Perianal ultrasound (PAUS): visualization of sphincter muscles and comparison with digital-rectal examination (DRE) in females

Table 3 Comparison of sphincter thickness at 6 and 12 o’clock and comparison of vertical and horizontal diameter in PAUS

Wilcoxon		Asympt. Sign.	6 < 12 or hor. < vert (%)	6 > 12 or hor. > vert (%)	6 = 12 or hor. = vert (%)
6–12 o’clock	rEAS	0.00	62.86	32.86	4.29
6–12 o’clock	rIAS	0.00	68.57	22.86	8.57
Horizontal–vertical	r diameter	0.20	42.86	57.14	0.00
6–12 o’clock	cEAS	0.06	52.86	40.00	7.14
6–12 o’clock	cIAS	0.00	68.57	27.14	4.29
Horizontal–vertical	c diameter	0.00	27.14	70.00	2.86

Wilcoxon-test. Separated evaluation of rest and contraction. EAS and IAS measurements compared between 6 and 12 o’clock and diameter compared between horizontal and vertical measurement. 6 < 12: percentage of a smaller value at 6 o’clock than value at 12 o’clock in percentage. 6 > 12: percentage of a greater value at 6 o’clock than value at 12 o’clock in percentage. 6 = 12: percentage of similar values at 6 o’clock and at 12 o’clock. Similar legend for diameter, hor.: horizontal, vert.: vertical, r: at rest, c: during contraction

ISSN: 1472-6874