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Table 4 Analyses of potential mediators of the association between TV viewing (T1) and ED drink consumption (T2).

From: Mediators of longitudinal associations between television viewing and eating behaviours in adolescents

  τ' SE τ - τ' SE t R 2 P-value
τ (mediator-unadjusted coefficient regressing ED drink consumption at T2 on TV viewing at T1) = 0.20 (SE = 0.07)**        
Potential mediators        
Eats snacks while watching TV 0.14* 0.06 0.07 0.03 4.14 0.05 <0.001
Value of TV viewing 0.07 ns 0.06 0.13 0.04 6.17 0.06 <0.001
  1. τ, unstandardised regression coefficient for association between TV viewing and ED drink consumption, adjusting for confounders (gender and year level) and accounting for potential clustering by school (unit of recruitment) using the 'cluster' command, before adjustment for mediator; τ', unstandardised regression coefficient for association between TV viewing and ED drink consumption, adjusting for confounders (gender and year level), and mediator; τ- τ', difference between the two regression coefficients, which when divided by its standard error, can be compared against a t-distribution with n - 2 degrees of freedom; SE, standard error; ns, not significant.
  2. *p < 0.05, **p < 0.01, ***p < 0.001