Table 2.
Summary description of overall diet quality index and its component and sub-component scores, age and energy intake according to type of meal usually consumed during school lunch among British adolescents aged 11–18 years (n = 2118) from the National Diet and Nutrition Survey (NDNS) rolling programme, Years 1–8 (2008–2016).
| Dietary quality* | Total sample |
Cooked school meal |
Cold school meal |
Packed lunch (from home) |
Buy lunch from shop/cafe |
Go home |
Do not eat lunch |
||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
n = 2118 |
n = 600 |
n = 272 |
n = 776 |
n = 369 |
n = 59 |
n = 37 |
|||||||||||||||
| Mean | 95% CI | Mean | 95% CI | Mean | 95% CI | Mean | 95% CI | Mean | 95% CI | Mean | 95% CI | Mean | 95% CI | ||||||||
| DQI-A Overall | 21.1 | 20.5 | 21.8 | 21.8 | 20.6 | 23.0 | 20.5 | 18.8 | 22.2 | 23.9 | 22.8 | 24.9 | 14.8 | 13.2 | 16.3 | 21.5 | 17.0 | 26.0 | 18.9 | 12.9 | 25.0 |
| (DQc) | −4.3 | −5.7 | −3.0 | −2.4 | −4.9 | 0.1 | −5.3 | −9.1 | −1.6 | −0.1 | −2.3 | 2.1 | −15.9 | −19.2 | −12.6 | −3.1 | −13.0 | 6.9 | −4.2 | 17.1 | 8.6 |
| (DDc) | 44.5 | 44.0 | 45.0 | 44.7 | 43.7 | 45.7 | 43.9 | 42.6 | 45.3 | 46.5 | 45.6 | 47.5 | 40.6 | 39.3 | 41.8 | 45.7 | 42.3 | 49.1 | 39.2 | 34.8 | 43.7 |
| (DEc) | 23.2 | 22.8 | 23.5 | 23.2 | 22.5 | 23.8 | 22.8 | 21.9 | 23.6 | 25.2 | 24.6 | 25.7 | 19.6 | 18.8 | 20.4 | 21.9 | 19.7 | 24.0 | 21.8 | 19.0 | 24.6 |
| (DAx) | 53.5 | 53.0 | 53.9 | 53.7 | 52.8 | 54.5 | 53.0 | 51.8 | 54.2 | 55.6 | 54.8 | 56.3 | 49.8 | 48.8 | 50.9 | 52.3 | 49.5 | 55.1 | 48.5 | 45.4 | 51.7 |
| (DEx) | 20.6 | 20.3 | 20.9 | 20.8 | 20.2 | 21.3 | 20.6 | 19.7 | 21.5 | 20.3 | 19.8 | 20.8 | 21.1 | 20.4 | 21.9 | 21.0 | 19.1 | 22.8 | 17.9 | 15.8 | 20.1 |
| Age (years) | 14.5 | 14.4 | 14.6 | 13.8 | 13.7 | 14.0 | 14.3 | 14.1 | 14.5 | 14.3 | 14.2 | 14.5 | 15.7 | 15.5 | 15.9 | 15.9 | 15.5 | 16.4 | 15.4 | 14.9 | 15.9 |
| Energy (KJ) | 7370.3 | 7278.6 | 7461.9 | 7493.0 | 7321.1 | 7665.0 | 7348.8 | 7080.8 | 7616.8 | 7303.7 | 7161.0 | 7446.4 | 7396.8 | 7153.4 | 7640.2 | 7368.9 | 6795.9 | 7941.9 | 6783.4 | 6223.9 | 7342.9 |
CI, Confidence Interval; DQI-A, Diet Quality Index for Adolescents; DQc, Diet quality component; DDc, Diet diversity component; DEc, Diet equilibrium component; DAx, Diet adequacy sub-component; DEx, Diet excess sub-component.
*Scores presented as %.