Table 1. Subjective feelings when sleeping on different pressure distribution models.

	Hard		Soft		Comfortable		Difficult to fall asleep
	Yes	No	Yes	No	Yes	No	Yes	No
Moc	15	1					8	8
Moe			12	4			5	11
Mid	1	15	0	16	15	1	1	15
Mid′	0	16	2	14	14	2	3	13
	PMoc*Mid<0.001		PMoe*Mid<0.001				PMoc*Mid<0.01
	PMoc*Mid′<0.001		PMoe*Mid′<0.001