Table 2.
Mean scores of overall diet quality index and its components and sub-components (expressed as percentage) across the three or four days of diary records among British adolescents aged 11–18 years (n 2045) from the National Diet and Nutrition Survey (NDNS) rolling programme, Years 1–6 (2008–2014)
| Total number=8145 | Overall diet quality/component score (mean of all days recorded) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Day 1 (n 2045) | Day 2 (n 2045) | Day 3 (n 2045) | Day 4 (n 2010) | ||||||
| Mean | 95 % CI | Mean | 95 % CI | Mean | 95 % CI | Mean | 95 % CI | ||
| DQI-A% | 21·2 | 20·4, 22·0 | 20·6 | 19·8, 21·4 | 19·9 | 19·0, 20·7 | 20·0 | 19·1, 20·8 | 20·4 |
| DQc% | −6·4 | −8·1, −4·7 | −6·0 | −7·7, −4·3 | −6·4 | −8·2, −4·7 | −6·3 | −8·1, −4·5 | −6·3 |
| DDc% | 46·3 | 45·6, 47·1 | 44·7 | 43·9, 45·5 | 43·5 | 42·7, 44·3 | 43·8 | 43·0, 44·6 | 44·6 |
| DEc% | 23·7 | 23·2, 24·2 | 23·0 | 22·5, 23·5 | 22·5 | 22·0, 23·0 | 22·5 | 21·9, 23·0 | 22·9 |
| DAx% | 55·5 | 54·9, 56·1 | 53·8 | 53·2, 54·4 | 52·8 | 52·2, 53·4 | 52·2 | 51·5, 52·8 | 53·6 |
| DEx% | 21·7 | 21·3, 22·1 | 21·0 | 20·6, 21·5 | 20·6 | 20·2, 21·1 | 20·2 | 19·8, 20·7 | 20·9 |
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.