TABLE 1—
Regression Results of All Items Served per Week at Full-Intervention, Minimal-Intervention, and Control Cafeterias Before and After the Interventions (Percentage of Total Items Served): Harvard University, Cambridge, MA, 2014
| Comparison | % Change (95% CI) |
| Red label | |
| Full vs control | |
| Difference in immediate change after intervention | 0.73 (–4.25, 5.71) |
| Difference in change in slope after intervention | –0.78 (–2.04, 0.49) |
| Full vs minimal | |
| Difference in immediate change after intervention | 1.72 (–1.16, 4.60) |
| Difference in change in slope after intervention | –0.71 (–1.45, 0.02) |
| Minimal vs control | |
| Difference in immediate change after intervention | –0.63 (–4.92, 3.66) |
| Difference in change in slope after intervention | –0.27 (–1.41, 0.86) |
| Yellow label | |
| Full vs control | |
| Difference in immediate change after intervention | 4.61 (–1.96, 11.17) |
| Difference in change in slope after intervention | –0.06 (–1.74, 1.62) |
| Full vs minimal | |
| Difference in immediate change after intervention | 3.98 (–6.90, 14.87) |
| Difference in change in slope after intervention | –1.76 (–5.72, 2.19) |
| Minimal vs control | |
| Difference in immediate change after intervention | 0.97 (–5.59, 7.54) |
| Difference in change in slope after intervention | 0.62 (–1.07, 2.31) |
| Green label | |
| Full vs control | |
| Difference in immediate change after intervention | –4.13 (–13.42, 5.16) |
| Difference in change in slope after intervention | 1.10 (–1.72, 3.92) |
| Full vs minimal | |
| Difference in immediate change after intervention | –5.09 (–15.56, 5.38) |
| Difference in change in slope after intervention | 1.50 (–1.49, 4.48) |
| Minimal vs control | |
| Difference in immediate change after intervention | –0.34 (–6.08, 5.41) |
| Difference in change in slope after intervention | –0.41 (–1.88, 1.07) |
Note. CI = confidence interval.