Table 2.

Bivariate analysis of mean days of 60-min physical activity at registration in the cohort (n = 37,375)

		Mean days (95% Confidence Interval)	Contrast	Significance
All		4.46 (4.44, 4.48)	–	–
Sex	Male	4.65 (4.62, 4.67)	Ref	Ref
	Female	4.26 (4.23, 4.28)	−0.39	< 0.0001
Age	4–8 years	4.50 (4.48, 4.53)	Ref	Ref
	9–11 years	4.50 (4.47, 4.54)	0.00	0.875
	12–14 years	4.39 (4.35, 4.43)	−0.12	< 0.0001
	15–18 years	4.29 (4.23, 4.35)	−0.22	< 0.0001
Aboriginal/Torres Strat Islander	No	4.46 (4.43, 4.47)	Ref	Ref
	Yes	4.55 (4.45, 4.64)	0.09	0.061
Language spoken at home	English	4.51 (4.49, 4.53)	Ref	Ref
	Other	3.85 (3.78, 3.92)	−0.66	< 0.0001
Disability	No disability	4.48 (4.46, 4.50)	Ref	Ref
	Disability	3.97 (3.86, 4.09)	−0.50	< 0.0001
Socio-economic status	1st Quartile Most disadvantaged	4.24 (4.19, 4.30)	Ref	Ref
	2nd Quartile	4.53 (4.49, 4.57)	0.29	< 0.0001
	3rd Quartile	4.40 (4.37, 4.44)	0.16	< 0.0001
	4th Quartile Least Disadvantaged	4.52 (4.49, 4.56)	0.28	< 0.0001
Geographic location	Major City	4.40 (4.37, 4.42)	Ref	Ref
	Regional	4.61 (4.57, 4.65)	0.21	< 0.0001
	Outer regional and remote	4.69 (4.60, 4.77)	0.29	< 0.0001
Body Mass index	Thin	4.48 (4.57, 4.71)	−0.01	0.799
	Healthy weight	4.65 (4.62, 4.68)	Ref	Ref
	Overweight	4.40 (4.34, 4.46)	−0.25	< 0.0001
	Obese	4.13 (4.03, 4.22)	−0.52	< 0.0001

* Some participants reported being unsure of their child’s physical activity at registration