Trajectories of Objectively Measured Physical Activity among Secondary Students in Canada in the Context of a Province-Wide Physical Education Policy: A Longitudinal Analysis

Table 3

Unadjusted linear growth curve modeling examining estimated effect on students’ baseline physical activity and physical activity trajectories.

	Estimated effect on baseline physical activity; (minutes per day)		Estimated effect on physical activity trajectories; (minutes per day per semester)
	Fixed effect	𝑃 value	Fixed Effect	𝑃 value
Student Characteristics
Gender
Female	−12.5 (2.04)	<0.0001	0.596 (0.598)	0.3194
Male	Referent		Referent
Baseline physical activity
Low	−47.7 (1.50)	<0.0001	7.11 (0.707)	<0.0001
Moderate	−25.8 (1.51)	<0.0001	4.20 (0.719)	<0.0001
High	Referent		Referent
BMI status
Overweight or obese	1.92 (3.21)	0.5512	−0.785 (0.901)	0.3894
Healthy weight	Referent		Referent
Missing	1.88 (2.35)	0.4252	−0.0527 (0.657)	0.9362
School neighbourhood characteristics
School location
Rural	−10.6 (2.25)	<0.0001	1.49 (0.658)	0.0234
Urban	Referent		Referent
Socioeconomic status
Low	−9.09 (2.27)	<0.0001	1.75 (0.664)	0.0086
High	Referent		Referent

Fixed effects of intercepts for each model are not shown.
Standard errors are shown in parentheses.
Referent categories are identified as “referent.”