TABLE 2.
Relation of School Day (y/n) and Participant Demographic and Anthropometric Characteristics to MVPA Minutes per Day in Each Location (N = 549)
| MVPA in Each Location | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| All Locations | At Home | Near Home | At School | Near School | Other Locations | |||||||||||||
| B (95% CI), min/d | % Differencea | P | B (95% CI), min/d | % Differencea | P | B (95% CI), min/d | % Differencea | P | B (95% CI), min/d | % Differencea | P | B (95% CI), min/d | % Differencea | P | B (95% CI), min/d | % Differencea | P | |
| Weighted grand mean | 39.4 | — | — | 7.4 | — | — | 5.9 | — | — | 16.7 | — | — | 2.2 | — | — | 7.2 | — | — |
| School day (vs nonschool day) | 9.3 (7.9 to 10.8) | 26.8 | <.001 | −6.8 (−7.6 to −6.0) | −63.0 | <.001 | −1.4 (−2.1 to −0.7) | −21.2 | <.001 | 22.7 (21.8 to 23.6) | 424.3 | <.001 | 0.5 (0.1 to 0.9) | 25.6 | .015 | −5.6 (−6.6 to 4.6) | −56.0 | <.001 |
| Age, y | −0.7 (−1.8 to 0.3) | −1.8 | .163 | −0.7 (−1.2 to −0.2) | −9.0 | .007 | −0.3 (−0.8 to 0.3) | −5.0 | .326 | 0.5 (−0.5 to 0.6) | 3.0 | .863 | 0 (−0.3 to 0.2) | 0 | .772 | 0.2 (−0.3 to 0.8) | 2.8 | .365 |
| Girls (vs boys) | −15.0 (−18.1 to 12.0) | −32.0 | <.001 | −3.7 (−5.2 to −2.2) | −40.0 | <.001 | −2.6 (−4.2 to −1.0) | −36.1 | .001 | −5.5 (−7.0 to −3.9) | −28.3 | <.001 | −0.6 (−1.2 to 0.1) | −24.0 | .094 | −2.6 (−4.1 to −1.2) | −30.6 | .001 |
| White non-Hispanic (vs nonwhite or Hispanic) | −0.9 (−4.2 to 2.4) | −2.3 | .585 | 0.1 (−1.5 to 1.7) | 1.4 | .920 | −1.4 (−3.1 to 0.4) | −21.2 | .121 | 0.4 (−1.3 to 2.1) | 2.4 | .654 | −0.5 (−1.2 to 0.2) | −20.4 | .186 | 0.5 (−1.1 to 2.1) | 7.2 | .519 |
| Parent ≥college grad (vs parent <college grad) | 0.3 (−3.0 to 3.5) | 0.8 | .875 | 1.4 (−0.2 to 3.0) | 20.9 | .078 | −1.1 (−2.9 to 0.6) | −17.1 | .194 | 0.2 (−1.4 to 1.9) | 1.2 | .779 | 0.3 (−0.4 to 1.1) | 14.6 | .345 | −0.6 (−2.2 to 1.0) | −8.0 | .481 |
| BMI (percentile/10) | −0.7 (−1.3 to −0.2) | −1.8 | .011 | −0.1 (−0.3 to 0.2) | −1.3 | .629 | −0.3 (−0.6 to 0) | −5.0 | .065 | −0.3 (−0.6 to 0) | −1.8 | .085 | 0 (−0.1 to 0.1) | 0 | .848 | −0.1 (−0.4 to 0.1) | −1.4 | .325 |
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 minutes per day of 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.