Table 2.
Change in salt density, total salt and total food weight between the initial and final shopping baskets for each intervention group (using independent t-tests) and the effect of the intervention groups on these changes.
| LS (n = 476) |
LS + MLS (n = 471) |
Difference between intervention groups LS + MLS v LS |
P = value | Difference between intervention groups LS + MLS v LS |
P = value | |
|---|---|---|---|---|---|---|
| Difference Final-initial (95% C.I) |
Difference Final-initial (95% C.I) |
Unadjusted (95% C.I) | adjusted b (95% C.I) | |||
| Total basket salt density (g/100g) (weighted) | −0.04 (−0.04, −0.03)a | −0.13 (−0.14, −0.11)a | −0.09 (−0.10, −0.07) | <0.001 | −0.09 (−0.11, −0.08) | <0.001 |
| % difference | −3.76 (-4.19, -3.32)a | −12.65 (-13.90, -11.39)a | −8.89 (-10.22, -7.56) | <0.001 | −8.94 (-10.27, -7.62) | <0.001 |
| Total basket salt content (g/MJ) (weighted) | −0.04 (−0.05, −0.04)a | −0.11 (−0.13, −.10)a | −0.07 (−0.09, −0.05) | <0.001 | −0.07 (−0.09, −0.06) | <0.001 |
| % difference | −4.45 (-5.17, -3.73)a | −12.25 (-13.58, -10.92)a | −7.80 (-9.30, -6.29) | <0.001 | −8.04 (-9.53, -6.55) | <0.001 |
| Total salt (g) | −2.93 (−3.43, −2.43)a | −7.97 (−8.78, −7.17)a | −5.04 (−5.99, −4.10) | <0.001 | −5.17 (−6.10, −4.23) | <0.001 |
| Total food weight (kg) | −0.07 (−0.10, −0.04)a | −0.21 (−0.27, −0.16)a | −0.15 (−0.20, −0.08) | <0.001 | −0.15 (−0.21, −0.09) | <0.001 |
a
Significant at p < 0.05.
b
Calculated using linear regression adjusted for: health considered important; price considered important; shopping habits considered important; family likes/dislikes considered important; and baseline shopping basket salt content.