Table 3.
Mediation analyses displaying associations between policy implementation (2017 vs. 2016), advertising exposure, and consumption of overall high-in foods (n = 679; 1,358 observations)
| a-coefficient2 | b-coefficient | c’-coefficient Direct Effect |
ab Indirect (mediation) Effect |
Proportion of total variance accounted for by ab path 5 | |||||
|---|---|---|---|---|---|---|---|---|---|
| (policy→ ads) | (ads→ intake) | (policy→ intake) | |||||||
| β3 | (99 % CI) | β | (99 % CI) | β | (99 % CI) | β | (99 % CI) | ||
| Absolute quantity (kcal)1,3 | |||||||||
| Any “High-in” ad | -4.6* | (-5.7, -3.5) | 4 | (-2, 10) | -37 | (-135, 61) | -16 | (-44, 12) | 30.4 % |
| High calorie | -2.3* | (-2.8, -1.8) | 8 | (-6, 22) | -35 | (-134, 64) | -18 | (-50, 14) | 34.2 % |
| High sugar | -3.0* | (-3.7, -2.3) | 5 | (-5, 14) | -39 | (-137, 59) | -14 | (-42, 15) | 26.1 % |
| High fat | -1.3* | (-1.6, -1.0) | 16 | (-14, 46) | -32 | (-133, 70) | -21 | (-61, 18) | 39.9 % |
| High sodium | -0.2* | (-0.3, 0.0) | 31 | (-18, 79) | -48 | (-142, 46) | -5 | (-14, 4) | 9.4 % |
| Energy adjusted (% kcal)1,4 | |||||||||
| Any “High-in” ad | -4.6* | (-5.7, -3.5) | 0.0 | (-0.2, 0.3) | -3.6 | (-7.4, 0.3) | -0.1 | (-1.2, 1.0) | 3.0 % |
| High calorie | -2.3* | (-2.8, -1.8) | 0.1 | (-0.5, 0.6) | -3.5 | (-7.4, 0.4) | -0.2 | (-1.4, 1.1) | 4.9 % |
| High sugar | -3.0* | (-3.7, -2.3) | 0.0 | (-0.4, 0.4) | -3.7 | (-7.5, 0.2) | 0.0 | (-1.1, 1.1) | 0.1 % |
| High Fat | -1.3* | (-1.6, -1.0) | 0.1 | (-0.9, 1.1) | -3.6 | (-7.5, 0.4) | -0.1 | (-1.4, 1.2) | 3.0 % |
| High sodium | -0.2* | (-0.3, 0.0) | 0.4 | (-1.5, 2.3) | -3.6 | (-7.3, 0.1) | -0.1 | (-0.4, 0.3) | 1.7 % |
1Analyses adjusted for child’s sex and age, mother’s education level, marital state, home ownership, and day of recall
2 Expressed in minutes of advertising per week (a-coefficient reflects policy effect on advertising)
3 Total effect of policy on consumption of “high-in” products in kcal = -53 kcal [99CI: -147, 41] p = 0.146
4 Total effect of policy on energy adjusted consumption of high-in products = -3.7 % kcal [99CI: -7.4, 0.0] p = 0.011
5 ab/[(ab) + c’] *100
*p < 0.01.