Effect of Contact Conditions of Torsional Wave Elastographic Probe on Human Cervix

Table 1

ANOVA results.

Speculum effect		N = 3
H=0 (no effect)	Outcome	A: 3 No-Speculum measurement sets	B: 3 Speculum measurement sets
p-value=0.262	(norm by A)	1.00 0.17	6.00 16.97
t-stat=-1.15		59.8 %	3.5 %
Gel		N women = 3
H=0 (no effect)	Outcome	A: 3 No-Gel measurement sets	B: 3 Gel measurement sets
p-value=0.709	(norm by A)	1.00 0.20	1.03 0.29
t-stat=-0.38		66.19 %	59.75 %
Force on cervix-intraoperator		N women = 1
H=0 (no effect)	Outcome	A: 2 Normal force measurement sets	B: 2 Soft force measurement sets
p-value=0.323	(norm by A)	1.00 0.14	0.75 0.57
t-stat=1.03		50.42 %	46.75 %
Force on cervix-interoperator		by 2 operators N women= 1
H=1 (effect)	Outcome	A: 1 Normal force measurement set	B: 1 Soft force measurement set
p-value=0.000002	(norm by A)	1.00 0.16	0.48 0.15
t-stat=7.24		55.86 %
Probe off-centering on cervix		by 2 operators N women= 2
H=1 (effect)	Outcome	A: 4 Centered measurement sets	B: 4 Off-centered >1cm measurement sets
p-value=0.00004	(norm by A)	1.00 0.13	0.66 0.31
t-stat=4.60		51.89 %	64.94 %
Time interval measurement variation		N women = 1
H=0 (no effect)	Outcome	A: 1 Initial measurement set	B: 1 Final measurement set (after 30 minutes)
p-value=0.107	(norm by A)	1.00 0.10	1.12 0.14
t-stat=-1.77		76.16 %	87.20 %