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

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

	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)

^aInteraction A
^bInteraction B
^cInteraction C
^dInteraction D
^eInteraction E
^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;
^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);
^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
NA = Interaction not explored because location of one of the indices did not match location of the activity variable;
*P < 0.1;
**P < 0.01

ISSN: 1479-5868