Table 2.
Associations of adolescent physical activity and dietary behavior between locations
| β [95% CI] | |||
|---|---|---|---|
| Schoola-homeb | Schoola-otherb | Homeb-otherb | |
| Physical activity variables | |||
| MVPA, minutes/day | 0.17* [0.10, 0.27] | 0.16* [0.08, 0.25] | 0.06 [−0.03, 0.16] |
| Sedentary time, minutes/day | 0.11* [0.06, 0.15] | 0.16* [0.11, 0.22] | 0.21* [0.09, .034] |
| Time in 30+ min sedentary bouts, minutes/day | 0.10 [0.01, 0.20] | 0.13* [0.03, 0.23] | 0.10 [< 0.001, 0.20] |
| Mean bout duration, minutes/day | 0.06 [−0.003, 0.12] | 0.20* [0.12, 0.28] | 0.17* [0.05, 0.30] |
| Period, minutes/day | 0.30* [0.18, 0.34] | 0.13 [0.03, 0.22] | 0.26* [0.15, 0.36] |
| Alpha | 0.02 [−0.07, 0.12] | 0.15* [0.06,0 .23] | 0.08 [−0.02, 0.18] |
| Dietary variables | |||
| Added sugar, grams | 0.17* [0.04, 0.29] | 0.05 [−0.01, 0.11] | 0.03 [−0.003, 0.06] |
| Sodium, mg | 0.18* [0.06, 0.30] | 0.04 [−0.02, 0.09] | 0.05* [0.02, 0.08] |
| Fruits and vegetables, servings | 0.31* [0.12, 0.42] | 0.02 [−0.05, 0.08] | 0.02 [−0.02, 0.06] |
| High calorie beverages, number | 0.22* [0.12, 0.34] | −0.01 [− 0.06, 0.04] | 0.08* [0.04, 0.11] |
| Sweet and savory snacks, number | 0.10 [0.01, 0.20] | 0.03 [−0.01, 0.07] | 0.03 [−0.004, 0.05] |
| Whole grains, servings | 0.23* [0.12, 0.33] | 0.07* [0.04, 0.09] | 0.03 [−0.001, 0.03] |
| Fiber, grams | 0.52* [0.38, 0.65] | 0.09* [0.05, 0.13] | 0.04* [0.03, 0.07] |
| Fat calories, kcal | 0.11 [−0.01, 0.23] | 0.04 [−0.02, 0.09] | 0.04 [0.001, 0.08] |
| Saturated fat calories, kcal | 0.23* [0.10, 0.36] | −0.01 [− 0.07, 0.04] | 0.04 [0.003, 0.07] |
β = standardized regression coefficients with both the independent and dependent variables standardized to have a mean of zero and standard deviation of 1
Second variable in column (Variable1-Variable2) represents the dependent variable
All models adjusted for participant age, sex, race/ethnicity, parent education, and study design factors. Physical activity variables were additionally adjusted for time spent at each location, accelerometer model, number of days of accelerometer wear, number of school days, and accelerometer wear time. Dietary variables were additionally adjusted for participant height, weight, number of days of dietary recall, and energy intake at each location
aOn school days only
bCalculated for a weighted week (weekdays*5 + weekend days*2)/7
*p < .01