TABLE 1.
Baseline characteristics according to categories of caffeinated soft drink consumption in a biracial cohort of US girls aged 9–10 y1
| Categories of caffeinated soft drink consumption |
||||
| Characteristics | 0 servings/d (n = 1062) | >0 to <1 serving/d (n = 525) | ≥1 serving/d (n = 401) | P2 |
| Age at entry into study, y | 10.0 ± 0.6 | 10.0 ± 0.5 | 10.1 ± 0.5 | 0.20 |
| Race, % African American | 54.4 | 41.0 | 36.7 | <0.01 |
| Height, cm | 140.9 ± 7.5 | 140.4 ± 7.2 | 141.7 ± 7.5 | 0.17 |
| Fat from skinfolds, % | 20.8 ± 8.4 | 21.2 ± 8.0 | 22.2 ± 8.5 | <0.01 |
| BMI, kg/m2 | 18.5 ± 3.8 | 18.2 ± 3.6 | 18.9 ± 3.8 | 0.19 |
| Parent education ≥college, % | 38.0 | 38.3 | 37.4 | 0.22 |
| Television viewing, h/wk | 30.8 ± 17.9 | 30.6 ± 15.9 | 30.4 ± 15.8 | 0.69 |
| Activity score, METS3 | 32.0 ± 18.4 | 32.4 ± 20.0 | 32.8 ± 20.0 | 0.50 |
| Diet variables | ||||
| Energy, kcal | 1817.3 ± 551.9 | 1802.2 ± 462.0 | 1896.2 ± 524.5 | 0.04 |
| Saturated fat, % of energy | 15.1 ± 2.9 | 15.3 ± 2.7 | 14.5 ± 2.7 | <0.01 |
| Polyunsaturated fat, % of energy | 6.9 ± 2.3 | 7.0 ± 2.3 | 6.8 ± 2.2 | 0.20 |
| Fiber, g/1000 kcal | 6.6 ± 2.1 | 6.0 ± 1.8 | 6.0 ± 2.0 | <0.01 |
| Magnesium, mg/1000 kcal | 123.4 ± 27.7 | 114.8 ± 22.1 | 113.4 ± 26.1 | <0.01 |
| Vitamin C, mg/1000 kcal | 52.4 ± 36.2 | 48.9 ± 30.6 | 46.2 ± 30.0 | <0.01 |
| Caffeine, mg/1000 kcal | 3.6 ± 6.4 | 10.7 ± 8.3 | 20.3 ± 12.8 | <0.01 |
| Aspartame, mg/1000 kcal | 2.4 ± 10.4 | 4.6 ± 17.6 | 12.5 ± 31.2 | <0.01 |
| Sugar, g/1000 kcal | 61.5 ± 16.3 | 64.0 ± 15.8 | 70.0 ± 16.5 | <0.01 |
1
Values are means ± SDs unless otherwise indicated.
2
Derived from ANOVA or chi-square test.
3
METS, metabolic equivalents.