Table 2.
General characteristics of the participants by energy drinks consumption
| Variables | Categories | Energy drink consumption | P-value | |||
|---|---|---|---|---|---|---|
| No | Yes | |||||
| n | % | n | % | |||
| Sleep duration | Less than 5 h | 4736 | 58·0 | 3387 | 42·0 | <0·0001 |
| 5–6 h | 7256 | 66·8 | 3558 | 33·2 | ||
| 6–7 h | 8449 | 70·6 | 3469 | 29·4 | ||
| 7–8 h | 7853 | 75·1 | 2601 | 24·9 | ||
| 8 h or more | 7001 | 77·5 | 2135 | 22·5 | ||
| Sleep satisfaction | Sufficient | 8163 | 74·9 | 2750 | 25·1 | <0·0001 |
| Just enough | 11 749 | 71·1 | 4763 | 28·9 | ||
| Not enough | 15 383 | 66·2 | 7637 | 33·8 | ||
| Sex | Boys | 17 768 | 67·9 | 8246 | 32·1 | <0·0001 |
| Girls | 17 527 | 71·4 | 6904 | 28·6 | ||
| School year | Middle school (14–16 years old) | 18 830 | 73·4 | 6855 | 26·6 | <0·0001 |
| High school (17–19 years old) | 16 465 | 66·2 | 8295 | 33·8 | ||
| Subjective academic performance | Medium and above | 24 715 | 70·5 | 10 127 | 29·5 | <0·0001 |
| Mid-low and lower | 10 580 | 67·7 | 5023 | 32·3 | ||
| Subjective economic status | High | 13 727 | 69·1 | 6063 | 30·9 | 0·0013 |
| Middle | 17 225 | 70·4 | 7112 | 29·6 | ||
| Low | 4343 | 68·2 | 1975 | 31·8 | ||
| Subjective health status | Good | 25 390 | 70·7 | 10 362 | 29·3 | <0·0001 |
| Normal | 7633 | 69·6 | 3579 | 30·4 | ||
| Bad | 2272 | 65·0 | 1209 | 35·0 | ||
| Perceived stress | Less stressed | 7351 | 75·1 | 2418 | 24·9 | <0·0001 |
| More stressed | 27 944 | 68·3 | 12 732 | 31·7 | ||
| BMI (kg/m2) | Normal weight | 25 597 | 70·1 | 10 806 | 29·9 | <0·0001 |
| Underweight | 2529 | 71·6 | 989 | 28·4 | ||
| Overweight and obesity | 7169 | 67·3 | 3355 | 32·7 | ||
| Asthma history | No | 32 991 | 69·8 | 14 021 | 30·2 | 0·0008 |
| Yes | 2304 | 66·8 | 1129 | 33·2 | ||
| Physical activity | 0 | 12 719 | 71·8 | 4857 | 28·2 | <0·0001 |
| 1–3 | 14 995 | 68·6 | 6827 | 31·4 | ||
| 4–5 | 4638 | 69·1 | 2009 | 30·9 | ||
| 6–7 | 2943 | 66·6 | 1457 | 33·4 | ||
Values are presented as numbers (%).