| | βa | SE | p-valueb | DF |
|---|
Location
| | | <0.0001 | 5 |
Home | Ref | - | - | - |
School | 0.42 | 0.02 | <0.0001 | - |
Street/Sidewalk | 1.47 | 0.02 | <0.0001 | - |
Playground | 1.72 | 0.04 | <0.0001 | - |
Park | 1.13 | 0.04 | <0.0001 | - |
Other | 0.80 | 0.02 | <0.0001 | - |
Weather | - | - | 0.6 | 3 |
Location * Weather | - | - | <0.0001 | 15 |
Temperature | 0.007 | 0.002 | 0.0002 | 1 |
Gender | | | <0.0001 | 1 |
Female | Ref | | | - |
Male | 0.34 | 0.05 | <0.0001 | - |
- Ref, reference group; SE, standard error; DF, degree of freedom. Model includes 564,448 minutes of combined location-activity data among 80 subjects, and is adjusted for subject, age, sex, weight category, date, town, temperature, weather, and location-weather interactions, as well as time sequences (polynomial time terms remained significant up to time9, p < 0.0001) including valid hours per day of combined data to account for potential temporal effects of physical activity. The model AIC = 2,590,976.
- aReported β estimates for location variables are the log of activity counts (activity counts = ß × 100); β estimates for covariates are partial regression coefficients.
- bLongitudinal mixed effects.
- Location*Weather indicates interaction term for Location and Weather.
