Table 5.

Study 1 – Multiple linear regression model predicting moderate-to-vigorous physical activity (minutes/day)

	Unstandardized beta	Standard Error	Standardized beta	P	95%-CI
Model 1
Intercept	43.95	0.77		< 0.001	42.44; 45.46
Outdoor play
Low (<  1 h day)	0 (Ref)
Medium (1–2 h/day)	9.81	1.14	0.20	< 0.001	7.56; 12.06
High (≥2 h/day)	14.70	1.22	0.27	< 0.001	12.32; 17.09
Model 2
Intercept	93.07	2.81		< 0.001	87.55; 98.59
Outdoor play
Low (<  1 h day)	0 (Ref.)
Medium (1–2 h/day)	0.85	1.09	0.02	0.434	−1.29; 2.99
High (≥2 h/day)	3.87	1.20	0.07	0.001	1.53; 6.22
Age (years)	−3.08	0.15	−0.43	< 0.001	−3.37; −2.79
Sex
Male	0 (Ref.)
Female	−10.85	0.88	−0.23	< 0.001	− 12.58; −9.11
BMI
Normal weight	0 (Ref.)
Underweight	−0.50	1.52	−0.01	0.744	−3.49; 2.49
Overweight	−2.96	1.31	−0.04	0.024	−5.53; −0.38
Obese	−5.31	2.30	−0.04	0.021	−9.82; −0.80
Socio-economic status
Low	0 (Ref.)
Middle	1.10	1.69	0.02	0.514	−2.22; 4.42
High	3.62	1.83	0.07	0.047	0.04; 7.20

Model 1: Unadjusted model; Model 2: Adjusted model with the socio-demographic predictors age, sex, BMI, and socio-economic status. Abbreviations: CI = confidence interval; BMI = body mass index