Usability of the SAFEWAY2SCHOOL system in children with cognitive disabilities

European Transport Research Review

An Open Access Journal

Table 10 Scores for the six usage statements across the groups

Usage	Mean scores		Mean difference	Z-value	p-value
Usage	Con	CWD	Mean difference	Z-value	p-value
I would use it often	4.48	4.29	.19	0.65	.519
I want to use it often	4.65	3.79	.86	2.80	.005*
It is easy to use	4.65	4.14	.51	1.89	.058
^¥ I need help to use it	2.13	2.29	−.16	−0.34	.732
^¥ I will struggle to remember the transmitter	2.61	3.07	−.46	−0.88	.377
^¥ I have to learn a lot before I can use it	1.65	3.14	−1.49	−3.32	.001*

^¥ indicates that in the responses to these statements lower scores are positive. Bonferroni corrected α-value = .008. * indicates significant difference between the two groups