.05–0.24 0.05 −0.19** −0.30 – −0.09 0.05

Thinness-oriented

disordered eating (T1)

−0.15* −0.27 – −0.03 0.06
Muscularity-oriented disordered eating (T1) −0.13* −0.24 – −0.02 0.06
0.12 0.12 0.11 0.2

CI: confidence interval; SE: standard error; BMI: body mass index. * p < .05, ** p < .01, *** p < .001. T1, time 1; T2, time 2