Table 3 Mediation analyses: a mediating role of child impulsivity on parent impulsivity scores and child body mass index z-scores

Total sample

A path

B path

β = 0.54, SE = 0.13, t = 4.06, p < 0.001

β = 0.05, SE = 0.11, t = 0.47, p = 0.64

Direct effect (C’ path)

β = 0.40, SE = 0.27, t = 1.50, p = 0.13

Indirect effect (a x b)

β = 0.02, boot SE = 0.06, CI SE = −0.09 to 0.15

Fathers

A path

β = 0.27, SE = 0.17, t = 1.55, p = 0.12

B path

β = 0.08, SE = 0.16, t = 0.51, p = 0.61

Direct effect (C’ path)

β = 0.19, SE = 0.36, t = 0.52, p = 0.61

Indirect effect (a × b)

β = 0.02, boot SE = 0.05, CI SE = −0.04 to 0.20

Mothers

A path

β = 0.99, SE = 0.20, t = 4.96, p < 0.001

B path

β = −0.01, SE = 0.17, t = −0.09, p = 0.93

Direct effect (C’ path)

β = 0.71, SE = 0.42, t = 1.70, p = 0.09*

Indirect effect (a × b)

β = −0.01, boot SE = 0.16, CI SE = −0.37 to 0.28

Son

A path

β = 0.64, SE = 0.18, t = 3.63, p < 0.001

B path

β = −0.08, SE = 0.17, t = −0.49, p = 0.62

Direct effect (C’ path)

β = 0.09, SE = 0.39, t = 0.24, p = 0.81

Indirect effect (a × b)

β = −0.05, boot SE = 0.10, CI SE = −0.30 to 0.12

Daughter

A path

β = 0.44, SE = 0.19, t = 2.26, p = 0.03

B path

β = 0.21, SE = 0.15, t = 1.38, p = 0.17

Direct effect (C’ path)

β = 0.74, SE = 0.36, t = 2.07, p = 0.04

Indirect effect (a × b)

β = 0.09, boot SE = 0.08, CI SE = −0.02 to 0.32