Table 3.
Primary analysis of total daily energy purchased
| Fixed effects | Calories M (SD) |
95%CI | p | Pre-Intervention Mean Daily Calories | % Change Post-Intervention | 95%CI |
|---|---|---|---|---|---|---|
| (Intercept) | 150637.1 (28779.4) | (94230.4, 207043.7) | < 0.0001 | |||
| Site 3 Till Changeb | 71573.5 (11394.4) | (49240.8, 93906.1) | < 0.0001 | |||
| Site 3End Outliersb | 88118.6 (11036.5) | (66487.5, 109749.6) | < 0.0001 | |||
| Site 3Start Outliersb | 75880.6 (12624.4) | (51137.2, 100624.0) | < 0.0001 | |||
| Site 5 Outliersb | 90157.4 (10249.5) | (70068.7, 110246.1) | < 0.0001 | |||
| Site 1 Outliersb | 94505.4 (14167.9) | (66736.9, 122273.9) | < 0.0001 | |||
| Week day (Ref = Monday) | ||||||
| Tuesday | 7960.1 (3177.8) | (1731.8, 14188.4) | 0.0150 | |||
| Wednesday | 21430.7 (3125.8) | (15304.4, 27557.1) | < 0.0001 | |||
| Thursday | 12899.7 (3148.5) | (6728.8, 19070.7) | 0.0001 | |||
| Friday | − 9580.2 (3807.9) | (−17043.5, − 2116.8) | 0.0146 | |||
| Transactions | 70.1 (10.1) | (50.3, 89.8) | < 0.0001 | |||
| Interventiona | ||||||
| Site1 | −24381.2 (11893.4) | (−47691.7, − 1070.6) | 0.0448 | 370114.3 | −6.6% | (−12.9%, −0.3%) |
| Site2 | 1742.0 (10962.2) | (−19743.5, 23227.4) | 0.8743 | 150105.7 | 1.2% | (−13.2%, 15.5%) |
| Site3 | 2737.8 (10968.1) | (−18759.3, 24234.9) | 0.8038 | 256231.0 | 1.1% | (−7.3%, 9.5%) |
| Site4 | 945.7 (10962.4) | (−20540.1, 22431.5) | 0.9315 | 200117.1 | 0.5% | (−10.3%, 11.2%) |
| Site5 | 12407.6 (10962.0) | (− 9077.6, 33892.7) | 0.2623 | 131628.9 | 9.4% | (−6.9%, 25.7%) |
| Site6 | 14836.6 (10841.4) | (− 6412.1, 36085.3) | 0.1763 | 174700.4 | 8.5% | (−3.7%, 20.7%) |
Note. P-values are based on the Kenward-Roger correction to DF. aSite-specific intervention effects were obtained by refitting the model with a different reference category. bDummy variables for outliers