Active commuting to school: How far is too far?

Table 6 Logistic regression model

Variables Included	B (S.E)	Odds Ratio	95% C.I.	p
Constant	1.86 (1.21)	6.43
Miles	-1.23 (.05)	.29	(.26, .32)	<0.001
Gender
Male	.50 (.10)	1.66	(1.36, 2.01)	<0.001
Population density ^a
>500,000	.76 (.21)	2.13	(1.41, 3.23)	<0.001
<500,000	.69 (.15)	2.00	(1.49, 2.69)	<0.001
<50,000	.54 (.13)	1.71	(1.32, 2.23)	<0.001

Note. Adjusted for socio-economic status and clustering at school level. R²= 0.49 (Cox & Snell), 0.67 (Nagelkerke). 85.7% correctly predicted.
^a reference category is village, <5,000 inhabitants

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