A1 Refereed original research article in a scientific journal
The Association of Episiotomy with Obstetric Anal Sphincter Injury-A Population Based Matched Cohort Study
Authors: Sari Räisänen, Tuomas Selander, Rufus Cartwright, Mika Gissler, Michael R. Kramer, Katariina Laine, Seppo Heinonen
Publisher: PUBLIC LIBRARY SCIENCE
Publication year: 2014
Journal: PLoS ONE
Journal name in source: PLOS ONE
Journal acronym: PLOS ONE
Article number: ARTN e107053
Volume: 9
Issue: 9
Number of pages: 7
ISSN: 1932-6203
DOI: https://doi.org/10.1371/journal.pone.0107053
Conclusions: A matched pair analysis showed a substantial reduction in the aORs of OASIS with episiotomy, due to confounding by indication. This indicates that results of observational studies evaluating an association between episiotomy and OASIS should be interpreted with caution.