Community Micro-Ambulance Design Based on QFD and TRIZ Theories

Table 13

The mean and standard deviation of the questionnaire data.

Principle layer	Element layer	Mean	Standard deviation
Transportation	C1	65.6	16.5
	C2	72.6	19.9
	C3	86.0	10.2
	C4	80.6	14.3
	C5	71.0	21.4
Medical aid	C6	83.6	10.9
	C7	78.4	18.3
	C8	68.2	22.8
	C9	61.0	24.3
	C10	67.0	20.6
Body appearance	C11	66.4	22.9
	C12	65.2	24.3
	C13	70.4	19.3
	C14	65.2	20.6