Table 1.

The Kano model attribute classification criteria

Functional question (How do you feel when the nurse provides you with adequate sleep time and quality?)	Dysfunctional question (How do you feel when the nurse does not provide you with adequate sleep time and quality?)
	I like it that way	It must be that way	I am neutral	I can live with it that way	I dislike it that way
I like it that way	Q	A	A	A	O
It must be that way	R	I	I	I	M
I am neutral	R	I	I	I	M
I can live with it that way	R	I	I	I	M
I dislike it that way	R	R	R	R	Q