Table 3.
Average entrées and share of entrées served with school meal components and total competitive sales per day during the baseline and intervention periods of a study assessing two interventions (Healthy Choices and Healthy Nudging) to increase meal participation in high schools. Average values were computed from school cafeteria register transaction data collected from three Northeast US high schools participating in the study during the 2013–2014 school year. All students in all three schools were eligible for free/reduced-price school meals under the US Department of Agriculture Community Eligibility Provision
| Average number of daily entrées served | 95 % CI | Average number of daily cold entrées served | 95 % CI | Average number of daily hot entrées served | 95 CI | Average share of entrées served with a vegetable daily | 95 % CI | Average share of entrées served with a fruit daily | 95 % CI | Average share entrées served with a milk daily | 95 % CI | Average number of competitive foods sold daily | 95 % CI | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Comparison School | Baseline (n† 112) | 1065·02 | 1048·66, 1081·38 | 324·53 | 311·15, 337·90 | 735·45 | 720·83, 750·06 | 0·12 | 0·10, 0·14 | 0·94 | 0·92, 0·97 | 0·82 | 0·80, 0·84 | 496·67 | 479·93, 513·42 |
| Intervention (n 16) | 963·47 | 919·05, 1007·89 | 286·29 | 251·55, 321·03 | 673·94 | 636·36, 711·52 | 0·09 | 0·04, 0·13 | 0·95 | 0·89, 1·01 | 0·84 | 0·79, 0·89 | 463·65 | 437·32, 489·98 | |
| Healthy Choices School | Baseline (n 91) | 659·90 | 650·24, 669·56 | 242·28 | 234·80, 249·76 | 417·59 | 407·05, 428·13 | 0·10 | 0·08, 0·12 | 0·77 | 0·74, 0·80 | 0·71 | 0·69, 0·73 | –‡ | – |
| Intervention (n 16) | 641·53 | 59·68, 686·38 | 273·29 | 252·99, 293·60 | 368·24 | 331·30, 405·17 | 0·13 | 0·08, 0·18 | 0·70 | 0·63, 0·76 | 0·67 | 0·62, 0·72 | – | – | |
| Healthy Nudging School | Baseline (n 84) | 582·54 | 567·03, 598·04 | 225·27 | 217·01, 233·53 | 357·11 | 343·53, 370·68 | 0·23 | 0·21, 0·25 | 0·87 | 0·84, 0·90 | 0·85 | 0·82. 0·87 | 196·11 | 182·38, 209·84 |
| Intervention (n 15) | 590·63 | 567·92, 613·33 | 239·81 | 217·33, 262·30 | 350·81 | 329·91, 371·71 | 0·24 | 0·19, 0·29 | 0·91 | 0·85, 0·98 | 0·86 | 0·81, 0·92 | 180·12 | 161·15, 199·10 | |
| Total number of days | 332 | 332 | 332 | 332 | 332 | 332 | 225 |
Number of days.
Competitive foods sold at the Healthy Choices School and Comparison School were not compared since these items were completely removed from the Healthy Choices School during the intervention.