TABLE 2.

Descriptive statistics for digital palpation andTA ultrasound measurements.

Variables	Mean (SD) Median (range)	Lowest value	Highest value	95% CI for mean/median
TA ultrasound measurement in trial 1 (mm)∗	4.9 (6.9)	−6.2	23.8	1.6–8.3
TA ultrasound measurement in trial 2 (mm)∗	7.4 (6.5)	0.1	23.8	4.3–10.6
Digital palpation testing (modified Oxford scale)∗∗	3(3)	2	5	3–4

Trial 1 = Ultrasound measurement simultaneous with digital palpation testing in same contraction

Trial 2 = Ultrasound measurement following digital palpation testing in separate contraction

^∗TA = Transabdominal, = Data are mean (SD),

^∗∗= Data are median (range), 95% CI = 95% confidence interval