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Table 2 Categorization of the type of lesion into two groups

From: Obstetric anal sphincter injuries (OASIS): using transperineal ultrasound (TPUS) for detecting, visualizing and monitoring the healing process

Type of lesion

n|%

New category

n|%

Superficial

1|3

  

Partial

5|16

Moderate

6|19

Complete

24|77

  

EAS and IAS involvement

1|3

Severe

25|81