Table 5.

Results of SFA analysis

Natural logarithm of variables	Coefficient correlation	Standard error	CI (0.95)
Freeway/highway	- 0.04**	0.01	−0.07	−0.02
One-way main roads	0.03*	0.01	0.01	0.05
Two-way main roads	Due to correlation with One-way main road it has been excluded.
By roads	0.03*	0.01	0.01	0.05
Ratio of main road to total roads	0.03	0.01	−0.01	0.06
Young population	0.01	0.02	−0.04	0.04
Traffic count	0.19**	0.02	0.16	0.23
Literacy rate	−0.79*	0.37	−1.52	−0.05
Number of households owning motorcycle	0.08**	0.02	0.05	0.12
Proportion of household owning car	0.13	0.10	−0.06	0.33
Constant coefficient	1.93	1.39	−0.80	4.66
Mu	−2.07	145.55	−287.35	283.21
Ln sig2	−3.01	3.04	−8.98	2.96
Ilgtgamma	−2.65	46.09	−92.99	87.70
Sigma2	0.05	0.15	0.01	19.25
Gamma	0.06	2.84	4.10e – 41	1
Sigma υ 2	0.01	0.15	−0.29	0.30
Sigma ν 2	0.04	0.01	0.04	0.05

^* P < 0.05, ^** P < 0.01, ^*** P < 0.001