Different neighborhood walkability indexes for active commuting to school are necessary for urban and rural children and adolescents

Table 4 Performance of regression models between walkability index and ACS for urban and rural children, controlling for gender, age, and SES

No. variables	Urban children				Rural children
No. variables	Walkability index^a	MSE	RMSE	r-value	Walkability index^b	MSE	RMSE	r-value
2	[Positive streetscape characteristics + Distance to school]	8.25	2.87	0.51	[No. traffic lanes + Crossing quality]	8.83	2.97	0.64
3	[Residential density + Distance to school + Intersection density]	8.2	2.86	0.51	[No. traffic lanes + Crossing quality+ Distance to school]	8.76	2.96	0.64
4	[Crossing quality + Distance to school + No. crossings + Positive streetscape characteristics]	8.2	2.86	0.51	[Intersection density + Positive streetscape characteristics + Distance to school + Parking street buffer]	8.72	2.95	0.65
5	[Residential density + Distance to school + Intersection density + Positive streetscape characteristics + Crossing quality]	8.16	2.86	0.52	[No. four-way intersections + crossing quality + Distance to school + No. crossings + Traffic calming]	8.74	2.96	0.64
6	[Residential density + Distance to school + No. crossings + Intersection density + Crossing quality + Positive streetscape characteristics]	8.16	2.86	0.52	[No. four-way intersections + crossing quality + Distance to school + No. crossings + Positive streetscape characteristics + Parking street buffer]	8.77	2.96	0.64

Notes. Normalized values (range normalization) of the variables were used. MSE Mean square error, RMSE Root mean square error. ^aThe value of the variable Distance to school has been inverted according to the Beta values found in Table 2. ^bThe value of the variables No. traffic lanes, Distance to school, Intersection density, Positive streetscape characteristics, Parking street buffer, No. four-way intersections, No. crossings and Traffic calming have been inverted according to the Beta values found in Table 2

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