Table 1.

Summary item statistics of the analyses for the version with 14 items.

Items	Location	2 SE	Fit residuals	Chi-square (df=2)	P value
It was a disturbance	−1.12	0.36	−0.03	1.3	.52
It interrupted me in my daily activities	−1.00	0.35	3.98 a	9.5	.01
It was too time consuming	−0.94	0.35	−0.17	0.5	.79
The introduction of how to use it was sufficient	−0.45	0.37	1.14	3.2	.21
It was boring to use	−0.36	0.30	0.61	1.4	.50
It was easy to use	−0.29	0.36	−0.83	2.2	.33
It was good to use	−0.01	0.43	−1.16	4.6	.10
The time spent using it has been acceptable	0.12	0.40	−0.70	0.8	.68
I can recommend it to others	0.40	0.36	−0.87	2.7	.26
It has been difficult to remember to use it	0.48	0.27	5.23	9.6	.01
It has motivated me to change my lifestyle habits	0.72	0.38	−1.91	5.8	.06
It has helped me to understand the benefits of improving my lifestyle habits	0.74	0.39	−1.99	5.3	.07
It has helped me to understand how I need to change my lifestyle habits	0.78	0.38	−2.20	4.1	.13
It has helped me set personal goals for my lifestyle habits in a way that I could not have done on my own	0.94	0.37	−1.55	3.1	.21

^aFit residuals in italic indicate misfit +2.5.