Table 4.
Regression (clustered) analysis between Diet quality index and its components and subcomponents and type of lunch consumed on a school day for younger adolescents aged 11–14 years from the NDNS rolling programme (Years 1–8).
| Adjusted* analysis | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cooked school meals as reference group | Cold school meal |
Packed lunch (from home) |
Buy lunch from shop/cafe |
Lunch at home |
Do not eat lunch |
|||||||||||||||
| B | 95% CI | P | B | 95% CI | P | B | 95% CI | P | B | 95% CI | P | B | 95% CI | P | ||||||
| DQI-A % | −1.7 | −4.4 | 1.1 | 0.2 | −0.8 | −2.9 | 1.3 | 0.46 | −6.6 | −10.2 | −3.1 | <0.01 | −5.1 | −16.9 | 6.7 | 0.4 | −0.5 | −12.0 | 11.0 | 0.9 |
| DQc % | −4.9 | −10.7 | 0.9 | 0.1 | −4.3 | −8.8 | 0.1 | 0.1 | −13.0 | −20.6 | −5.4 | <0.01 | −12.2 | −33.9 | 9.5 | 0.3 | −1.8 | −23.4 | 19.8 | 0.87 |
| DDc % | −0.1 | −2.4 | 2.2 | 0.9 | 0.9 | −0.8 | 2.6 | 0.30 | −4.2 | −7.2 | −1.2 | <0.01 | −2.5 | −11.7 | 6.7 | 0.6 | −0.1 | −9.5 | 9.4 | 0.99 |
| DEc % | 0.1 | −1.4 | 1.6 | 0.9 | 1.0 | −0.1 | 2.1 | 0.1 | −2.8 | −4.8 | −0.8 | 0.01 | −0.8 | −7.4 | 5.8 | 0.8 | 0.4 | −5.9 | 6.6 | 0.9 |
| DAx % | 0.8 | −1.1 | 2.7 | 0.4 | 2.2 | 0.8 | 3.6 | <0.01 | −2.5 | −4.9 | −0.1 | <0.01 | −0.6 | −8.2 | 7.0 | 0.9 | 0.6 | −6.4 | 7.6 | 0.87 |
| DEx % | 0.6 | −0.6 | 1.8 | 0.4 | 0.8 | −0.1 | 1.6 | 0.1 | 0.8 | −0.8 | 2.3 | 0.3 | 0.3 | −4.0 | 4.6 | 0.9 | 0.1 | −2.7 | 2.9 | 0.94 |
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
*Adjusted for gender, region, energy under-reporting and equivalised household income.