Table 2.
Intervention characteristics (Pre-Int: Pre-Intervention; Post-Int: Post-Intervention).
| Site |
|||||||
|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | ||
| Proportion of food items for which energy content is available | 76.1 | 77.2 | 87.8 | 82.6 | 81.1 | 93.9 | |
| Proportion of food items in targeted food categories | 75.2 | 69.4 | 71.8 | 66.1 | 67.4 | 83.1 | |
| Proportion of cooked meals targeted in the intervention | 12.5a | 0 | 15.3 | 41.7 | 40.0 | 25.0 | |
| Proportion of days where cooked meal offering fails study criteriab | Pre-Int. | 31.8 | – | 41.5 | 100 | 100 | 63.8 |
| Post-Int. | 33.3 | – | 0 | 11.4d | 0 | 0 | |
| Mean energy (kcal) per cooked meal sold (s.d.)c | Pre-Int. | 337 (101) | 627 (301) | 475 (166) | 589 (182) | 579(206) | 388 (160) |
| Post-Int. | 342 (107) | 637 (320) | 403 (136) | 424 (163) | 352 (113) | 321 (115) | |
| Number of pre-packaged items identified as targets for intervention | 15 | 29 | 11 | 2 | 17 | 12 | |
| Number of pre-packaged items added (removed) in the intervention | 8 (12) | 29 (29) | 11d (11) | 2d (2) | 15 (17) | 11d (12) | |
| Mean energy (kcal) per pack for pre-packaged items (s.d.) | Pre-Int. | 154 (150) | 130 (84) | 128 (76) | 92 (85) | 135 (80) | 145 (80) |
| Post-Int. | 135 (95) | 95 (75) | 91 (77) | 79 (79) | 111 (73) | 115 (77) | |
| Mean daily energy (kcal) purchased from targeted food categories (s.d.) | Pre-Int. | 201,371 (24,709) | 178,325 (32,790) | 29, 444e (10,000) | 47,948 (7461) | 114,921 (21,577) | 85,638 (14,544) |
| Post-Int. | 207,392 (30,085) | 160,342 (31,044) | 27,437 (4634) | 43,242 (8488) | 85,420 (9224) | 81,524 (12,612) | |
No fixed menus, so this is the proportion of cooked meals that would need to be changed to meet study criteria pre-intervention.
Study criteria for healthier cooked meal offering: Only one less healthy cooked meal offered daily (cutoffs: 300 kcal for a meal served with a side; 500 kcal for a complete meal).
Cooked meal energy totals include sides for some sites but not others, depending on the energy information provided by sites and/or how they record sales of cooked meals and sides, so comparison across sites may not be appropriate.
Delays in being introduced: Site 3: 3 items by 2 weeks; Site 4 (cooked meals): all by 6 days; Site 4 (pre-packaged): 2 items by 3 days; Site 6: 1 item by 1 week.
If the days the site provided free lunches are excluded: 32,068 (6199).