Table 2.

T-test confidence limits and P values comparing spinal segment slopes for pairs of pillows at 10 minutes

	Segment	CL	P
Polyester and regular foam	EOP-C2	0.01 to 0.17	0.023
	C2-C4	−0.006 to 0.16	0.07
	C4-C7	−0.13 to 0.03	0.34
	C7-T3	−0.13 to 0.07	0.54
Regular and contour foam	EOP-C2	−0.1 to 0.04	0.48
	C2-C4	−0.04 to 0.11	0.33
	C4-C7	−0.01 to 0.2	0.07
	C7-T3	−0.03 to 0.16	0.2
Contour foam and feather	EOP-C2	−0.15 to −0.01	0.02
	C2-C4	−0.27 to −0.11	< 0.0001
	C4-C7	−0.28 to −0.07	0.002
	C7-T3	−0.16 to −0.04	0.002
Feather and latex	EOP-C2	−0.01 to 0.13	0.09
	C2-C4	0.06 to 0.24	0.001
	C4-C7	−0.03 to 0.2	0.14
	C7-T3	−0.02 to 0.12	0.14
Polyester and contour foam	EOP-C2	−0.005 to 0.13	0.07
	C2-C4	0.04 to 0.19	0.004
	C4-C7	0.05 to 0.25	0.005
	C7-T3	−0.02 to 0.09	0.26
Polyester and feather	EOP-C2	−0.1 to 0.06	0.6
	C2-C4	−0.17 to 0.01	0.09
	C4-C7	−0.14 to 0.09	0.63
	C7-T3	−0.13 to −0.005	0.03
Polyester and latex	EOP-C2	−0.3 to 0.11	0.24
	C2-C4	−0.01 to 0.16	0.08
	C4-C7	−0.05 to 0.17	0.3
	C7-T3	−0.8 to 0.05	0.6
Regular foam and feather	EOP-C2	−0.19 to −0.03	0.007
	C2-C4	−0.24 to −0.07	0.0008
	C4-C7	−0.2 to 0.03	0.16
	C7-T3	−0.14 to 0.07	0.5
Regular foam and latex	EOP-C2	−0.12 to 0.02	0.2
	C2-C4	−0.09 to 0.08	0.96
	C4-C7	−0.1 to 0.12	0.91
	C7-T3	−0.09 to 0.11	0.78
Contour foam and latex	EOP-C2	−0.9 to 0.42	0.5
	C2-C4	−0.12 to 0.04	0.31
	C4-C7	−0.19 to 0.02	0.1
	C7-T3	−0.11 to 0.01	0.13

Note: Significant findings (P < 0.01) are bold.

Abbreviation: CL, confidence limit.