Table 3.
Total daily intakes of energy and nutrients (mean, sd), and percentage contribution (mean, sd) to total intake, of school and packed lunches eaten by 14–15-year-old boys, Cambridgeshire, UK, 2006
| Boys eating packed lunch (n 318) | Boys eating school lunch (n 234) | ||||||||||||||||||||
| Total daily intake | % contribution from lunch | Total daily intake | % contribution from lunch | ||||||||||||||||||
| Mean | sd | Mean | sd | Mean | sd | Mean | sd | P* | |||||||||||||
| Energy (MJ) | 8·9 | 2·9 | 27 | 13 | 8·7 | 2·7 | 29 | 14 | 0·057 | ||||||||||||
| Protein (g) | 72·3 | 26·2 | 25 | 15 | 73·0 | 26·4 | 28 | 17 | 0·028 | ||||||||||||
| Fat (g) | 84·8 | 35·8 | 28 | 17 | 81·7 | 32·7 | 31 | 19 | NS | ||||||||||||
| SFA (g) | 33·8 | 16·3 | 24 | 19 | 32·1 | 13·8 | 29 | 20 | NS | ||||||||||||
| Carbohydrate (g) | 280·0 | 95·6 | 26 | 13 | 274·0 | 87·9 | 28 | 13 | NS | ||||||||||||
| Starch (g) | 156·0 | 56·2 | 22 | 17 | 153·6 | 53·7 | 30 | 16 | NS | ||||||||||||
| Total sugars (g) | 122·2 | 58·9 | 26 | 19 | 118·6 | 60·4 | 24 | 18 | <0·001 | ||||||||||||
| Total NSP (g) | 14·0 | 6·2 | 27 | 16 | 12·7 | 5·3 | 26 | 17 | NS | ||||||||||||
| Na (mg) | 2844 | 1178 | 25 | 21 | 2823 | 1119 | 31 | 18 | NS | ||||||||||||
| Ca (mg) | 1028 | 491 | 26 | 17 | 954 | 474 | 24 | 17 | <0·001 | ||||||||||||
| Fe (mg) | 11·8 | 4·6 | 22 | 13 | 11·7 | 4·8 | 23 | 13 | NS | ||||||||||||
| Carotene equiv. (μg) | 1707 | 1989 | 16 | 23 | 1623 | 1778 | 25 | 27 | NS | ||||||||||||
| Folate (μg) | 244 | 111 | 21 | 15 | 252 | 111 | 23 | 15 | NS | ||||||||||||
| Vitamin C (mg) | 112·4 | 100·8 | 24 | 27 | 115·4 | 109·0 | 21 | 25 | NS | ||||||||||||
*P, significance of the difference between the percentage contribution of packed lunch v. school lunch.