Table 1 Descriptive statistics of the background variables
From: Sleep and energy drink consumption among Norwegian adolescents – a cross-sectional study
Total n = 1353 | < 8 h sleep n = 724 | ≥8 h sleep n = 629 | |
|---|---|---|---|
n (%) | n (%) | n (%) | |
Sex | |||
Male | 627 (46.3) | 337 (46.5) | 290 (46.1) |
Female | 726 (53.7) | 387 (53.5) | 339 (53.9) |
Perceived family economy | |||
Poor family economy | 44 (3.2) | 25 (3.5) | 19 (3.0) |
Medium family economy | 400 (29.6) | 241 (33.3) | 159 (25.3) |
Good family economy | 905 (66.9) | 454 (62.6) | 451 (71.7) |
Missing | 4 (0.3) | 4 (0.6) | 0 |
Size of community | |||
< 20,000 inhabitants | 974 (72.0) | 530 (73.2) | 444 (70.6) |
≥ 20,000 inhabitants | 378 (27.9) | 193 (26.7) | 185 (29.4) |
Missing | 1 (0.1) | 1 (0.1) | 0 |
Energy drink frequency | |||
Never | 408 (30.2) | 176 (24.3) | 232 (36.9) |
Seldom | 433 (32.0) | 222 (30.7) | 211 (33.6) |
1–3 times a month | 257 (19.0) | 141 (19.5) | 116 (18.4) |
Once a week | 112 (8.3) | 77 (10.6) | 35 (5.6) |
2–3 times a week | 97 (7.2) | 72 (9.9) | 25 (4.0) |
≥ 4 times a week | 46 (3.4) | 36 (5.0) | 10 (1.6) |
Physical activity frequency | |||
Never | 100 (7.4) | 64 (8.8) | 36 (5.7) |
Once a week | 201 (14.9) | 108 (14.9) | 93 (14.8) |
2–3 times a week | 447 (33.0) | 239 (33.0) | 208 (33.1) |
4–6 times a week | 456 (33.7) | 248 (34.2) | 208 (33.1) |
Every day | 147 (10.9) | 63 (8.7) | 84 (13.3) |
Missing | 2 (0.1) | 3 (0.4) | 0 |
Leisure screen time weekdays | |||
≤ 2 h | 408 (30.2) | 179 (24.7) | 229 (36.4) |
3–5 h | 634 (46.9) | 346 (47.8) | 288 (5.8) |
> 5 h | 303 (22.4) | 195 (26.9) | 108 (17.2) |
Missing | 8 (0.6) | 4 (0.6) | 4 (0.6) |