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Table 4 Interactions between indices in relation to adolescents’ location-specific and overall physical activity and sedentary timexy

From: Location-specific psychosocial and environmental correlates of physical activity and sedentary time in young adolescents: preliminary evidence for location-specific approaches from a cross-sectional observational study

  β (SE)z
MVPA Sedentary time
School Home Other Overall School Home Other Overall
Interactions
 General physical activity psychosocial index
X non-school physical activity psychosocial index
NA − 0.02 (0.04) 0.01 (0.04) 0.00 (0.04) NA 0.01 (0.01) −0.02 (0.02) − 0.02 (0.03)
 General physical activity psychosocial index
 X school physical activity environment index
0.01 (0.04) NA NA −0.03 (0.04) 0.03 (0.03) NA NA a0.11** (0.04)
 General physical activity psychosocial index
X home physical activity environment index
NA −0.05 (0.04) NA b-0.07* (0.04) NA 0.02 (0.01) NA 0.03 (0.04)
 Non-school physical activity psychosocial index
X school physical activity environment index
−0.06 (0.04) NA NA c-0.07* (0.04) d0.04* (0.03) NA NA e0.10** (0.04)
 Non-school sedentary psychosocial index
X non-school sedentary environment index
NA −0.01 (0.03) 0.01 (0.04) 0.01 (0.04) NA 0.01 (0.01) 0.01 (0.01) 0.04 (0.03)
  1. aInteraction A
  2. bInteraction B
  3. cInteraction C
  4. dInteraction D
  5. eInteraction E
  6. xAll models were adjusted for participant age, sex, race/ethnicity, parent education, study design factors, number of days of accelerometer wear, number of school days, and accelerometer wear time in each location;
  7. yEmpty cells reflect models that were not investigated due to the activity location (e.g., school MVPA) being a mismatch with the location reflected in one or both of the location-specific indices comprising the interaction (e.g., non-school physical activity psychosocial index);
  8. z Values are standardized regression coefficients (β) and standard errors (SE) representing the interaction effect, with both the independent and dependent variables standardized to have a mean of zero and standard deviation of 1; Benchmarks for interpreting the magnitude of the interaction coefficients were small (β = .10), small-to-moderate (β = .20), and moderate (β = .30); Refer to Fig. 2 for interpretation of the interaction effects
  9. NA = Interaction not explored because location of one of the indices did not match location of the activity variable;
  10. *P < 0.1;
  11. **P < 0.01