Studies with large populations, obtained from complete
and reliable hospital records, can facilitate the analysis of factors
associated with obstetric trauma. Comparing data from
different hospitals or populations can provide information regarding
the clinical importance of various factors, particularly
in terms of explaining the occurrence of severe perineal lacerations
[9, 10]. To date, these analyses are still conflicting,
especially regarding the role of restrictive episiotomy in
preventing severe laceration [11].