Date	Event	Description
7 March 2023	Amended	Data have been corrected for Analysis 1.9, 'third‐ and fourth‐degree anal sphincter tears'. In response to feedback received on this review, the data were investigated for the outcome 'third‐ and fourth‐ degree perineal tears'.  After investigation it was found that the data for this outcome had incorrectly included data for both anal sphincter tears and vaginal laceration or cervical tear as a composite outcome. This outcome has now been re‐labelled as 'third‐ and fourth‐ degree anal sphincter tears' and the data reporting on vaginal laceration or cervical tear have been removed.
7 March 2023	New citation required and conclusions have changed	The outcome 'third‐ and fourth‐ degree perineal tears' has been re‐labelled as 'third‐ and fourth‐ degree anal sphincter tears.'   The possible increase previously observed in 'third‐ and fourth‐ degree perineal tears' for women randomised to the induction group (RR 3.70, 95% CI 1.04 to 13.17) is now not apparent, with results being very uncertain for 'third‐ and fourth‐ degree anal sphincter tears' (RR 3.03, 95% CI 0.62 to 14.92).
4 August 2022	Amended	Correction to url in Editorial note regarding a potential error in the data for Analysis 1.9. See Published notes.
28 July 2022	Amended	Editorial note added regarding a potential error in the data for Analysis 1.9.  See Published notes.
23 May 2016	Amended	Edited the plain language summary to include links to visual summaries (infographics) for this review.
31 January 2016	New citation required and conclusions have changed	A large high‐quality trial has now been included (Boulvain 2015). Although no brachial plexus injuries occurred, the inclusion of other data from that trial means that the review now shows a reduction in birth fractures and shoulder dystocia and suggests that there is no overall increase in caesarean section.
31 January 2016	New search has been performed	Search updated. We have included one new trial and this updated review is now comprised of four studies (involving 1190 women).
14 January 2011	New search has been performed	Search updated. No new reports identified.
24 July 2009	New search has been performed	Search updated. No new reports identified.
11 February 2008	Amended	Converted to new review format.
30 September 2007	New search has been performed	Search updated. A previously identified ongoing study has been completed (LIBBY 1998) and we have included the results in this update. The review's conclusions have not changed.
31 July 2004	New search has been performed	New search undertaken, as a result of which we have identified two new ongoing studies. We have also added a Synopsis.