Table 5.
Regression coefficients and percentage changes for portion size intervention variables in analyses of secondary outcomes per day
| Analysis | Variable | Purchasing from non-intervention categories. Coefficients (95% CIs)a |
Purchasing from non-intervention categories. Percentage change (%) (95% CIs)a |
pa | Total purchasing from all categories. Coefficients (95% CIs)a |
Total purchasing from all categories. Percentage change (%) (95% CIs)a |
pa | |
|---|---|---|---|---|---|---|---|---|
| Overall | Intervention period | 0.071 (0.010, 0.132) | 7.321 (0.961, 14.083) | 0.067 | 0.004 (− 0.051, 0.059) | 0.408 (− 4.992, 6.116) | 0.890 | |
| By site | Intervention period | Site 1 | 0.088 (−0.017,0.194) | 9.242 (− 1.664, 21.358) | 0.154 | − 0.013 (− 0.110,0.083) | −1.338 (− 10.418, 8.663) | 0.794 |
| Site 2 | 0.089 (−0.009, 0.186) | 9.256 (− 0.904, 20.456) | 0.129 | 0.035 (− 0.054, 0.123) | 3.513 (− 5.227, 13.060) | 0.474 | ||
| Site 3 | 0.111 (0.016, 0.205) | 11.701 (1.631, 22.770) | 0.064 | 0.060 (− 0.025, 0.146) | 6.231 (− 2.465, 15.702) | 0.218 | ||
| Site 4 | 0.028 (− 0.067, 0.122) | 2.816 (− 6.455, 13.005) | 0.587 | −0.015 (− 0.100, 0.071) | −1.479 (− 9.546, 7.307) | 0.745 | ||
| Site 5 | 0.111 (0.016, 0.205) | 11.707 (1.608, 22.809) | 0.065 | 0.008 (− 0.077, 0.094) | 0.824 (− 7.451, 9.839) | 0.858 | ||
| Site 6 | 0.002 (− 0.095, 0.099) | 0.226 (−9.032, 10.426) | 0.965 | −0.054 (− 0.142, 0.034) | −5.257 (− 13.204, 3.418) | 0.275 | ||
a As the p-values (the more robust Kenward-Roger corrected) and CIs (Wald) presented here have been calculated using different assumptions, there is not always an equivalence of interpretation between the 95% confidence intervals and significant p-values