Table 3.

Ordered logistic regression models associating BMI-z quartile (dependent variable) and average 24-h sleep duration (Model 1) and nocturnal time-in-bed (Model 2)

Model 1						Model 2
			OR	95% CI	p-value				OR	95% CI	p-value
Ave 24-h sleep duration			0.42	0.23, 0.78	0.006	Ave nocturnal time-in-bed			0.45	0.26, 0.79	0.005
Covariates	Sex: Boy v girl		0.61	0.36, 1.03	0.066	Covariates	Sex: Boy v girl		0.57	0.33, 0.97	0.037
	Age		0.78	0.51, 1.20	0.261		Age		0.72	0.46, 1.13	0.153
	Group:	UL v UH	2.91	1.15, 7.40	0.025		Group:	UL v UH	2.48	0.96, 6.38	0.060
		RL v UH	1.14	0.48, 2.69	0.773			RL v UH	1.15	0.49 2.73	0.747
	Sedentary Behaviour		0.99	0.98, 1.00	0.009		Sedentary Behaviour		0.99	0.98, 1.00	0.018
	LMVPA		0.99	0.98, 1.00	0.128		LMVPA		1.00	0.99, 1.00	0.254
Model: n = 198, LR chi2 = 31.14, p < 0.001						Model: n = 198, LR chi2=31.62, p < 0.001

OR Odds ratio, CI Confidence interval, UL Urban low-income group, UH Urban high-income group, RL Rural low-income group, LMVPA Low- to vigorous-intensity physical activity