Table 1.
General characteristics of participants across the tertiles of sleep duration
| T1 (< 6 h) | T2 (6–7 h) | T3 (> 7 h) | |||||
|---|---|---|---|---|---|---|---|
| Mean | sd | Mean | sd | Mean | sd | P* | |
| Age (year) | 10·9 | 44·7 | 10·8 | 44·0 | 10·4 | 44·5 | 0·71 |
| BMI (kg/m2) | 4·69 | 27·9 | 4·86 | 27·7 | 4·52 | 27·7 | 0·86 |
| HEI-2015 score | 52·3 | 8·67 | 53·4 | 8·28 | 52·0 | 8·41 | 0·17 |
| Adhering to HEI-2015 | 0·81 | ||||||
| 25–49 | |||||||
| n | 91 | 75 | 79 | ||||
| % | 37·1 | 30·6 | 32·2 | ||||
| 50–56 | |||||||
| n | 76 | 76 | 68 | ||||
| % | 34·5 | 34·5 | 30·9 | ||||
| 57–77 | |||||||
| n | 91 | 91 | 75 | ||||
| % | 35·4 | 35·4 | 29·2 | ||||
| Irregularity score | |||||||
| Mean | 24·7 | 23·1 | 20·8 | 0·10 | |||
| sd | 21·6 | 18·5 | 18·0 | ||||
| Sex (male) (%) | 33·1 | 33·3 | 25·6 | 0·11 | |||
| Waist circumference (cm) | |||||||
| Mean | 11·4 | 13·4 | 12·5 | 0·04 | |||
| sd | 93·4 | 91·1 | 90·9 | ||||
| % | % | % | |||||
| Marital status (single) (%) | 77·9 | 85·1 | 81·1 | 0·03 | |||
| Education (educated) (%) | 35·7 | 34·9 | 31·7 | 0·05 | |||
| Hypertension (yes) (%) | 14·4 | 12 | 21·6 | 0·01 | |||
| Diabetes (yes) (%) | 8·7 | 7·3 | 9·7 | 0·63 | |||
| Physical activity (inactive) (%) | 84 | 69·1 | 44·9 | 0·001> | |||
| Smoking (smoker) (%) | 6·1 | 6·4 | 3·1 | 0·50 | |||
Data are presented as mean (sd) or percentage.
HEI, Healthy Eating Index.
*Obtained from ANOVA or χ 2, where appropriate.