Table 4.
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 girls, Cambridgeshire, UK, 2006
| Girls eating packed lunch (n 363) | Girls eating school lunch (n 350) | ||||||||||||||||||||
| Total daily intake | % contribution from lunch | Total daily intake | % contribution from lunch | ||||||||||||||||||
| Mean | sd | Mean | sd | Mean | sd | Mean | sd | P* | |||||||||||||
| Energy (MJ) | 7·2 | 2·4 | 25 | 13 | 7·2 | 2·7 | 29 | 14 | 0·002 | ||||||||||||
| Protein (g) | 58·4 | 21·6 | 24 | 17 | 58·4 | 24·5 | 28 | 18 | 0·005 | ||||||||||||
| Fat (g) | 67·4 | 29·8 | 27 | 17 | 68·4 | 31·0 | 30 | 20 | 0·017 | ||||||||||||
| SFA (g) | 26·2 | 12·3 | 20 | 19 | 26·8 | 13·2 | 29 | 21 | <0·001 | ||||||||||||
| Carbohydrate (g) | 232·4 | 85·2 | 25 | 13 | 227·0 | 85·1 | 29 | 19 | 0·002 | ||||||||||||
| Starch (g) | 127·6 | 50·6 | 18 | 16 | 126·6 | 48·2 | 33 | 19 | <0·001 | ||||||||||||
| Total sugars (g) | 102·5 | 51·6 | 23 | 17 | 98·4 | 53·4 | 24 | 20 | NS | ||||||||||||
| Total NSP (g) | 12·0 | 5·4 | 26 | 16 | 11·5 | 5·7 | 31 | 19 | <0·001 | ||||||||||||
| Na (mg) | 2296 | 1002 | 19 | 18 | 2280 | 1356 | 30 | 19 | <0·001 | ||||||||||||
| Ca (mg) | 848 | 380 | 27 | 18 | 865 | 1400 | 27 | 18 | NS | ||||||||||||
| Fe (mg) | 9·6 | 4·3 | 22 | 14 | 9·3 | 4·5 | 25 | 16 | 0·002 | ||||||||||||
| Carotene equiv. (μg) | 1572 | 1758 | 13 | 21 | 1500 | 2074 | 26 | 29 | <0·001 | ||||||||||||
| Folate (μg) | 208 | 94 | 23 | 16 | 199 | 98 | 26 | 18 | 0·008 | ||||||||||||
| Vitamin C (mg) | 100·4 | 90·7 | 18 | 23 | 86·3 | 77·5 | 24 | 29 | 0·001 | ||||||||||||
*P, significance of the difference between the percentage contribution of packed lunch v. school lunch.