TABLE 4.
Relation of School Day (y/n) and Participant Demographic and Anthropometric Characteristics to Proportion of Location Time Spent in MVPA (N = 549)
| Proportion of Location Time Spent in MVPA | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| All Locations | At Home | Near Home | At School | Near School | Other Locations | |||||||||||||
| B (95% CI), Proportion | % Differencea | P | B (95% CI), Proportion | % Differencea | P | B (95% CI), Proportion | % Differencea | P | B (95% CI), Proportion | % Differencea | P | B (95% CI), Proportion | % Differencea | P | B (95% CI), Proportion | % Differencea | P | |
| Weighted grand mean | 4.8% | — | — | 5.3% | — | — | 9.5% | — | — | 4.8% | — | — | 9.7% | — | — | 7.1% | — | — |
| School day (vs nonschool day) | 0.7% (0.5 to 0.9) | 15.7 | <.001 | 1.2% (0.5 to 1.9) | 25.5 | .001 | 4.0% (3.0 to 4.9) | 53.3 | <.001 | −3.3% (−4.1 to −2.4) | −51.2 | <.001 | 6.1% (4.3 to 7.8) | 91.7 | <.001 | 0.3% (−0.6 to 1.3) | 4.3 | .479 |
| Age, y | −0.1% (−0.2 to 0) | −2.1 | .135 | 0.4% (−0.2 to 0.9) | 7.8 | .212 | 0.2% (−0.4 to 0.1) | 2.1 | .506 | 0.1% (−0.2 to 0.3) | 2.1 | .575 | 0.4% (−0.4 to 1.1) | 4.2 | .438 | 0.2% (−0.3 to 0.8) | 2.9 | .397 |
| Girls (vs boys) | −1.8% (−2.1 to −1.4) | −31.6 | <.001 | −0.6% (−2.2 to 1.0) | −10.7 | .434 | −2.7% (−4.3 to −1.0) | −24.9 | .001 | −2.1% (−2.8 to −1.5) | −35.9 | <.001 | −5.1% (−7.3 to −2.9) | −41.6 | <.001 | −2.1% (−3.8 to −0.5) | −25.8 | .011 |
| White non-Hispanic (vs nonwhite or Hispanic) | 0% (−0.4 to 0.4) | 0 | .957 | −0.2% (−1.9 to 1.5) | −3.7 | .797 | 0% (−1.7 to 1.8) | 0 | .988 | 0.1% (−0.6 to 0.8) | 2.1 | .835 | −1.0% (−3.4 to 1.5) | −9.8 | .436 | 0.9% (−0.9 to 2.6) | 13.5 | .344 |
| Parent ≥college grad (vs parent <college grad) | 0.1% (−0.3 to 0.4) | 2.1 | .749 | −0.6% (−2.3 to 1.1) | −10.7 | .478 | −0.6% (−2.4 to 1.1) | −6.1 | .490 | −0.2% (−0.9 to 0.5) | −4.1 | .664 | 1.3% (−1.1 to 3.7) | 14.4 | .297 | −0.1% (−1.9 to 1.7) | −1.4 | .896 |
| BMI (percentile/10) | −0.1% (−0.1 to 0) | −2.1 | .011 | 0.1% (−0.2 to 0.4) | 1.9 | .533 | −0.3% (−0.6 to 0) | −3.1 | .055 | −0.1% (−0.2 to 0) | −2.1 | .170 | −0.2% (−0.6 to 0.2) | −2.0 | .390 | −0.2% (−0.5 to 0.1) | −2.8 | .263 |
From mixed-effects linear multivariable regression models adjusted for neighborhood income and walkability and nesting of days within participants and participants within block groups. B, unstandardized regression coefficient, interpreted as percentage of location time spent in MVPA; CI, confidence interval.
a
Difference between the 2 demographic categories of interest (reference category is in parentheses) or for a 1-y increase in age or 10-percentile increase in BMI.