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. Author manuscript; available in PMC: 2023 Apr 1.
Published in final edited form as: J Womens Health Phys Therap. 2022 Apr-Jun;46(2):100–108. doi: 10.1097/jwh.0000000000000224

TABLE 2.

Reliability of Dynamic Transperineal Ultrasound Measurements from Saved Videos

Transperineal Ultrasound Measure Interrater ICC Test-Retest ICC
ARA at rest / baseline 0.671 N/A
ARA from rest to contraction 0.466 N/A
ARA from rest to bearing down 0.534 N/A
LPA at rest / baseline 0.805 0.748
LPA from rest to contraction 0.795 0.725
LPA from rest to bearing down 0.831 0.563
PR length at rest / baseline 0.804 0.831
PR length from rest to contraction 0.932 0.803
PR length from rest to bearing down 0.692 0.831

ARA, Anorectal angle; LPA, Levator Plate Angle; PR, Puborectalis; Interrater ICC, two-way random effects absolute agreement; Test-Retest ICC, two-way mixed effects absolute agreement measured between two participant testing sessions; N/A, not applicable as ARA measures were not made at the second testing session.