Table 1.
Frequency of soft drink consumption* | Frequency of sweetened coffee/tea consumption* | Frequency of energy drink consumption* | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
n | % | Mean | sd | P value† | Mean | sd | P value† | Mean | sd | P value† | |
Total | 2·58 | 1·89 | 2·40 | 2·06 | 0·58 | 1·22 | |||||
School | <0·001 | <0·001 | <0·001 | ||||||||
School 1 | 158 | 15·2 | 2·97 | 1·88 | 3·13 | 1·99 | 0·78 | 1·32 | |||
School 2 | 522 | 50·1 | 2·93 | 1·84 | 2·87 | 2·06 | 0·79 | 1·38 | |||
School 3 | 303 | 29·1 | 1·94 | 1·80 | 1·40 | 1·67 | 0·15 | 0·64 | |||
School 4 | 59 | 5·6 | 1·78 | 1·65 | 1·41 | 1·83 | 0·34 | 1·12 | |||
School type | <0·001 | <0·001 | <0·001 | ||||||||
Private | 362 | 34·7 | 1·91 | 1·78 | 1·40 | 1·70 | 0·18 | 0·74 | |||
Public | 680 | 65·3 | 2·94 | 1·85 | 2·93 | 2·05 | 0·79 | 1·36 | |||
Gender | <0·001 | 0·31 | <0·001 | ||||||||
Female | 531 | 51·0 | 2·32 | 1·88 | 2·35 | 2·05 | 0·37 | 1·02 | |||
Male | 511 | 49·0 | 2·86 | 1·85 | 2·45 | 2·08 | 0·80 | 1·37 | |||
Grade | 0·001 | 0·04 | <0·001 | ||||||||
1 | 262 | 25·2 | 2·82 | 1·85 | 2·52 | 2·03 | 0·68 | 1·30 | |||
2 | 287 | 27·5 | 2·57 | 1·84 | 2·52 | 2·09 | 0·62 | 1·27 | |||
3 | 187 | 17·9 | 2·75 | 1·88 | 2·34 | 2·03 | 0·59 | 1·30 | |||
4 | 153 | 14·7 | 2·27 | 1·94 | 2·31 | 2·11 | 0·58 | 1·23 | |||
5 | 153 | 14·7 | 2·30 | 1·94 | 2·10 | 2·04 | 0·33 | 0·78 | |||
Weight status‡ | 0·21 | <0·001 | 0·01 | ||||||||
Healthy weight | 508 | 48·8 | 2·51 | 1·90 | 2·15 | 2·04 | 0·51 | 1·11 | |||
Underweight | 28 | 2·7 | 2·43 | 1·89 | 2·43 | 2·13 | 0·46 | 1·32 | |||
Overweight | 102 | 9·8 | 2·41 | 1·90 | 2·43 | 2·04 | 0·57 | 1·17 | |||
Obese | 29 | 2·8 | 2·76 | 1·64 | 3·07 | 2·02 | 0·93 | 1·41 | |||
Tobacco use | 0·39 | 0·15 | 0·002 | ||||||||
Non-current tobacco user | 1019 | 97·8 | 2·58 | 1·88 | 2·39 | 2·06 | 0·57 | 1·20 | |||
Current tobacco user | 23 | 2·2 | 2·87 | 2·12 | 2·87 | 2·07 | 1·13 | 1·84 | |||
Marijuana use | 0·24 | 0·14 | <0·001 | ||||||||
Non-current marijuana user | 1013 | 97·2 | 2·57 | 1·89 | 2·38 | 2·06 | 0·56 | 1·20 | |||
Current marijuana user | 29 | 2·8 | 2·93 | 1·89 | 2·83 | 1·98 | 1·41 | 1·64 | |||
Alcohol use | 0·02 | <0·001 | 0·03 | ||||||||
Non-current alcohol user | 794 | 76·2 | 2·65 | 1·87 | 2·49 | 2·06 | 0·55 | 1·17 | |||
Current alcohol user | 248 | 23·8 | 2·37 | 1·93 | 2·11 | 2·05 | 0·67 | 1·38 | |||
Sedentary behaviour | <0·001 | 0·08 | 0·001 | ||||||||
Not sedentary | 130 | 12·5 | 2·66 | 1·89 | 2·43 | 2·06 | 0·61 | 1·25 | |||
Sedentary | 912 | 87·5 | 2·06 | 1·76 | 2·18 | 2·08 | 0·38 | 0·98 | |||
Physical activity | <0·001 | 0·10 | 0·67 | ||||||||
Physically active | 424 | 40·7 | 2·42 | 1·90 | 2·33 | 2·07 | 0·54 | 1·20 | |||
Not physically active | 618 | 59·3 | 2·82 | 1·85 | 2·49 | 2·05 | 0·63 | 1·25 | |||
Bullying victimization | 0·89 | 0·03 | <0·001 | ||||||||
Non-victim | 850 | 81·6 | 2·58 | 1·88 | 2·35 | 2·06 | 0·54 | 1·16 | |||
Bullying victim | 192 | 18·4 | 2·57 | 1·90 | 2·61 | 2·05 | 0·76 | 1·45 | |||
Weight goal | 0·006 | 0·007 | 0·03 | ||||||||
Not trying to do anything about weight | 132 | 12·7 | 2·55 | 1·95 | 2·56 | 2·19 | 0·49 | 1·20 | |||
Gain weight | 174 | 16·7 | 2·92 | 1·88 | 2·51 | 2·07 | 0·73 | 1·35 | |||
Lose weight | 439 | 42·1 | 2·42 | 1·91 | 2·20 | 2·03 | 0·55 | 1·15 | |||
Stay the same weight | 297 | 28·5 | 2·64 | 1·81 | 2·54 | 2·03 | 0·58 | 1·25 | |||
Frequency of purchasing lunch from the school cafeteria§ | <0·001 | <0·001 | <0·001 | ||||||||
0 | 590 | 56·6 | 2·12 | 1·87 | 2·08 | 2·03 | 0·33 | 0·88 | |||
1 | 74 | 7·1 | 2·49 | 1·71 | 2·22 | 1·87 | 0·47 | 0·97 | |||
2 | 97 | 9·3 | 2·76 | 1·72 | 2·26 | 2·03 | 0·69 | 1·28 | |||
3 | 60 | 5·8 | 3·08 | 1·55 | 2·82 | 2·05 | 0·90 | 1·42 | |||
4 | 23 | 2·2 | 2·91 | 1·70 | 3·43 | 1·95 | 1·17 | 1·47 | |||
5 | 198 | 19·0 | 3·72 | 1·66 | 3·21 | 1·99 | 1·15 | 1·72 | |||
Frequency of purchasing lunch in a fast-food place/restaurant§ | <0·001 | <0·001 | <0·001 | ||||||||
0 | 736 | 70·6 | 2·35 | 1·92 | 2·34 | 2·08 | 0·50 | 1·14 | |||
1 | 146 | 14·0 | 2·64 | 1·59 | 2·02 | 1·91 | 0·62 | 1·22 | |||
2 | 75 | 7·2 | 3·41 | 1·68 | 2·88 | 2·07 | 0·48 | 1·08 | |||
3 | 28 | 2·7 | 3·57 | 1·73 | 2·93 | 1·98 | 0·82 | 1·22 | |||
4 | 14 | 1·4 | 3·29 | 1·38 | 2·86 | 1·70 | 1·36 | 1·69 | |||
5 | 43 | 4·1 | 4·09 | 1·57 | 3·26 | 2·05 | 1·56 | 1·89 | |||
Frequency of purchasing snacks from a school vending machine§ | <0·001 | <0·001 | <0·001 | ||||||||
0 | 844 | 81·0 | 2·45 | 1·89 | 2·25 | 2·06 | 0·50 | 1·12 | |||
1 | 57 | 5·5 | 2·25 | 1·55 | 2·46 | 1·79 | 0·60 | 1·10 | |||
2 | 36 | 3·5 | 3·03 | 1·56 | 2·50 | 1·95 | 0·64 | 1·29 | |||
3 | 28 | 2·7 | 3·25 | 1·60 | 3·71 | 1·56 | 1·07 | 1·68 | |||
4 | 8 | 0·7 | 3·75 | 1·91 | 3·63 | 2·07 | 1·63 | 1·77 | |||
5 | 69 | 6·6 | 3·78 | 1·79 | 3·36 | 2·05 | 1·25 | 1·79 | |||
Frequency of purchasing snacks from a vending machine, corner store, snack bar or canteen off school property§ | <0·001 | <0·001 | <0·001 | ||||||||
0 | 820 | 78·7 | 2·39 | 1·88 | 2·25 | 2·07 | 0·45 | 1·09 | |||
1 | 82 | 7·9 | 2·61 | 1·70 | 2·49 | 1·87 | 0·57 | 0·98 | |||
2 | 61 | 5·9 | 3·57 | 1·51 | 3·25 | 1·89 | 1·18 | 1·53 | |||
3 | 24 | 2·3 | 3·83 | 1·46 | 2·96 | 2·05 | 1·17 | 1·43 | |||
4 | 7 | 0·7 | 3·29 | 1·70 | 3·57 | 2·15 | 1·86 | 2·27 | |||
5 | 48 | 4·5 | 3·90 | 1·78 | 3·25 | 2·01 | 1·52 | 1·95 |
Number of weekdays (0–5 d) that participants reported consuming beverage.
P values derived from univariate Poisson regression analyses including each outcome and each explanatory variable.
Participants with missing weight status (n 375) were included in analyses, although not shown here.
Number of weekdays (0–5 d) that participants reported the food purchasing behaviour.