Table 1.

Cross-sectional regression models for MVPA at average ages 12, 14 and 16

	Age 12 (n=5735)			Age 14 (n=4078)			Age 16 (n=2198)
	Diff* (min)	95 % CI	P value	Diff* (min)	95 % CI	P value	Diff* (min)	95 % CI	P value
All†
Asthma	−1.47	(−3.19 to 0.25)	0.094	−0.05	(−2.05 to 1.95)	0.960	−2.62	(−5.16 to 0.09)	0.043
Eczema	−1.85	(−3.68 to 0.01)	0.049	−0.62	(−2.69 to 1.44)	0.554	0.74	(−1.75 to 3.24)	0.559
Overweight	−7.54	(−9.59 to 5.48)	<0.0005	−3.12	(−5.53 to 0.72)	0.011	−2.27	(−5.55 to 1.01)	0.175
Obese	−8.94	(−10.92 to 6.96)	<0.0005	−7.45	(−9.87 to 5.04)	<0.0005	−5.29	(−8.50 to 2.07)	0.001
Boys†
Asthma	−2.03	(−4.76 to 0.70)	0.144	0.47	(−2.71 to 3.65)	0.773	−3.22	(−7.42 to 0.98)	0.133
Eczema	−3.52	(−6.70 to 0.34)	0.030	0.05	(−3.51 to 3.61)	0.977	2.28	(−2.16 to 6.71)	0.314
Overweight	−11.39	(−14.83 to 7.95)	<0.0005	−4.47	(−8.54 to 0.40)	0.031	−5.22	(−10.95 to 0.50)	0.074
Obese	−12.52	(−15.77 to 9.26)	<0.0005	−10.24	(−14.13 to 6.35)	<0.0005	−9.42	(−14.99 to 3.85)	0.001
Girls†
Asthma	−1.01	(−3.09 to 1.06)	0.339	−0.71	(−3.16 to 1.75)	0.573	−2.48	(−5.52 to 0.56)	0.110
Eczema	−0.49	(−2.52 to 1.55)	0.639	−1.17	(−3.75 to 1.41)	0.372	−0.34	(−3.16 to 2.49)	0.816
Overweight	−4.07	(−6.44 to 1.70)	0.001	−1.95	(−4.79 to 0.88)	0.177	0.19	(−3.59 to 3.96)	0.923
Obese	−5.39	(−7.70 to 3.07)	<0.0005	−4.52	(−7.49 to 1.55)	0.003	−1.88	(−5.59 to 1.84)	0.321

*Difference in minutes of MVPA between a child with and without the condition, with all other variables the same.

†Models include all conditions, and are adjusted for child age, sex, mother’s education and household social class as confounders.

MVPA, moderate to vigorous intensity physical activity.